Subject: Re: [Healeys] Valve clearances

From: Michael Salter <[email-masked]>
Date: Sun, 13 Jan 2019 18:23:17 -0500

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This is another subject that I often wonder about.
If the valve clearance is there to ensure that the valves are fully closed
when the engine is hot then why, when I check the clearances on a hot
engine after a dyno run,  are they hardly any less than they were cold?
I can appreciate that the valve train components grow because of the heat
but surely the block and head and rocker shaft pedistals also grow and thus
there is little if any net change.
I also appreciate that the exhaust valve stem get really hot but ????
Just wondering....

M

On Sun, Jan 13, 2019, 6:42 AM WILLIAM B LAWRENCE <[email-masked] wrote:

> I disagree that valve clearances are not critical. As the engine comes up
> to temperature the metal parts of the valve train (valves, lifters, push
> rods, the head itself and the rocker shaft towers) increase in length and
> the valve clearances are calculated to assure that this expansion isn't
> allowed to affect the sealing of the valves on their seats. If the valves
> are set too tight they reach a point where they won't touch the seats and
> therefore won't seal. Hot gases rushing through the gaps will quickly ero=
de
> the valves. Also increasing the duration and/or lift of the cam has the
> effect of the  decreasing the length of the opening and closing ramps on
> the back side of the cam This reduces the length of time (dwell) the valv=
e
> remains on the seat. Increasing the valve clearance restores the dwell ti=
me
> the valve needs to transfer its heat load to the cooling system through t=
he
> valve seat and the cylinder head. Too little dwell time or the lack of
> proper valve sealing are two causes of burned valves.
>
> In my own experience I installed an Isky cam with a grind a little more
> aggressive than the 100M cam and set the clearances to 0.012" per the
> manual. Within about 2,000 miles the exhaust valves were trashed. I then
> took the time to read the Isky installation instructions which specifical=
ly
> state the valve clearance needs to be set to 0.018". I re-installed the
> head with new valves and set them to Isky's spec and never had another
> problem with burned valves.
>
> Follow the cam grinder's recommendations and you will avoid trouble.
>
> Bill Lawrence
> BN1 #554
> ------------------------------
> *From:* Healeys <[email-masked]> on behalf of Bob Spidell
> <[email-masked]>
> *Sent:* Saturday, January 12, 2019 11:10 PM
> *To:* Michael MacLean; [email-masked]
> *Subject:* Re: [Healeys] Valve clearances
>
>
> I should note the rockers are pretty noisy at 0.015; IIRC I tightened the=
m
> up just a bit.
> On 1/12/2019 2:39 PM, Michael MacLean wrote:
>
> I'd go with .016.  You can always tighten it.  Better loose than tight.
> Mike MacLean
>
> On Saturday, January 12, 2019, 11:01:32 AM PST, Bob Spidell
> <[email-masked]> <[email-masked]> wrote:
>
>
> Makes sense (for some reason).  I put a DWR1 cam in my BJ8 which,
> according to DWR, 'is a little better than the BJ8 cam and so works well =
in
> any standard or mildly tuned car' but I think the 0.015" applies to all
> profiles on the spec sheet.
>
> Bob
> On 1/11/2019 8:48 PM, John Rowe wrote:
>
> Simon,
>
> Modified cams require the large clearance (don=E2=80=99t ask me why?) So =
go for
> .015 that is what mine is.
>
> John Rowe
>
> Qld
>
> Australia
>
>
>
> *From:* Healeys [mailto:[email-masked]
> <[email-masked]>] *On Behalf Of *
> [email-masked]
> *Sent:* Saturday, 12 January 2019 9:14 AM
> *To:* Healeys
> *Subject:* [Healeys] Valve clearances
>
>
>
> The car is a MkII BT7.
>
> The BMC manual says adjust the clearances, cold, to 0.012=E2=80=9D.
>
> Denis Welch said I should go 0.015=E2=80=9D, cold, after fitting their =
=E2=80=9CFast Road=E2=80=9D
> cam.
>
> The rolling road guy said 0.016=E2=80=9D, warm.
>
>
>
> I have the radiator out right now so I can get a nice socket onto that nu=
t
> and have a go at the clearances.
>
> Stick with 0.015=E2=80=9D, cold?
>
>
>
> Thanks,
>
> Simon
>
>
>
> _______________________________________________
> Support Team.Net http://www.team.net/donate.html
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>
> Archive: http://www.team.net/pipermail/healeys
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<div dir=3D"auto">This is another subject that I often wonder about.=C2=A0<=
div dir=3D"auto">If the valve clearance is there to ensure that the valves =
are fully closed when the engine is hot then why, when I check the clearanc=
es on a hot engine after a dyno run,=C2=A0 are they hardly any less than th=
ey were cold?</div><div dir=3D"auto">I can appreciate that the valve train =
components grow because of the heat but surely the block and head and rocke=
r shaft pedistals also grow and thus there is little if any net change.</di=
v><div dir=3D"auto">I also appreciate that the exhaust valve stem get reall=
y hot but ????</div><div dir=3D"auto">Just wondering....</div><div dir=3D"a=
uto"><br></div><div dir=3D"auto">M</div></div><br><div class=3D"gmail_quote=
"><div dir=3D"ltr">On Sun, Jan 13, 2019, 6:42 AM WILLIAM B LAWRENCE &lt;<a =
href=3D"mailto:[email-masked]">[email-masked]</a> wrote:<br></div><blockq=
uote class=3D"gmail_quote" style=3D"margin:0 0 0 .8ex;border-left:1px #ccc =
solid;padding-left:1ex">

<div dir=3D"ltr">
<div style=3D"font-family:Calibri,Helvetica,sans-serif;font-size:12pt;color=
:rgb(0,0,0)">
I disagree that valve clearances are not critical. As the engine comes up t=
o temperature the metal parts of the valve train (valves, lifters, push rod=
s, the head itself and the rocker shaft towers) increase in length and the =
valve clearances are calculated
 to assure that this expansion isn&#39;t allowed to affect the sealing of t=
he valves on their seats. If the valves are set too tight they reach a poin=
t where they won&#39;t touch the seats and therefore won&#39;t seal. Hot ga=
ses rushing through the gaps will quickly erode
 the valves. Also i<span style=3D"font-family:Calibri,Helvetica,sans-serif;=
background-color:rgb(255,255,255);display:inline!important">ncreasing the d=
uration and/or lift of the cam has the effect of the =C2=A0decreasing the l=
ength
 of the opening and closing ramps on the back side of the cam This reduces =
the length of time (dwell) the valve remains on the seat. Increasing the va=
lve clearance restores the dwell time the valve needs to transfer its heat =
load to the cooling system through
 the valve seat and the cylinder head. Too little dwell time or the lack of=
 proper valve sealing are two causes of burned valves.</span></div>
<div style=3D"font-family:Calibri,Helvetica,sans-serif;font-size:12pt;color=
:rgb(0,0,0)">
<br>
</div>
<div style=3D"font-family:Calibri,Helvetica,sans-serif;font-size:12pt;color=
:rgb(0,0,0)">
In my own experience I installed an Isky cam with a grind a little more agg=
ressive than the 100M cam and set the clearances to 0.012&quot; per the man=
ual. Within about 2,000 miles the exhaust valves were trashed. I then took =
the time to read the Isky installation
 instructions which specifically state the valve clearance needs to be set =
to 0.018&quot;. I re-installed the head with new valves and set them to Isk=
y&#39;s spec and never had another problem with burned valves.</div>
<div style=3D"font-family:Calibri,Helvetica,sans-serif;font-size:12pt;color=
:rgb(0,0,0)">
<br>
</div>
<div style=3D"font-family:Calibri,Helvetica,sans-serif;font-size:12pt;color=
:rgb(0,0,0)">
Follow the cam grinder&#39;s recommendations and you will avoid trouble.</d=
iv>
<div style=3D"font-family:Calibri,Helvetica,sans-serif;font-size:12pt;color=
:rgb(0,0,0)">
<br>
</div>
<div style=3D"font-family:Calibri,Helvetica,sans-serif;font-size:12pt;color=
:rgb(0,0,0)">
Bill Lawrence</div>
<div style=3D"font-family:Calibri,Helvetica,sans-serif;font-size:12pt;color=
:rgb(0,0,0)">
BN1 #554</div>
<div id=3D"m_1603937236670712738appendonsend"></div>
<hr style=3D"display:inline-block;width:98%">
<div id=3D"m_1603937236670712738divRplyFwdMsg" dir=3D"ltr"><font face=3D"Ca=
libri, sans-serif" style=3D"font-size:11pt" color=3D"#000000"><b>From:</b> =
Healeys &lt;<a href=3D"mailto:[email-masked]" target=3D"_bl=
ank" rel=3D"noreferrer">[email-masked]</a>&gt; on behalf of=
 Bob Spidell &lt;<a href=3D"mailto:[email-masked]" target=3D"_blank" =
rel=3D"noreferrer">[email-masked]</a>&gt;<br>
<b>Sent:</b> Saturday, January 12, 2019 11:10 PM<br>
<b>To:</b> Michael MacLean; <a href=3D"mailto:[email-masked]" targe=
t=3D"_blank" rel=3D"noreferrer">[email-masked]</a><br>
<b>Subject:</b> Re: [Healeys] Valve clearances</font>
<div>=C2=A0</div>
</div>
<div style=3D"background-color:#ffffff">
<p>I should note the rockers are pretty noisy at 0.015; IIRC I tightened th=
em up just a bit.<br>
</p>
<div class=3D"m_1603937236670712738x_moz-cite-prefix">On 1/12/2019 2:39 PM,=
 Michael MacLean wrote:<br>
</div>
<blockquote type=3D"cite">
<div class=3D"m_1603937236670712738x_ydpe1d3e9c5yahoo-style-wrap" style=3D"=
font-family:times new roman,new york,times,serif;font-size:16px">
<div>I&#39;d go with .016.=C2=A0 You can always tighten it.=C2=A0 Better lo=
ose than tight.</div>
<div>Mike MacLean<br>
</div>
<div><br>
</div>
</div>
<div id=3D"m_1603937236670712738x_yahoo_quoted_8268064185" class=3D"m_16039=
37236670712738x_yahoo_quoted">
<div style=3D"font-family:&#39;Helvetica Neue&#39;,Helvetica,Arial,sans-ser=
if;font-size:13px;color:#26282a">
<div>On Saturday, January 12, 2019, 11:01:32 AM PST, Bob Spidell <a class=
=3D"m_1603937236670712738x_moz-txt-link-rfc2396E" href=3D"mailto:bspidell@c=
omcast.net" target=3D"_blank" rel=3D"noreferrer">
&lt;[email-masked]&gt;</a> wrote: </div>
<div><br>
</div>
<div><br>
</div>
<div>
<div id=3D"m_1603937236670712738x_yiv1110160614">
<div>
<p>Makes sense (for some reason).=C2=A0 I put a DWR1 cam in my BJ8 which, a=
ccording to DWR, &#39;is a little better than the BJ8 cam and so works well=
 in any standard or mildly tuned car&#39; but I think the 0.015&quot; appli=
es to all profiles on the spec sheet.<br clear=3D"none">
</p>
<p>Bob<br clear=3D"none">
</p>
<div class=3D"m_1603937236670712738x_yiv1110160614yqt0287165987" id=3D"m_16=
03937236670712738x_yiv1110160614yqt70378">
<div class=3D"m_1603937236670712738x_yiv1110160614moz-cite-prefix">On 1/11/=
2019 8:48 PM, John Rowe wrote:<br clear=3D"none">
</div>
<blockquote type=3D"cite"></blockquote>
</div>
</div>
<div class=3D"m_1603937236670712738x_yiv1110160614yqt0287165987" id=3D"m_16=
03937236670712738x_yiv1110160614yqt92654">
<div>
<div class=3D"m_1603937236670712738x_yiv1110160614WordSection1">
<p class=3D"m_1603937236670712738x_yiv1110160614MsoNormal"><span style=3D"c=
olor:#1f497d">Simon,</span></p>
<p class=3D"m_1603937236670712738x_yiv1110160614MsoNormal"><span style=3D"c=
olor:#1f497d">Modified cams require the large clearance (don=E2=80=99t ask =
me why?) So go for .015 that is what mine is.</span></p>
<p class=3D"m_1603937236670712738x_yiv1110160614MsoNormal"><span style=3D"c=
olor:#1f497d">John Rowe</span></p>
<p class=3D"m_1603937236670712738x_yiv1110160614MsoNormal"><span style=3D"c=
olor:#1f497d">Qld</span></p>
<p class=3D"m_1603937236670712738x_yiv1110160614MsoNormal"><span style=3D"c=
olor:#1f497d">Australia</span></p>
<p class=3D"m_1603937236670712738x_yiv1110160614MsoNormal"><span style=3D"c=
olor:#1f497d">=C2=A0</span></p>
<div>
<div style=3D"border:none;border-top:solid #b5c4df 1.0pt;padding:3.0pt 0cm =
0cm 0cm">
<p class=3D"m_1603937236670712738x_yiv1110160614MsoNormal"><b><span lang=3D=
"EN-US" style=3D"font-size:10.0pt">From:</span></b><span lang=3D"EN-US" sty=
le=3D"font-size:10.0pt"> Healeys [<a rel=3D"nofollow noreferrer" shape=3D"r=
ect" class=3D"m_1603937236670712738x_yiv1110160614moz-txt-link-freetext" hr=
ef=3D"mailto:[email-masked]" target=3D"_blank">mailto:heale=
[email-masked]</a>]
<b>On Behalf Of </b><a rel=3D"nofollow noreferrer" shape=3D"rect" class=3D"=
m_1603937236670712738x_yiv1110160614moz-txt-link-abbreviated" href=3D"mailt=
o:[email-masked]" target=3D"_blank">simon.lachlan@alexar=
evel.plus.com</a><br clear=3D"none">
<b>Sent:</b> Saturday, 12 January 2019 9:14 AM<br clear=3D"none">
<b>To:</b> Healeys<br clear=3D"none">
<b>Subject:</b> [Healeys] Valve clearances</span></p>
</div>
</div>
<p class=3D"m_1603937236670712738x_yiv1110160614MsoNormal">=C2=A0</p>
<p class=3D"m_1603937236670712738x_yiv1110160614MsoNormal"><span lang=3D"EN=
-GB">The car is a MkII BT7.</span></p>
<p class=3D"m_1603937236670712738x_yiv1110160614MsoNormal"><span lang=3D"EN=
-GB">The BMC manual says adjust the clearances, cold, to 0.012=E2=80=9D.</s=
pan></p>
<p class=3D"m_1603937236670712738x_yiv1110160614MsoNormal"><span lang=3D"EN=
-GB">Denis Welch said I should go 0.015=E2=80=9D, cold, after fitting their=
 =E2=80=9CFast Road=E2=80=9D cam.</span></p>
<p class=3D"m_1603937236670712738x_yiv1110160614MsoNormal"><span lang=3D"EN=
-GB">The rolling road guy said 0.016=E2=80=9D, warm.</span></p>
<p class=3D"m_1603937236670712738x_yiv1110160614MsoNormal"><span lang=3D"EN=
-GB">=C2=A0</span></p>
<p class=3D"m_1603937236670712738x_yiv1110160614MsoNormal"><span lang=3D"EN=
-GB">I have the radiator out right now so I can get a nice socket onto that=
 nut and have a go at the clearances.</span></p>
<p class=3D"m_1603937236670712738x_yiv1110160614MsoNormal"><span lang=3D"EN=
-GB">Stick with 0.015=E2=80=9D, cold?</span></p>
<p class=3D"m_1603937236670712738x_yiv1110160614MsoNormal"><span lang=3D"EN=
-GB">=C2=A0</span></p>
<p class=3D"m_1603937236670712738x_yiv1110160614MsoNormal"><span lang=3D"EN=
-GB">Thanks,</span></p>
<p class=3D"m_1603937236670712738x_yiv1110160614MsoNormal"><span lang=3D"EN=
-GB">Simon</span></p>
</div>
<br>
</div>
</div>
</div>
</div>
</div>
</div>
<div id=3D"m_1603937236670712738x_DAB4FAD8-2DD7-40BB-A1B8-4E2AA1F9FDF2">
<table style=3D"border-top:1px solid #d3d4de">
<tbody>
<tr>
<td style=3D"width:55px;padding-top:13px"><br>
</td>
<td style=3D"width:470px;padding-top:12px;color:#41424e;font-size:13px;font=
-family:Arial,Helvetica,sans-serif;line-height:18px">
<br>
</td>
</tr>
</tbody>
</table>
</div>
</blockquote>
</div>
</div>

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</blockquote></div>

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---

From: <[email-masked]>
Date: Tue, 12 Feb 2019 09:30:02 -0600

This is a multipart message in MIME format.

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Mike,

=20

You are correct that the valve train components change very, very =
little.  Expansion of components causing valves to not close is an old =
wives tale that gets repeated many times until shade tree mechanics turn =
it into gospel=E2=80=A6=E2=80=A6  Burned valves are caused by other =
design, assembly or materials factors.

=20

Best regards,

Jim

=20

From: Healeys <[email-masked]> On Behalf Of Michael =
Salter
Sent: Sunday, January 13, 2019 5:23 PM
To: WILLIAM B LAWRENCE <[email-masked]>
Cc: [email-masked]
Subject: Re: [Healeys] Valve clearances

=20

This is another subject that I often wonder about.=20

If the valve clearance is there to ensure that the valves are fully =
closed when the engine is hot then why, when I check the clearances on a =
hot engine after a dyno run,  are they hardly any less than they were =
cold?

I can appreciate that the valve train components grow because of the =
heat but surely the block and head and rocker shaft pedistals also grow =
and thus there is little if any net change.

Just wondering....

=20

M

=20

On Sun, Jan 13, 2019, 6:42 AM WILLIAM B LAWRENCE <[email-masked] =

I disagree that valve clearances are not critical. As the engine comes =
up to temperature the metal parts of the valve train (valves, lifters, =
push rods, the head itself and the rocker shaft towers) increase in =
length and the valve clearances are calculated to assure that this =
expansion isn't allowed to affect the sealing of the valves on their =
seats. If the valves are set too tight they reach a point where they =
won't touch the seats and therefore won't seal. Hot gases rushing =
through the gaps will quickly erode the valves. Also increasing the =
duration and/or lift of the cam has the effect of the  decreasing the =
length of the opening and closing ramps on the back side of the cam This =
reduces the length of time (dwell) the valve remains on the seat. =
Increasing the valve clearance restores the dwell time the valve needs =
to transfer its heat load to the cooling system through the valve seat =
and the cylinder head. Too little dwell time or the lack of proper valve =
sealing are two causes of burned valves.

=20

In my own experience I installed an Isky cam with a grind a little more =
aggressive than the 100M cam and set the clearances to 0.012" per the =
manual. Within about 2,000 miles the exhaust valves were trashed. I then =
took the time to read the Isky installation instructions which =
specifically state the valve clearance needs to be set to 0.018". I =
re-installed the head with new valves and set them to Isky's spec and =
never had another problem with burned valves.

=20

=20

Bill Lawrence

BN1 #554

  _____ =20

From: Healeys <[email-masked] =
Sent: Saturday, January 12, 2019 11:10 PM
To: Michael MacLean; [email-masked] =
Subject: Re: [Healeys] Valve clearances=20

=20

I should note the rockers are pretty noisy at 0.015; IIRC I tightened =
them up just a bit.

Mike MacLean

=20

On Saturday, January 12, 2019, 11:01:32 AM PST, Bob Spidell  =

=20

=20

Makes sense (for some reason).  I put a DWR1 cam in my BJ8 which, =
according to DWR, 'is a little better than the BJ8 cam and so works well =
in any standard or mildly tuned car' but I think the 0.015" applies to =
all profiles on the spec sheet.

Bob

Simon,

Modified cams require the large clearance (don=E2=80=99t ask me why?) So =
go for .015 that is what mine is.

John Rowe

Qld

Australia

=20

From: Healeys [mailto:[email-masked]] On Behalf Of =
[email-masked] =
Sent: Saturday, 12 January 2019 9:14 AM
To: Healeys
Subject: [Healeys] Valve clearances

=20

The car is a MkII BT7.

Denis Welch said I should go 0.015=E2=80=9D, cold, after fitting their =
=E2=80=9CFast Road=E2=80=9D cam.

=20

I have the radiator out right now so I can get a nice socket onto that =
nut and have a go at the clearances.

=20

Thanks,

Simon

=20

	=09

Archive: http://www.team.net/pipermail/healeys =
http://autox.team.net/archive

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</o:shapelayout></xml><![endif]--></head><body lang=3DEN-US link=3Dblue =
vlink=3Dpurple><div class=3DWordSection1><p =
class=3DMsoNormal>Mike,<o:p></o:p></p><p =
class=3DMsoNormal><o:p>&nbsp;</o:p></p><p class=3DMsoNormal>You are =
correct that the valve train components change very, very little.=C2=A0 =
Expansion of components causing valves to not close is an old wives tale =
that gets repeated many times until shade tree mechanics turn it into =
gospel=E2=80=A6=E2=80=A6=C2=A0 Burned valves are caused by other design, =
assembly or materials factors.<o:p></o:p></p><p =
class=3DMsoNormal><o:p>&nbsp;</o:p></p><p class=3DMsoNormal>Best =
regards,<o:p></o:p></p><p class=3DMsoNormal>Jim<o:p></o:p></p><p =
class=3DMsoNormal><o:p>&nbsp;</o:p></p><p class=3DMsoNormal><b>From:</b> =
Healeys &lt;[email-masked]&gt; <b>On Behalf Of =
</b>Michael Salter<br><b>Sent:</b> Sunday, January 13, 2019 5:23 =
PM<br><b>To:</b> WILLIAM B LAWRENCE =
&lt;[email-masked]&gt;<br><b>Cc:</b> =
[email-masked]<br><b>Subject:</b> Re: [Healeys] Valve =
clearances<o:p></o:p></p><p =
class=3DMsoNormal><o:p>&nbsp;</o:p></p><div><p class=3DMsoNormal>This is =
another subject that I often wonder about.&nbsp;<o:p></o:p></p><div><p =
class=3DMsoNormal>If the valve clearance is there to ensure that the =
valves are fully closed when the engine is hot then why, when I check =
the clearances on a hot engine after a dyno run,&nbsp; are they hardly =
any less than they were cold?<o:p></o:p></p></div><div><p =
class=3DMsoNormal>I can appreciate that the valve train components grow =
because of the heat but surely the block and head and rocker shaft =
pedistals also grow and thus there is little if any net =
change.<o:p></o:p></p></div><div><p class=3DMsoNormal>I also appreciate =
that the exhaust valve stem get really hot but =
????<o:p></o:p></p></div><div><p class=3DMsoNormal>Just =
wondering....<o:p></o:p></p></div><div><p =
class=3DMsoNormal><o:p>&nbsp;</o:p></p></div><div><p =
class=3DMsoNormal>M<o:p></o:p></p></div></div><p =
class=3DMsoNormal><o:p>&nbsp;</o:p></p><div><div><p class=3DMsoNormal>On =
Sun, Jan 13, 2019, 6:42 AM WILLIAM B LAWRENCE &lt;<a =
href=3D"mailto:[email-masked]">[email-masked]</a> =
wrote:<o:p></o:p></p></div><blockquote =
style=3D'border:none;border-left:solid #CCCCCC 1.0pt;padding:0in 0in 0in =
6.0pt;margin-left:4.8pt;margin-right:0in'><div><div><p =
class=3DMsoNormal><span style=3D'font-size:12.0pt;color:black'>I =
disagree that valve clearances are not critical. As the engine comes up =
to temperature the metal parts of the valve train (valves, lifters, push =
rods, the head itself and the rocker shaft towers) increase in length =
and the valve clearances are calculated to assure that this expansion =
isn't allowed to affect the sealing of the valves on their seats. If the =
valves are set too tight they reach a point where they won't touch the =
seats and therefore won't seal. Hot gases rushing through the gaps will =
quickly erode the valves. Also i<span =
style=3D'background:white'>ncreasing the duration and/or lift of the cam =
has the effect of the &nbsp;decreasing the length of the opening and =
closing ramps on the back side of the cam This reduces the length of =
time (dwell) the valve remains on the seat. Increasing the valve =
clearance restores the dwell time the valve needs to transfer its heat =
load to the cooling system through the valve seat and the cylinder head. =
Too little dwell time or the lack of proper valve sealing are two causes =
of burned valves.</span><o:p></o:p></span></p></div><div><p =
class=3DMsoNormal><span =
style=3D'font-size:12.0pt;color:black'><o:p>&nbsp;</o:p></span></p></div>=
<div><p class=3DMsoNormal><span =
style=3D'font-size:12.0pt;color:black'>In my own experience I installed =
an Isky cam with a grind a little more aggressive than the 100M cam and =
set the clearances to 0.012&quot; per the manual. Within about 2,000 =
miles the exhaust valves were trashed. I then took the time to read the =
Isky installation instructions which specifically state the valve =
clearance needs to be set to 0.018&quot;. I re-installed the head with =
new valves and set them to Isky's spec and never had another problem =
with burned valves.<o:p></o:p></span></p></div><div><p =
class=3DMsoNormal><span =
style=3D'font-size:12.0pt;color:black'><o:p>&nbsp;</o:p></span></p></div>=
<div><p class=3DMsoNormal><span =
style=3D'font-size:12.0pt;color:black'>Follow the cam grinder's =
recommendations and you will avoid =
trouble.<o:p></o:p></span></p></div><div><p class=3DMsoNormal><span =
style=3D'font-size:12.0pt;color:black'><o:p>&nbsp;</o:p></span></p></div>=
<div><p class=3DMsoNormal><span =
style=3D'font-size:12.0pt;color:black'>Bill =
Lawrence<o:p></o:p></span></p></div><div><p class=3DMsoNormal><span =
style=3D'font-size:12.0pt;color:black'>BN1 =
#554<o:p></o:p></span></p></div><div class=3DMsoNormal align=3Dcenter =
style=3D'text-align:center'><hr size=3D3 width=3D"98%" =
align=3Dcenter></div><div id=3D"m_1603937236670712738divRplyFwdMsg"><p =
class=3DMsoNormal><b><span style=3D'color:black'>From:</span></b><span =
style=3D'color:black'> Healeys &lt;<a =
href=3D"mailto:[email-masked]" =
target=3D"_blank">[email-masked]</a>&gt; on behalf of =
Bob Spidell &lt;<a href=3D"mailto:[email-masked]" =
target=3D"_blank">[email-masked]</a>&gt;<br><b>Sent:</b> Saturday, =
January 12, 2019 11:10 PM<br><b>To:</b> Michael MacLean; <a =
href=3D"mailto:[email-masked]" =
target=3D"_blank">[email-masked]</a><br><b>Subject:</b> Re: =
[Healeys] Valve clearances</span> <o:p></o:p></p><div><p =
class=3DMsoNormal>&nbsp;<o:p></o:p></p></div></div><div><p =
style=3D'background:white'>I should note the rockers are pretty noisy at =
0.015; IIRC I tightened them up just a bit.<o:p></o:p></p><div><p =
class=3DMsoNormal style=3D'background:white'>On 1/12/2019 2:39 PM, =
Michael MacLean wrote:<o:p></o:p></p></div><blockquote =
style=3D'margin-top:5.0pt;margin-bottom:5.0pt'><div><div><p =
class=3DMsoNormal style=3D'background:white'><span =
style=3D'font-size:12.0pt;font-family:"Times New Roman",serif'>I'd go =
with .016.&nbsp; You can always tighten it.&nbsp; Better loose than =
tight.<o:p></o:p></span></p></div><div><p class=3DMsoNormal =
style=3D'background:white'><span =
style=3D'font-size:12.0pt;font-family:"Times New Roman",serif'>Mike =
MacLean<o:p></o:p></span></p></div><div><p class=3DMsoNormal =
style=3D'background:white'><span =
style=3D'font-size:12.0pt;font-family:"Times New =
Roman",serif'><o:p>&nbsp;</o:p></span></p></div></div><div =
id=3D"m_1603937236670712738x_yahoo_quoted_8268064185"><div><div><p =
class=3DMsoNormal style=3D'background:white'><span =
style=3D'font-size:10.0pt;font-family:"Helvetica",sans-serif;color:#26282=
A'>On Saturday, January 12, 2019, 11:01:32 AM PST, Bob Spidell <a =
href=3D"mailto:[email-masked]" =
target=3D"_blank">&lt;[email-masked]&gt;</a> wrote: =
<o:p></o:p></span></p></div><div><p class=3DMsoNormal =
style=3D'background:white'><span =
style=3D'font-size:10.0pt;font-family:"Helvetica",sans-serif;color:#26282=
A'><o:p>&nbsp;</o:p></span></p></div><div><p class=3DMsoNormal =
style=3D'background:white'><span =
style=3D'font-size:10.0pt;font-family:"Helvetica",sans-serif;color:#26282=
A'><o:p>&nbsp;</o:p></span></p></div><div><div =
id=3D"m_1603937236670712738x_yiv1110160614"><div><p =
style=3D'background:white'><span =
style=3D'font-size:10.0pt;font-family:"Helvetica",sans-serif;color:#26282=
A'>Makes sense (for some reason).&nbsp; I put a DWR1 cam in my BJ8 =
which, according to DWR, 'is a little better than the BJ8 cam and so =
works well in any standard or mildly tuned car' but I think the =
0.015&quot; applies to all profiles on the spec =
sheet.<o:p></o:p></span></p><p style=3D'background:white'><span =
style=3D'font-size:10.0pt;font-family:"Helvetica",sans-serif;color:#26282=
A'>Bob<o:p></o:p></span></p><div =
id=3D"m_1603937236670712738x_yiv1110160614yqt70378"><div><p =
class=3DMsoNormal style=3D'background:white'><span =
style=3D'font-size:10.0pt;font-family:"Helvetica",sans-serif;color:#26282=
A'>On 1/11/2019 8:48 PM, John Rowe =
wrote:<o:p></o:p></span></p></div></div></div><div =
id=3D"m_1603937236670712738x_yiv1110160614yqt92654"><div><div><p =
class=3Dm1603937236670712738xyiv1110160614msonormal =
style=3D'background:white'><span =
style=3D'font-size:10.0pt;font-family:"Helvetica",sans-serif;color:#1F497=
D'>Simon,</span><span =
style=3D'font-size:10.0pt;font-family:"Helvetica",sans-serif;color:#26282=
A'><o:p></o:p></span></p><p =
class=3Dm1603937236670712738xyiv1110160614msonormal =
style=3D'background:white'><span =
style=3D'font-size:10.0pt;font-family:"Helvetica",sans-serif;color:#1F497=
D'>Modified cams require the large clearance (don=E2=80=99t ask me why?) =
So go for .015 that is what mine is.</span><span =
style=3D'font-size:10.0pt;font-family:"Helvetica",sans-serif;color:#26282=
A'><o:p></o:p></span></p><p =
class=3Dm1603937236670712738xyiv1110160614msonormal =
style=3D'background:white'><span =
style=3D'font-size:10.0pt;font-family:"Helvetica",sans-serif;color:#1F497=
D'>John Rowe</span><span =
style=3D'font-size:10.0pt;font-family:"Helvetica",sans-serif;color:#26282=
A'><o:p></o:p></span></p><p =
class=3Dm1603937236670712738xyiv1110160614msonormal =
style=3D'background:white'><span =
style=3D'font-size:10.0pt;font-family:"Helvetica",sans-serif;color:#1F497=
D'>Qld</span><span =
style=3D'font-size:10.0pt;font-family:"Helvetica",sans-serif;color:#26282=
A'><o:p></o:p></span></p><p =
class=3Dm1603937236670712738xyiv1110160614msonormal =
style=3D'background:white'><span =
style=3D'font-size:10.0pt;font-family:"Helvetica",sans-serif;color:#1F497=
D'>Australia</span><span =
style=3D'font-size:10.0pt;font-family:"Helvetica",sans-serif;color:#26282=
A'><o:p></o:p></span></p><p =
class=3Dm1603937236670712738xyiv1110160614msonormal =
style=3D'background:white'><span =
style=3D'font-size:10.0pt;font-family:"Helvetica",sans-serif;color:#1F497=
D'>&nbsp;</span><span =
style=3D'font-size:10.0pt;font-family:"Helvetica",sans-serif;color:#26282=
A'><o:p></o:p></span></p><div><div style=3D'border:none;border-top:solid =
#B5C4DF 1.0pt;padding:3.0pt 0in 0in 0in'><p =
class=3Dm1603937236670712738xyiv1110160614msonormal =
style=3D'background:white'><b><span =
style=3D'font-size:10.0pt;font-family:"Helvetica",sans-serif;color:#26282=
A'>From:</span></b><span =
style=3D'font-size:10.0pt;font-family:"Helvetica",sans-serif;color:#26282=
A'> Healeys [<a href=3D"mailto:[email-masked]" =
target=3D"_blank">mailto:[email-masked]</a>] <b>On =
Behalf Of </b><a href=3D"mailto:[email-masked]" =
target=3D"_blank">[email-masked]</a><br><b>Sent:</b> =
Saturday, 12 January 2019 9:14 AM<br><b>To:</b> =
Healeys<br><b>Subject:</b> [Healeys] Valve =
clearances<o:p></o:p></span></p></div></div><p =
class=3Dm1603937236670712738xyiv1110160614msonormal =
style=3D'background:white'><span =
style=3D'font-size:10.0pt;font-family:"Helvetica",sans-serif;color:#26282=
A'>&nbsp;<o:p></o:p></span></p><p =
class=3Dm1603937236670712738xyiv1110160614msonormal =
style=3D'background:white'><span lang=3DEN-GB =
style=3D'font-size:10.0pt;font-family:"Helvetica",sans-serif;color:#26282=
A'>The car is a MkII BT7.</span><span =
style=3D'font-size:10.0pt;font-family:"Helvetica",sans-serif;color:#26282=
A'><o:p></o:p></span></p><p =
class=3Dm1603937236670712738xyiv1110160614msonormal =
style=3D'background:white'><span lang=3DEN-GB =
style=3D'font-size:10.0pt;font-family:"Helvetica",sans-serif;color:#26282=
A'>The BMC manual says adjust the clearances, cold, to =
0.012=E2=80=9D.</span><span =
style=3D'font-size:10.0pt;font-family:"Helvetica",sans-serif;color:#26282=
A'><o:p></o:p></span></p><p =
class=3Dm1603937236670712738xyiv1110160614msonormal =
style=3D'background:white'><span lang=3DEN-GB =
style=3D'font-size:10.0pt;font-family:"Helvetica",sans-serif;color:#26282=
A'>Denis Welch said I should go 0.015=E2=80=9D, cold, after fitting =
their =E2=80=9CFast Road=E2=80=9D cam.</span><span =
style=3D'font-size:10.0pt;font-family:"Helvetica",sans-serif;color:#26282=
A'><o:p></o:p></span></p><p =
class=3Dm1603937236670712738xyiv1110160614msonormal =
style=3D'background:white'><span lang=3DEN-GB =
style=3D'font-size:10.0pt;font-family:"Helvetica",sans-serif;color:#26282=
A'>The rolling road guy said 0.016=E2=80=9D, warm.</span><span =
style=3D'font-size:10.0pt;font-family:"Helvetica",sans-serif;color:#26282=
A'><o:p></o:p></span></p><p =
class=3Dm1603937236670712738xyiv1110160614msonormal =
style=3D'background:white'><span lang=3DEN-GB =
style=3D'font-size:10.0pt;font-family:"Helvetica",sans-serif;color:#26282=
A'>&nbsp;</span><span =
style=3D'font-size:10.0pt;font-family:"Helvetica",sans-serif;color:#26282=
A'><o:p></o:p></span></p><p =
class=3Dm1603937236670712738xyiv1110160614msonormal =
style=3D'background:white'><span lang=3DEN-GB =
style=3D'font-size:10.0pt;font-family:"Helvetica",sans-serif;color:#26282=
A'>I have the radiator out right now so I can get a nice socket onto =
that nut and have a go at the clearances.</span><span =
style=3D'font-size:10.0pt;font-family:"Helvetica",sans-serif;color:#26282=
A'><o:p></o:p></span></p><p =
class=3Dm1603937236670712738xyiv1110160614msonormal =
style=3D'background:white'><span lang=3DEN-GB =
style=3D'font-size:10.0pt;font-family:"Helvetica",sans-serif;color:#26282=
A'>Stick with 0.015=E2=80=9D, cold?</span><span =
style=3D'font-size:10.0pt;font-family:"Helvetica",sans-serif;color:#26282=
A'><o:p></o:p></span></p><p =
class=3Dm1603937236670712738xyiv1110160614msonormal =
style=3D'background:white'><span lang=3DEN-GB =
style=3D'font-size:10.0pt;font-family:"Helvetica",sans-serif;color:#26282=
A'>&nbsp;</span><span =
style=3D'font-size:10.0pt;font-family:"Helvetica",sans-serif;color:#26282=
A'><o:p></o:p></span></p><p =
class=3Dm1603937236670712738xyiv1110160614msonormal =
style=3D'background:white'><span lang=3DEN-GB =
style=3D'font-size:10.0pt;font-family:"Helvetica",sans-serif;color:#26282=
A'>Thanks,</span><span =
style=3D'font-size:10.0pt;font-family:"Helvetica",sans-serif;color:#26282=
A'><o:p></o:p></span></p><p =
class=3Dm1603937236670712738xyiv1110160614msonormal =
style=3D'background:white'><span lang=3DEN-GB =
style=3D'font-size:10.0pt;font-family:"Helvetica",sans-serif;color:#26282=
A'>Simon</span><span =
style=3D'font-size:10.0pt;font-family:"Helvetica",sans-serif;color:#26282=
A'><o:p></o:p></span></p></div><p class=3DMsoNormal =
style=3D'background:white'><span =
style=3D'font-size:10.0pt;font-family:"Helvetica",sans-serif;color:#26282=
A'><o:p>&nbsp;</o:p></span></p></div></div></div></div></div></div><div =
id=3D"m_1603937236670712738x_DAB4FAD8-2DD7-40BB-A1B8-4E2AA1F9FDF2"><table=
 class=3DMsoNormalTable border=3D1 cellspacing=3D3 cellpadding=3D0 =
style=3D'border:none;border-top:solid #D3D4DE 1.0pt'><tr><td width=3D55 =
style=3D'width:41.25pt;border:none;padding:9.75pt .75pt .75pt =
.75pt'></td><td width=3D470 =
style=3D'width:352.5pt;border:none;padding:9.0pt .75pt .75pt =
.75pt'></td></tr></table></div></blockquote></div></div><p =
class=3DMsoNormal =
style=3D'margin-bottom:12.0pt'>__________________________________________=
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[email-masked]

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---

From: Chris Dimmock <[email-masked]>
Date: Thu, 14 Feb 2019 17:47:21 +1100

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Isn't part of the reason that the valve dissipates heat into the head when i=
t is seated, so part of the reason for valve clearance is to allow the valve=
 to cool?
Maybe try a 4 thou valve clearance and see how it goes?=20
I probably won't!!=20
:-)
Chris=20

Sent from my iPhone

> On 14 Jan 2019, at 10:23 am, Michael Salter <[email-masked]> wro=
te:
> If the valve clearance is there to ensure that the valves are fully closed=
 when the engine is hot then why, when I check the clearances on a hot engin=
e after a dyno run,  are they hardly any less than they were cold?
> I can appreciate that the valve train components grow because of the heat b=
ut surely the block and head and rocker shaft pedistals also grow and thus t=
here is little if any net change.
>> I disagree that valve clearances are not critical. As the engine comes up=
 to temperature the metal parts of the valve train (valves, lifters, push ro=
ds, the head itself and the rocker shaft towers) increase in length and the v=
alve clearances are calculated to assure that this expansion isn't allowed t=
o affect the sealing of the valves on their seats. If the valves are set too=
 tight they reach a point where they won't touch the seats and therefore won=
't seal. Hot gases rushing through the gaps will quickly erode the valves. A=
lso increasing the duration and/or lift of the cam has the effect of the  de=
creasing the length of the opening and closing ramps on the back side of the=
 cam This reduces the length of time (dwell) the valve remains on the seat. I=
ncreasing the valve clearance restores the dwell time the valve needs to tra=
nsfer its heat load to the cooling system through the valve seat and the cyl=
inder head. Too little dwell time or the lack of proper valve sealing are tw=
o causes of burned valves.
>>=20
>> In my own experience I installed an Isky cam with a grind a little more a=
ggressive than the 100M cam and set the clearances to 0.012" per the manual.=
 Within about 2,000 miles the exhaust valves were trashed. I then took the t=
ime to read the Isky installation instructions which specifically state the v=
alve clearance needs to be set to 0.018". I re-installed the head with new v=
alves and set them to Isky's spec and never had another problem with burned v=
alves.
>> From: Healeys <[email-masked]> on behalf of Bob Spidell <=
[email-masked]>
>> To: Michael MacLean; [email-masked]
m up just a bit.
>>> On Saturday, January 12, 2019, 11:01:32 AM PST, Bob Spidell <bspidell@co=
mcast.net> wrote:
>>>=20
>>>=20
>>> Makes sense (for some reason).  I put a DWR1 cam in my BJ8 which, accord=
ing to DWR, 'is a little better than the BJ8 cam and so works well in any st=
andard or mildly tuned car' but I think the 0.015" applies to all profiles o=
n the spec sheet.
>>> Modified cams require the large clearance (don=E2=80=99t ask me why?) So=
>>>=20
>>> John Rowe
>>>=20
>>> Qld
>>>=20
>>> Australia
>>>=20
>>> =20
>>>=20
>>> From: Healeys [mailto:[email-masked]] On Behalf Of simon=
[email-masked]
>>> Denis Welch said I should go 0.015=E2=80=9D, cold, after fitting their =E2=
=80=9CFast Road=E2=80=9D cam.
>>> I have the radiator out right now so I can get a nice socket onto that n=
ut and have a go at the clearances.
>>> Stick with 0.015=E2=80=9D, cold?

--Apple-Mail-C6F951CD-F0D8-423B-BD3D-7D86A0F939AE
	charset=utf-8
Content-Transfer-Encoding: quoted-printable

<html><head><meta http-equiv=3D"content-type" content=3D"text/html; charset=3D=
utf-8"></head><body dir=3D"auto"><div>Isn't part of the reason that the valv=
e dissipates heat into the head when it is seated, so part of the reason for=
 valve clearance is to allow the valve to cool?</div><div id=3D"AppleMailSig=
nature">Maybe try a 4 thou valve clearance and see how it goes?&nbsp;</div><=
div id=3D"AppleMailSignature">I probably won't!!&nbsp;</div><div id=3D"Apple=
MailSignature">:-)</div><div id=3D"AppleMailSignature">Chris&nbsp;<br><br>Se=
nt from my iPhone</div><div><br>On 14 Jan 2019, at 10:23 am, Michael Salter &=
lt;<a href=3D"mailto:[email-masked]">[email-masked]</a>&=
gt; wrote:<br><br></div><blockquote type=3D"cite"><div><div dir=3D"auto">Thi=
s is another subject that I often wonder about.&nbsp;<div dir=3D"auto">If th=
e valve clearance is there to ensure that the valves are fully closed when t=
he engine is hot then why, when I check the clearances on a hot engine after=
 a dyno run,&nbsp; are they hardly any less than they were cold?</div><div d=
ir=3D"auto">I can appreciate that the valve train components grow because of=
 the heat but surely the block and head and rocker shaft pedistals also grow=
 and thus there is little if any net change.</div><div dir=3D"auto">I also a=
ppreciate that the exhaust valve stem get really hot but ????</div><div dir=3D=
"auto">Just wondering....</div><div dir=3D"auto"><br></div><div dir=3D"auto"=
>M</div></div><br><div class=3D"gmail_quote"><div dir=3D"ltr">On Sun, Jan 13=
, 2019, 6:42 AM WILLIAM B LAWRENCE &lt;<a href=3D"mailto:[email-masked]">yn=
[email-masked]</a> wrote:<br></div><blockquote class=3D"gmail_quote" style=3D=
"margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">

<div dir=3D"ltr">
<div style=3D"font-family:Calibri,Helvetica,sans-serif;font-size:12pt;color:=
rgb(0,0,0)">
I disagree that valve clearances are not critical. As the engine comes up to=
 temperature the metal parts of the valve train (valves, lifters, push rods,=
 the head itself and the rocker shaft towers) increase in length and the val=
ve clearances are calculated
 to assure that this expansion isn't allowed to affect the sealing of the va=
lves on their seats. If the valves are set too tight they reach a point wher=
e they won't touch the seats and therefore won't seal. Hot gases rushing thr=
ough the gaps will quickly erode
 the valves. Also i<span style=3D"font-family:Calibri,Helvetica,sans-serif;b=
ackground-color:rgb(255,255,255);display:inline!important">ncreasing the dur=
ation and/or lift of the cam has the effect of the &nbsp;decreasing the leng=
th
 of the opening and closing ramps on the back side of the cam This reduces t=
he length of time (dwell) the valve remains on the seat. Increasing the valv=
e clearance restores the dwell time the valve needs to transfer its heat loa=
d to the cooling system through
 the valve seat and the cylinder head. Too little dwell time or the lack of p=
roper valve sealing are two causes of burned valves.</span></div>
<div style=3D"font-family:Calibri,Helvetica,sans-serif;font-size:12pt;color:=
rgb(0,0,0)">
<br>
</div>
<div style=3D"font-family:Calibri,Helvetica,sans-serif;font-size:12pt;color:=
rgb(0,0,0)">
In my own experience I installed an Isky cam with a grind a little more aggr=
essive than the 100M cam and set the clearances to 0.012" per the manual. Wi=
thin about 2,000 miles the exhaust valves were trashed. I then took the time=
 to read the Isky installation
 instructions which specifically state the valve clearance needs to be set t=
o 0.018". I re-installed the head with new valves and set them to Isky's spe=
c and never had another problem with burned valves.</div>
<div style=3D"font-family:Calibri,Helvetica,sans-serif;font-size:12pt;color:=
rgb(0,0,0)">
<br>
</div>
<div style=3D"font-family:Calibri,Helvetica,sans-serif;font-size:12pt;color:=
rgb(0,0,0)">
Follow the cam grinder's recommendations and you will avoid trouble.</div>
<div style=3D"font-family:Calibri,Helvetica,sans-serif;font-size:12pt;color:=
rgb(0,0,0)">
<br>
</div>
<div style=3D"font-family:Calibri,Helvetica,sans-serif;font-size:12pt;color:=
rgb(0,0,0)">
Bill Lawrence</div>
<div style=3D"font-family:Calibri,Helvetica,sans-serif;font-size:12pt;color:=
rgb(0,0,0)">
BN1 #554</div>
<div id=3D"m_1603937236670712738appendonsend"></div>
<hr style=3D"display:inline-block;width:98%">
<div id=3D"m_1603937236670712738divRplyFwdMsg" dir=3D"ltr"><font face=3D"Cal=
ibri, sans-serif" style=3D"font-size:11pt" color=3D"#000000"><b>From:</b> He=
aleys &lt;<a href=3D"mailto:[email-masked]" target=3D"_blank=
" rel=3D"noreferrer">[email-masked]</a>&gt; on behalf of Bob=
 Spidell &lt;<a href=3D"mailto:[email-masked]" target=3D"_blank" rel=3D=
"noreferrer">[email-masked]</a>&gt;<br>
<b>Sent:</b> Saturday, January 12, 2019 11:10 PM<br>
<b>To:</b> Michael MacLean; <a href=3D"mailto:[email-masked]" target=
=3D"_blank" rel=3D"noreferrer">[email-masked]</a><br>
<b>Subject:</b> Re: [Healeys] Valve clearances</font>
<div>&nbsp;</div>
</div>
<div style=3D"background-color:#ffffff">
<p>I should note the rockers are pretty noisy at 0.015; IIRC I tightened the=
m up just a bit.<br>
</p>
<div class=3D"m_1603937236670712738x_moz-cite-prefix">On 1/12/2019 2:39 PM, M=
ichael MacLean wrote:<br>
</div>
<blockquote type=3D"cite">
<div class=3D"m_1603937236670712738x_ydpe1d3e9c5yahoo-style-wrap" style=3D"f=
ont-family:times new roman,new york,times,serif;font-size:16px">
<div>I'd go with .016.&nbsp; You can always tighten it.&nbsp; Better loose t=
han tight.</div>
<div>Mike MacLean<br>
</div>
<div><br>
</div>
</div>
<div id=3D"m_1603937236670712738x_yahoo_quoted_8268064185" class=3D"m_160393=
7236670712738x_yahoo_quoted">
<div style=3D"font-family:'Helvetica Neue',Helvetica,Arial,sans-serif;font-s=
ize:13px;color:#26282a">
<div>On Saturday, January 12, 2019, 11:01:32 AM PST, Bob Spidell <a class=3D=
"m_1603937236670712738x_moz-txt-link-rfc2396E" href=3D"mailto:bspidell@comca=
st.net" target=3D"_blank" rel=3D"noreferrer">
&lt;[email-masked]&gt;</a> wrote: </div>
<div><br>
</div>
<div><br>
</div>
<div>
<div id=3D"m_1603937236670712738x_yiv1110160614">
<div>
<p>Makes sense (for some reason).&nbsp; I put a DWR1 cam in my BJ8 which, ac=
cording to DWR, 'is a little better than the BJ8 cam and so works well in an=
y standard or mildly tuned car' but I think the 0.015" applies to all profil=
es on the spec sheet.<br clear=3D"none">
</p>
<p>Bob<br clear=3D"none">
</p>
<div class=3D"m_1603937236670712738x_yiv1110160614yqt0287165987" id=3D"m_160=
3937236670712738x_yiv1110160614yqt70378">
<div class=3D"m_1603937236670712738x_yiv1110160614moz-cite-prefix">On 1/11/2=
019 8:48 PM, John Rowe wrote:<br clear=3D"none">
</div>
<blockquote type=3D"cite"></blockquote>
</div>
</div>
<div class=3D"m_1603937236670712738x_yiv1110160614yqt0287165987" id=3D"m_160=
3937236670712738x_yiv1110160614yqt92654">
<div>
<div class=3D"m_1603937236670712738x_yiv1110160614WordSection1">
<p class=3D"m_1603937236670712738x_yiv1110160614MsoNormal"><span style=3D"co=
lor:#1f497d">Simon,</span></p>
<p class=3D"m_1603937236670712738x_yiv1110160614MsoNormal"><span style=3D"co=
lor:#1f497d">Modified cams require the large clearance (don=E2=80=99t ask me=
 why?) So go for .015 that is what mine is.</span></p>
<p class=3D"m_1603937236670712738x_yiv1110160614MsoNormal"><span style=3D"co=
lor:#1f497d">John Rowe</span></p>
<p class=3D"m_1603937236670712738x_yiv1110160614MsoNormal"><span style=3D"co=
lor:#1f497d">Qld</span></p>
<p class=3D"m_1603937236670712738x_yiv1110160614MsoNormal"><span style=3D"co=
lor:#1f497d">Australia</span></p>
<p class=3D"m_1603937236670712738x_yiv1110160614MsoNormal"><span style=3D"co=
lor:#1f497d">&nbsp;</span></p>
<div>
<div style=3D"border:none;border-top:solid #b5c4df 1.0pt;padding:3.0pt 0cm 0=
cm 0cm">
<p class=3D"m_1603937236670712738x_yiv1110160614MsoNormal"><b><span lang=3D"=
EN-US" style=3D"font-size:10.0pt">From:</span></b><span lang=3D"EN-US" style=
=3D"font-size:10.0pt"> Healeys [<a rel=3D"nofollow noreferrer" shape=3D"rect=
" class=3D"m_1603937236670712738x_yiv1110160614moz-txt-link-freetext" href=3D=
"mailto:[email-masked]" target=3D"_blank">mailto:healeys-bou=
[email-masked]</a>]
<b>On Behalf Of </b><a rel=3D"nofollow noreferrer" shape=3D"rect" class=3D"m=
_1603937236670712738x_yiv1110160614moz-txt-link-abbreviated" href=3D"mailto:=
[email-masked]" target=3D"_blank">simon.lachlan@alexareve=
l.plus.com</a><br clear=3D"none">
<b>Sent:</b> Saturday, 12 January 2019 9:14 AM<br clear=3D"none">
<b>To:</b> Healeys<br clear=3D"none">
<b>Subject:</b> [Healeys] Valve clearances</span></p>
</div>
</div>
<p class=3D"m_1603937236670712738x_yiv1110160614MsoNormal">&nbsp;</p>
<p class=3D"m_1603937236670712738x_yiv1110160614MsoNormal"><span lang=3D"EN-=
GB">The car is a MkII BT7.</span></p>
<p class=3D"m_1603937236670712738x_yiv1110160614MsoNormal"><span lang=3D"EN-=
GB">The BMC manual says adjust the clearances, cold, to 0.012=E2=80=9D.</spa=
n></p>
<p class=3D"m_1603937236670712738x_yiv1110160614MsoNormal"><span lang=3D"EN-=
GB">Denis Welch said I should go 0.015=E2=80=9D, cold, after fitting their =E2=
=80=9CFast Road=E2=80=9D cam.</span></p>
<p class=3D"m_1603937236670712738x_yiv1110160614MsoNormal"><span lang=3D"EN-=
GB">The rolling road guy said 0.016=E2=80=9D, warm.</span></p>
<p class=3D"m_1603937236670712738x_yiv1110160614MsoNormal"><span lang=3D"EN-=
GB">&nbsp;</span></p>
<p class=3D"m_1603937236670712738x_yiv1110160614MsoNormal"><span lang=3D"EN-=
GB">I have the radiator out right now so I can get a nice socket onto that n=
ut and have a go at the clearances.</span></p>
<p class=3D"m_1603937236670712738x_yiv1110160614MsoNormal"><span lang=3D"EN-=
GB">Stick with 0.015=E2=80=9D, cold?</span></p>
<p class=3D"m_1603937236670712738x_yiv1110160614MsoNormal"><span lang=3D"EN-=
GB">&nbsp;</span></p>
<p class=3D"m_1603937236670712738x_yiv1110160614MsoNormal"><span lang=3D"EN-=
GB">Thanks,</span></p>
<p class=3D"m_1603937236670712738x_yiv1110160614MsoNormal"><span lang=3D"EN-=
GB">Simon</span></p>
</div>
<br>
</div>
</div>
</div>
</div>
</div>
</div>
<div id=3D"m_1603937236670712738x_DAB4FAD8-2DD7-40BB-A1B8-4E2AA1F9FDF2">
<table style=3D"border-top:1px solid #d3d4de">
<tbody>
<tr>
<td style=3D"width:55px;padding-top:13px"><br>
</td>
<td style=3D"width:470px;padding-top:12px;color:#41424e;font-size:13px;font-=
family:Arial,Helvetica,sans-serif;line-height:18px"><br></td></tr></tbody></=
table></div></blockquote></div></div></blockquote></div></div></blockquote><=
/body></html>=

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[email-masked]

--===============8769275744439483737==--

---

From: "BJ8Healeys" <[email-masked]>
Date: Sat, 16 Feb 2019 08:09:44 -0500

This is a multi-part message in MIME format.

--===============0653116151752444441==
	boundary="----=_NextPart_000_019A_01D4C5CE.FB2F6870"
Content-Language: en-us

This is a multi-part message in MIME format.

------=_NextPart_000_019A_01D4C5CE.FB2F6870
	charset="utf-8"
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Jim, I had my engine rebuilt in 1999 with hardened valves seats and =
stellite exhaust valves.  When installed, the engine ran just fine.  I =
never bothered to check or adjust the valve clearances.  In 2001, I =
ended up with a burned exhaust valve.  Since then, I have =
checked/adjusted the clearances once a year and no further valve =
problems.

Is that an "old wives tale", or did I have a bad valve out of the box?=20

=20

Steve Byers

HBJ8L/36666

BJ8 Registry

AHCA Delegate at Large

Havelock, NC =20

=20

=20

From: Healeys [mailto:[email-masked]] On Behalf Of =
[email-masked]
Sent: Tuesday, February 12, 2019 10:30 AM
To: [email-masked]; 'WILLIAM B LAWRENCE'
Cc: [email-masked]
Subject: Re: [Healeys] Valve clearances

=20

Mike,

=20

=20

Best regards,

Jim

=20

=20

Just wondering....

=20

M

=20

=20

=20

=20

Bill Lawrence

BN1 #554

  _____ =20

From: Healeys <[email-masked]> on behalf of Bob Spidell =
<[email-masked]>
Sent: Saturday, January 12, 2019 11:10 PM
To: Michael MacLean; [email-masked]
Subject: Re: [Healeys] Valve clearances=20

=20

Mike MacLean

=20

=20

=20

Bob

Simon,

John Rowe

Qld

Australia

=20

=20

The car is a MkII BT7.

=20

=20

Thanks,

Simon

=20

	=09

[email-masked]

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vlink=3Dpurple><div class=3DWordSection1><p class=3DMsoNormal><span =
style=3D'font-family:"Comic Sans MS";color:#002060'>Jim, I had my engine =
rebuilt in 1999 with hardened valves seats and stellite exhaust =
valves.=C2=A0 When installed, the engine ran just fine.=C2=A0 I never =
bothered to check or adjust the valve clearances.=C2=A0 In 2001, I ended =
up with a burned exhaust valve.=C2=A0 Since then, I have =
checked/adjusted the clearances once a year and no further valve =
problems.<o:p></o:p></span></p><p class=3DMsoNormal><span =
style=3D'font-family:"Comic Sans MS";color:#002060'>Is that an &quot;old =
wives tale&quot;, or did I have a bad valve out of the box? =
<o:p></o:p></span></p><p class=3DMsoNormal><span =
style=3D'font-family:"Comic Sans =
MS";color:#002060'><o:p>&nbsp;</o:p></span></p><div><p =
class=3DMsoNormal><span style=3D'font-family:"Comic Sans =
MS";color:#002060'>Steve Byers</span><span =
style=3D'color:#002060'><o:p></o:p></span></p><p class=3DMsoNormal><span =
style=3D'font-family:"Comic Sans =
MS";color:#002060'>HBJ8L/36666</span><span =
style=3D'color:#002060'><o:p></o:p></span></p><p class=3DMsoNormal><span =
style=3D'font-family:"Comic Sans MS";color:#002060'>BJ8 =
Registry</span><span style=3D'color:#002060'><o:p></o:p></span></p><p =
class=3DMsoNormal><span style=3D'font-family:"Comic Sans =
MS";color:#002060'>AHCA Delegate at Large</span><span =
style=3D'color:#002060'><o:p></o:p></span></p><p class=3DMsoNormal><span =
style=3D'font-family:"Comic Sans MS";color:#002060'>Havelock, NC&nbsp; =
</span><span style=3D'color:#002060'><o:p></o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'color:#002060'><o:p>&nbsp;</o:p></span></p></div><p =
class=3DMsoNormal><span style=3D'font-family:"Comic Sans =
MS";color:#002060'><o:p>&nbsp;</o:p></span></p><div><div =
style=3D'border:none;border-top:solid #B5C4DF 1.0pt;padding:3.0pt 0in =
0in 0in'><p class=3DMsoNormal><b><span =
style=3D'font-size:10.0pt;font-family:"Tahoma","sans-serif"'>From:</span>=
</b><span style=3D'font-size:10.0pt;font-family:"Tahoma","sans-serif"'> =
Healeys [mailto:[email-masked]] <b>On Behalf Of =
</b>[email-masked]<br><b>Sent:</b> Tuesday, February 12, 2019 10:30 =
AM<br><b>To:</b> [email-masked]; 'WILLIAM B =
LAWRENCE'<br><b>Cc:</b> [email-masked]<br><b>Subject:</b> Re: =
[Healeys] Valve clearances<o:p></o:p></span></p></div></div><p =
class=3DMsoNormal><o:p>&nbsp;</o:p></p><p =
class=3DMsoNormal>Mike,<o:p></o:p></p><p =
class=3DMsoNormal><o:p>&nbsp;</o:p></p><p class=3DMsoNormal>You are =
correct that the valve train components change very, very little.&nbsp; =
Expansion of components causing valves to not close is an old wives tale =
that gets repeated many times until shade tree mechanics turn it into =
gospel=E2=80=A6=E2=80=A6&nbsp; Burned valves are caused by other design, =
assembly or materials factors.<o:p></o:p></p><p =
class=3DMsoNormal><o:p>&nbsp;</o:p></p><p class=3DMsoNormal>Best =
regards,<o:p></o:p></p><p class=3DMsoNormal>Jim<o:p></o:p></p><p =
class=3DMsoNormal><o:p>&nbsp;</o:p></p><p class=3DMsoNormal><b>From:</b> =
Healeys &lt;[email-masked]&gt; <b>On Behalf Of =
</b>Michael Salter<br><b>Sent:</b> Sunday, January 13, 2019 5:23 =
PM<br><b>To:</b> WILLIAM B LAWRENCE =
&lt;[email-masked]&gt;<br><b>Cc:</b> =
[email-masked]<br><b>Subject:</b> Re: [Healeys] Valve =
clearances<o:p></o:p></p><p =
class=3DMsoNormal><o:p>&nbsp;</o:p></p><div><p class=3DMsoNormal>This is =
another subject that I often wonder about.&nbsp;<o:p></o:p></p><div><p =
class=3DMsoNormal>If the valve clearance is there to ensure that the =
valves are fully closed when the engine is hot then why, when I check =
the clearances on a hot engine after a dyno run,&nbsp; are they hardly =
any less than they were cold?<o:p></o:p></p></div><div><p =
class=3DMsoNormal>I can appreciate that the valve train components grow =
because of the heat but surely the block and head and rocker shaft =
pedistals also grow and thus there is little if any net =
change.<o:p></o:p></p></div><div><p class=3DMsoNormal>I also appreciate =
that the exhaust valve stem get really hot but =
????<o:p></o:p></p></div><div><p class=3DMsoNormal>Just =
wondering....<o:p></o:p></p></div><div><p =
class=3DMsoNormal><o:p>&nbsp;</o:p></p></div><div><p =
class=3DMsoNormal>M<o:p></o:p></p></div></div><p =
class=3DMsoNormal><o:p>&nbsp;</o:p></p><div><div><p class=3DMsoNormal>On =
Sun, Jan 13, 2019, 6:42 AM WILLIAM B LAWRENCE &lt;<a =
href=3D"mailto:[email-masked]">[email-masked]</a> =
wrote:<o:p></o:p></p></div><blockquote =
style=3D'border:none;border-left:solid #CCCCCC 1.0pt;padding:0in 0in 0in =
6.0pt;margin-left:4.8pt;margin-top:5.0pt;margin-right:0in;margin-bottom:5=
.0pt'><div><div><p class=3DMsoNormal><span =
style=3D'font-size:12.0pt;color:black'>I disagree that valve clearances =
are not critical. As the engine comes up to temperature the metal parts =
of the valve train (valves, lifters, push rods, the head itself and the =
rocker shaft towers) increase in length and the valve clearances are =
calculated to assure that this expansion isn't allowed to affect the =
sealing of the valves on their seats. If the valves are set too tight =
they reach a point where they won't touch the seats and therefore won't =
seal. Hot gases rushing through the gaps will quickly erode the valves. =
Also i<span style=3D'background:white'>ncreasing the duration and/or =
lift of the cam has the effect of the &nbsp;decreasing the length of the =
opening and closing ramps on the back side of the cam This reduces the =
length of time (dwell) the valve remains on the seat. Increasing the =
valve clearance restores the dwell time the valve needs to transfer its =
heat load to the cooling system through the valve seat and the cylinder =
head. Too little dwell time or the lack of proper valve sealing are two =
causes of burned valves.</span><o:p></o:p></span></p></div><div><p =
class=3DMsoNormal><span =
style=3D'font-size:12.0pt;color:black'><o:p>&nbsp;</o:p></span></p></div>=
<div><p class=3DMsoNormal><span =
style=3D'font-size:12.0pt;color:black'>In my own experience I installed =
an Isky cam with a grind a little more aggressive than the 100M cam and =
set the clearances to 0.012&quot; per the manual. Within about 2,000 =
miles the exhaust valves were trashed. I then took the time to read the =
Isky installation instructions which specifically state the valve =
clearance needs to be set to 0.018&quot;. I re-installed the head with =
new valves and set them to Isky's spec and never had another problem =
with burned valves.<o:p></o:p></span></p></div><div><p =
class=3DMsoNormal><span =
style=3D'font-size:12.0pt;color:black'><o:p>&nbsp;</o:p></span></p></div>=
<div><p class=3DMsoNormal><span =
style=3D'font-size:12.0pt;color:black'>Follow the cam grinder's =
recommendations and you will avoid =
trouble.<o:p></o:p></span></p></div><div><p class=3DMsoNormal><span =
style=3D'font-size:12.0pt;color:black'><o:p>&nbsp;</o:p></span></p></div>=
<div><p class=3DMsoNormal><span =
style=3D'font-size:12.0pt;color:black'>Bill =
Lawrence<o:p></o:p></span></p></div><div><p class=3DMsoNormal><span =
style=3D'font-size:12.0pt;color:black'>BN1 =
#554<o:p></o:p></span></p></div><div class=3DMsoNormal align=3Dcenter =
style=3D'text-align:center'><hr size=3D3 width=3D"98%" =
align=3Dcenter></div><div id=3D"m_1603937236670712738divRplyFwdMsg"><p =
class=3DMsoNormal><b><span style=3D'color:black'>From:</span></b><span =
style=3D'color:black'> Healeys &lt;<a =
href=3D"mailto:[email-masked]" =
target=3D"_blank">[email-masked]</a>&gt; on behalf of =
Bob Spidell &lt;<a href=3D"mailto:[email-masked]" =
target=3D"_blank">[email-masked]</a>&gt;<br><b>Sent:</b> Saturday, =
January 12, 2019 11:10 PM<br><b>To:</b> Michael MacLean; <a =
href=3D"mailto:[email-masked]" =
target=3D"_blank">[email-masked]</a><br><b>Subject:</b> Re: =
[Healeys] Valve clearances</span> <o:p></o:p></p><div><p =
class=3DMsoNormal>&nbsp;<o:p></o:p></p></div></div><div><p =
style=3D'background:white'>I should note the rockers are pretty noisy at =
0.015; IIRC I tightened them up just a bit.<o:p></o:p></p><div><p =
class=3DMsoNormal style=3D'background:white'>On 1/12/2019 2:39 PM, =
Michael MacLean wrote:<o:p></o:p></p></div><blockquote =
style=3D'margin-top:5.0pt;margin-bottom:5.0pt'><div><div><p =
class=3DMsoNormal style=3D'background:white'><span =
style=3D'font-size:12.0pt;font-family:"Times New Roman","serif"'>I'd go =
with .016.&nbsp; You can always tighten it.&nbsp; Better loose than =
tight.<o:p></o:p></span></p></div><div><p class=3DMsoNormal =
style=3D'background:white'><span =
style=3D'font-size:12.0pt;font-family:"Times New Roman","serif"'>Mike =
MacLean<o:p></o:p></span></p></div><div><p class=3DMsoNormal =
style=3D'background:white'><span =
style=3D'font-size:12.0pt;font-family:"Times New =
Roman","serif"'><o:p>&nbsp;</o:p></span></p></div></div><div =
id=3D"m_1603937236670712738x_yahoo_quoted_8268064185"><div><div><p =
class=3DMsoNormal style=3D'background:white'><span =
style=3D'font-size:10.0pt;font-family:"Helvetica","sans-serif";color:#262=
82A'>On Saturday, January 12, 2019, 11:01:32 AM PST, Bob Spidell <a =
href=3D"mailto:[email-masked]" =
target=3D"_blank">&lt;[email-masked]&gt;</a> wrote: =
<o:p></o:p></span></p></div><div><p class=3DMsoNormal =
style=3D'background:white'><span =
style=3D'font-size:10.0pt;font-family:"Helvetica","sans-serif";color:#262=
82A'><o:p>&nbsp;</o:p></span></p></div><div><p class=3DMsoNormal =
style=3D'background:white'><span =
style=3D'font-size:10.0pt;font-family:"Helvetica","sans-serif";color:#262=
82A'><o:p>&nbsp;</o:p></span></p></div><div><div =
id=3D"m_1603937236670712738x_yiv1110160614"><div><p =
style=3D'background:white'><span =
style=3D'font-size:10.0pt;font-family:"Helvetica","sans-serif";color:#262=
82A'>Makes sense (for some reason).&nbsp; I put a DWR1 cam in my BJ8 =
which, according to DWR, 'is a little better than the BJ8 cam and so =
works well in any standard or mildly tuned car' but I think the =
0.015&quot; applies to all profiles on the spec =
sheet.<o:p></o:p></span></p><p style=3D'background:white'><span =
style=3D'font-size:10.0pt;font-family:"Helvetica","sans-serif";color:#262=
82A'>Bob<o:p></o:p></span></p><div =
id=3D"m_1603937236670712738x_yiv1110160614yqt70378"><div><p =
class=3DMsoNormal style=3D'background:white'><span =
style=3D'font-size:10.0pt;font-family:"Helvetica","sans-serif";color:#262=
82A'>On 1/11/2019 8:48 PM, John Rowe =
wrote:<o:p></o:p></span></p></div></div></div><div =
id=3D"m_1603937236670712738x_yiv1110160614yqt92654"><div><div><p =
class=3Dm1603937236670712738xyiv1110160614msonormal =
style=3D'background:white'><span =
style=3D'font-size:10.0pt;font-family:"Helvetica","sans-serif";color:#1F4=
97D'>Simon,</span><span =
style=3D'font-size:10.0pt;font-family:"Helvetica","sans-serif";color:#262=
82A'><o:p></o:p></span></p><p =
class=3Dm1603937236670712738xyiv1110160614msonormal =
style=3D'background:white'><span =
style=3D'font-size:10.0pt;font-family:"Helvetica","sans-serif";color:#1F4=
97D'>Modified cams require the large clearance (don=E2=80=99t ask me =
why?) So go for .015 that is what mine is.</span><span =
style=3D'font-size:10.0pt;font-family:"Helvetica","sans-serif";color:#262=
82A'><o:p></o:p></span></p><p =
class=3Dm1603937236670712738xyiv1110160614msonormal =
style=3D'background:white'><span =
style=3D'font-size:10.0pt;font-family:"Helvetica","sans-serif";color:#1F4=
97D'>John Rowe</span><span =
style=3D'font-size:10.0pt;font-family:"Helvetica","sans-serif";color:#262=
82A'><o:p></o:p></span></p><p =
class=3Dm1603937236670712738xyiv1110160614msonormal =
style=3D'background:white'><span =
style=3D'font-size:10.0pt;font-family:"Helvetica","sans-serif";color:#1F4=
97D'>Qld</span><span =
style=3D'font-size:10.0pt;font-family:"Helvetica","sans-serif";color:#262=
82A'><o:p></o:p></span></p><p =
class=3Dm1603937236670712738xyiv1110160614msonormal =
style=3D'background:white'><span =
style=3D'font-size:10.0pt;font-family:"Helvetica","sans-serif";color:#1F4=
97D'>Australia</span><span =
style=3D'font-size:10.0pt;font-family:"Helvetica","sans-serif";color:#262=
82A'><o:p></o:p></span></p><p =
class=3Dm1603937236670712738xyiv1110160614msonormal =
style=3D'background:white'><span =
style=3D'font-size:10.0pt;font-family:"Helvetica","sans-serif";color:#1F4=
97D'>&nbsp;</span><span =
style=3D'font-size:10.0pt;font-family:"Helvetica","sans-serif";color:#262=
82A'><o:p></o:p></span></p><div><div =
style=3D'border:none;border-top:solid #B5C4DF 1.0pt;padding:3.0pt 0in =
0in 0in'><p class=3Dm1603937236670712738xyiv1110160614msonormal =
style=3D'background:white'><b><span =
style=3D'font-size:10.0pt;font-family:"Helvetica","sans-serif";color:#262=
82A'>From:</span></b><span =
style=3D'font-size:10.0pt;font-family:"Helvetica","sans-serif";color:#262=
82A'> Healeys [<a href=3D"mailto:[email-masked]" =
target=3D"_blank">mailto:[email-masked]</a>] <b>On =
Behalf Of </b><a href=3D"mailto:[email-masked]" =
target=3D"_blank">[email-masked]</a><br><b>Sent:</b> =
Saturday, 12 January 2019 9:14 AM<br><b>To:</b> =
Healeys<br><b>Subject:</b> [Healeys] Valve =
clearances<o:p></o:p></span></p></div></div><p =
class=3Dm1603937236670712738xyiv1110160614msonormal =
style=3D'background:white'><span =
style=3D'font-size:10.0pt;font-family:"Helvetica","sans-serif";color:#262=
82A'>&nbsp;<o:p></o:p></span></p><p =
class=3Dm1603937236670712738xyiv1110160614msonormal =
style=3D'background:white'><span lang=3DEN-GB =
style=3D'font-size:10.0pt;font-family:"Helvetica","sans-serif";color:#262=
82A'>The car is a MkII BT7.</span><span =
style=3D'font-size:10.0pt;font-family:"Helvetica","sans-serif";color:#262=
82A'><o:p></o:p></span></p><p =
class=3Dm1603937236670712738xyiv1110160614msonormal =
style=3D'background:white'><span lang=3DEN-GB =
style=3D'font-size:10.0pt;font-family:"Helvetica","sans-serif";color:#262=
82A'>The BMC manual says adjust the clearances, cold, to =
0.012=E2=80=9D.</span><span =
style=3D'font-size:10.0pt;font-family:"Helvetica","sans-serif";color:#262=
82A'><o:p></o:p></span></p><p =
class=3Dm1603937236670712738xyiv1110160614msonormal =
style=3D'background:white'><span lang=3DEN-GB =
style=3D'font-size:10.0pt;font-family:"Helvetica","sans-serif";color:#262=
82A'>Denis Welch said I should go 0.015=E2=80=9D, cold, after fitting =
their =E2=80=9CFast Road=E2=80=9D cam.</span><span =
style=3D'font-size:10.0pt;font-family:"Helvetica","sans-serif";color:#262=
82A'><o:p></o:p></span></p><p =
class=3Dm1603937236670712738xyiv1110160614msonormal =
style=3D'background:white'><span lang=3DEN-GB =
style=3D'font-size:10.0pt;font-family:"Helvetica","sans-serif";color:#262=
82A'>The rolling road guy said 0.016=E2=80=9D, warm.</span><span =
style=3D'font-size:10.0pt;font-family:"Helvetica","sans-serif";color:#262=
82A'><o:p></o:p></span></p><p =
class=3Dm1603937236670712738xyiv1110160614msonormal =
style=3D'background:white'><span lang=3DEN-GB =
style=3D'font-size:10.0pt;font-family:"Helvetica","sans-serif";color:#262=
82A'>&nbsp;</span><span =
style=3D'font-size:10.0pt;font-family:"Helvetica","sans-serif";color:#262=
82A'><o:p></o:p></span></p><p =
class=3Dm1603937236670712738xyiv1110160614msonormal =
style=3D'background:white'><span lang=3DEN-GB =
style=3D'font-size:10.0pt;font-family:"Helvetica","sans-serif";color:#262=
82A'>I have the radiator out right now so I can get a nice socket onto =
that nut and have a go at the clearances.</span><span =
style=3D'font-size:10.0pt;font-family:"Helvetica","sans-serif";color:#262=
82A'><o:p></o:p></span></p><p =
class=3Dm1603937236670712738xyiv1110160614msonormal =
style=3D'background:white'><span lang=3DEN-GB =
style=3D'font-size:10.0pt;font-family:"Helvetica","sans-serif";color:#262=
82A'>Stick with 0.015=E2=80=9D, cold?</span><span =
style=3D'font-size:10.0pt;font-family:"Helvetica","sans-serif";color:#262=
82A'><o:p></o:p></span></p><p =
class=3Dm1603937236670712738xyiv1110160614msonormal =
style=3D'background:white'><span lang=3DEN-GB =
style=3D'font-size:10.0pt;font-family:"Helvetica","sans-serif";color:#262=
82A'>&nbsp;</span><span =
style=3D'font-size:10.0pt;font-family:"Helvetica","sans-serif";color:#262=
82A'><o:p></o:p></span></p><p =
class=3Dm1603937236670712738xyiv1110160614msonormal =
style=3D'background:white'><span lang=3DEN-GB =
style=3D'font-size:10.0pt;font-family:"Helvetica","sans-serif";color:#262=
82A'>Thanks,</span><span =
style=3D'font-size:10.0pt;font-family:"Helvetica","sans-serif";color:#262=
82A'><o:p></o:p></span></p><p =
class=3Dm1603937236670712738xyiv1110160614msonormal =
style=3D'background:white'><span lang=3DEN-GB =
style=3D'font-size:10.0pt;font-family:"Helvetica","sans-serif";color:#262=
82A'>Simon</span><span =
style=3D'font-size:10.0pt;font-family:"Helvetica","sans-serif";color:#262=
82A'><o:p></o:p></span></p></div><p class=3DMsoNormal =
style=3D'background:white'><span =
style=3D'font-size:10.0pt;font-family:"Helvetica","sans-serif";color:#262=
82A'><o:p>&nbsp;</o:p></span></p></div></div></div></div></div></div><div=
 =
id=3D"m_1603937236670712738x_DAB4FAD8-2DD7-40BB-A1B8-4E2AA1F9FDF2"><table=
 class=3DMsoNormalTable border=3D1 cellspacing=3D3 cellpadding=3D0 =
style=3D'border:none;border-top:solid #D3D4DE 1.0pt'><tr><td width=3D55 =
style=3D'width:41.25pt;border:none;padding:9.75pt .75pt .75pt =
.75pt'></td><td width=3D470 =
style=3D'width:352.5pt;border:none;padding:9.0pt .75pt .75pt =
.75pt'></td></tr></table></div></blockquote></div></div><p =
class=3DMsoNormal =
style=3D'margin-bottom:12.0pt'>__________________________________________=
_____<br>Support Team.Net <a href=3D"http://www.team.net/donate.html" =
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From: Kees Oudesluijs <[email-masked]>
Date: Sat, 16 Feb 2019 15:21:12 +0100

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Check the valve clearances at least every 10.000km/6000mls. Easy job. Do 
it yourself and do not trust a mechanic doing it properly, he might or 
he might not. To many cars suffer a burned valve after a major service!!!

Kees Oudesluijs

Op 16-2-2019 om 14:09 schreef BJ8Healeys:
>
> Jim, I had my engine rebuilt in 1999 with hardened valves seats and 
> stellite exhaust valves. When installed, the engine ran just fine.  I 
> never bothered to check or adjust the valve clearances.  In 2001, I 
> ended up with a burned exhaust valve.  Since then, I have 
> checked/adjusted the clearances once a year and no further valve problems.
>
> Is that an "old wives tale", or did I have a bad valve out of the box?
>
> Steve Byers
>
> HBJ8L/36666
>
> BJ8 Registry
>
> AHCA Delegate at Large
>
> Havelock, NC
>
> *From:*Healeys [mailto:[email-masked]] *On Behalf Of 
> [email-masked]
> *Sent:* Tuesday, February 12, 2019 10:30 AM
> *To:* [email-masked]; 'WILLIAM B LAWRENCE'
> *Cc:* [email-masked]
> You are correct that the valve train components change very, very 
> little.  Expansion of components causing valves to not close is an old 
> wives tale that gets repeated many times until shade tree mechanics 
> turn it into gospel……  Burned valves are caused by other design, 
> assembly or materials factors.
>
> Best regards,
>
> Jim
>
> *From:* Healeys <[email-masked]> *On Behalf Of 
> *Michael Salter
> *Sent:* Sunday, January 13, 2019 5:23 PM
> *To:* WILLIAM B LAWRENCE <[email-masked]>
> *Cc:* [email-masked]
> If the valve clearance is there to ensure that the valves are fully 
> closed when the engine is hot then why, when I check the clearances on 
> a hot engine after a dyno run,  are they hardly any less than they 
> were cold?
>
> I can appreciate that the valve train components grow because of the 
> heat but surely the block and head and rocker shaft pedistals also 
> grow and thus there is little if any net change.
>
> On Sun, Jan 13, 2019, 6:42 AM WILLIAM B LAWRENCE <[email-masked] 
>
>     I disagree that valve clearances are not critical. As the engine
>     comes up to temperature the metal parts of the valve train
>     (valves, lifters, push rods, the head itself and the rocker shaft
>     towers) increase in length and the valve clearances are calculated
>     to assure that this expansion isn't allowed to affect the sealing
>     of the valves on their seats. If the valves are set too tight they
>     reach a point where they won't touch the seats and therefore won't
>     seal. Hot gases rushing through the gaps will quickly erode the
>     valves. Also increasing the duration and/or lift of the cam has
>     the effect of the  decreasing the length of the opening and
>     closing ramps on the back side of the cam This reduces the length
>     of time (dwell) the valve remains on the seat. Increasing the
>     valve clearance restores the dwell time the valve needs to
>     transfer its heat load to the cooling system through the valve
>     seat and the cylinder head. Too little dwell time or the lack of
>     In my own experience I installed an Isky cam with a grind a little
>     more aggressive than the 100M cam and set the clearances to 0.012"
>     per the manual. Within about 2,000 miles the exhaust valves were
>     trashed. I then took the time to read the Isky installation
>     instructions which specifically state the valve clearance needs to
>     be set to 0.018". I re-installed the head with new valves and set
>     them to Isky's spec and never had another problem with burned valves.
>
>     ------------------------------------------------------------------------
>
>     *From:*Healeys <[email-masked]
>     I should note the rockers are pretty noisy at 0.015; IIRC I
>     tightened them up just a bit.
>
>         Makes sense (for some reason).  I put a DWR1 cam in my BJ8
>         which, according to DWR, 'is a little better than the BJ8 cam
>         and so works well in any standard or mildly tuned car' but I
>         think the 0.015" applies to all profiles on the spec sheet.
>
>         Bob
>
>         Modified cams require the large clearance (don’t ask me why?)
>         So go for .015 that is what mine is.
>
>         John Rowe
>
>         Qld
>
>         Australia
>
>         *From:*Healeys [mailto:[email-masked]] *On
>         Behalf Of [email-masked]
>         The BMC manual says adjust the clearances, cold, to 0.012”.
>
>         Denis Welch said I should go 0.015”, cold, after fitting their
>         “Fast Road” cam.
>
>         The rolling road guy said 0.016”, warm.
>
>         I have the radiator out right now so I can get a nice socket
>         onto that nut and have a go at the clearances.
>
>         Stick with 0.015”, cold?
>
>         Thanks,
>
>         Simon
>
>
>         	
>
> Unsubscribe/Manage: http://autox.team.net/mailman/options/healeys/[email-masked]
>

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    <p>Check the valve clearances at least every 10.000km/6000mls. Easy
      job. Do it yourself and do not trust a mechanic doing it properly,
      he might or he might not. To many cars suffer a burned valve after
      a major service!!!<br>
    </p>
    <p>Kees Oudesluijs</p>
    <p><br>
    </p>
    <p><br>
    </p>
    <div class="moz-cite-prefix">Op 16-2-2019 om 14:09 schreef
      BJ8Healeys:<br>
    </div>
    <blockquote type="cite"
      cite="mid:[email-masked]">
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      <div class="WordSection1">
        <p class="MsoNormal"><span style="font-family:&quot;Comic Sans
            MS&quot;;color:#002060">Jim, I had my engine rebuilt in 1999
            with hardened valves seats and stellite exhaust valves. 
            When installed, the engine ran just fine.  I never bothered
            to check or adjust the valve clearances.  In 2001, I ended
            up with a burned exhaust valve.  Since then, I have
            checked/adjusted the clearances once a year and no further
            valve problems.<o:p></o:p></span></p>
        <p class="MsoNormal"><span style="font-family:&quot;Comic Sans
            MS&quot;;color:#002060">Is that an "old wives tale", or did
            I have a bad valve out of the box? <o:p></o:p></span></p>
        <p class="MsoNormal"><span style="font-family:&quot;Comic Sans
            MS&quot;;color:#002060"><o:p> </o:p></span></p>
        <div>
          <p class="MsoNormal"><span style="font-family:&quot;Comic Sans
              MS&quot;;color:#002060">Steve Byers</span><span
              style="color:#002060"><o:p></o:p></span></p>
          <p class="MsoNormal"><span style="font-family:&quot;Comic Sans
              MS&quot;;color:#002060">HBJ8L/36666</span><span
              style="color:#002060"><o:p></o:p></span></p>
          <p class="MsoNormal"><span style="font-family:&quot;Comic Sans
              MS&quot;;color:#002060">BJ8 Registry</span><span
              style="color:#002060"><o:p></o:p></span></p>
          <p class="MsoNormal"><span style="font-family:&quot;Comic Sans
              MS&quot;;color:#002060">AHCA Delegate at Large</span><span
              style="color:#002060"><o:p></o:p></span></p>
          <p class="MsoNormal"><span style="font-family:&quot;Comic Sans
              MS&quot;;color:#002060">Havelock, NC  </span><span
              style="color:#002060"><o:p></o:p></span></p>
          <p class="MsoNormal"><span style="color:#002060"><o:p> </o:p></span></p>
        </div>
        <p class="MsoNormal"><span style="font-family:&quot;Comic Sans
            MS&quot;;color:#002060"><o:p> </o:p></span></p>
        <div>
          <div style="border:none;border-top:solid #B5C4DF
            1.0pt;padding:3.0pt 0in 0in 0in">
            <p class="MsoNormal"><b><span
style="font-size:10.0pt;font-family:&quot;Tahoma&quot;,&quot;sans-serif&quot;">From:</span></b><span
style="font-size:10.0pt;font-family:&quot;Tahoma&quot;,&quot;sans-serif&quot;">
                Healeys [<a class="moz-txt-link-freetext" href="mailto:[email-masked]">mailto:[email-masked]</a>] <b>On
                  Behalf Of </b><a class="moz-txt-link-abbreviated" href="mailto:[email-masked]">[email-masked]</a><br>
                <b>Sent:</b> Tuesday, February 12, 2019 10:30 AM<br>
                <b>To:</b> <a class="moz-txt-link-abbreviated" href="mailto:[email-masked]">[email-masked]</a>; 'WILLIAM B LAWRENCE'<br>
                <b>Cc:</b> <a class="moz-txt-link-abbreviated" href="mailto:[email-masked]">[email-masked]</a><br>
                <b>Subject:</b> Re: [Healeys] Valve clearances<o:p></o:p></span></p>
          </div>
        </div>
        <p class="MsoNormal"><o:p> </o:p></p>
        <p class="MsoNormal">Mike,<o:p></o:p></p>
        <p class="MsoNormal"><o:p> </o:p></p>
        <p class="MsoNormal">You are correct that the valve train
          components change very, very little.  Expansion of components
          causing valves to not close is an old wives tale that gets
          repeated many times until shade tree mechanics turn it into
          gospel……  Burned valves are caused by other design, assembly
          or materials factors.<o:p></o:p></p>
        <p class="MsoNormal"><o:p> </o:p></p>
        <p class="MsoNormal">Best regards,<o:p></o:p></p>
        <p class="MsoNormal">Jim<o:p></o:p></p>
        <p class="MsoNormal"><o:p> </o:p></p>
        <p class="MsoNormal"><b>From:</b> Healeys
          <a class="moz-txt-link-rfc2396E" href="mailto:[email-masked]">&lt;[email-masked]&gt;</a> <b>On Behalf Of </b>Michael
          Salter<br>
          <b>Sent:</b> Sunday, January 13, 2019 5:23 PM<br>
          <b>To:</b> WILLIAM B LAWRENCE <a class="moz-txt-link-rfc2396E" href="mailto:[email-masked]">&lt;[email-masked]&gt;</a><br>
          <b>Cc:</b> <a class="moz-txt-link-abbreviated" href="mailto:[email-masked]">[email-masked]</a><br>
          <b>Subject:</b> Re: [Healeys] Valve clearances<o:p></o:p></p>
        <p class="MsoNormal"><o:p> </o:p></p>
        <div>
          <p class="MsoNormal">This is another subject that I often
            wonder about. <o:p></o:p></p>
          <div>
            <p class="MsoNormal">If the valve clearance is there to
              ensure that the valves are fully closed when the engine is
              hot then why, when I check the clearances on a hot engine
              after a dyno run,  are they hardly any less than they were
              cold?<o:p></o:p></p>
          </div>
          <div>
            <p class="MsoNormal">I can appreciate that the valve train
              components grow because of the heat but surely the block
              and head and rocker shaft pedistals also grow and thus
              there is little if any net change.<o:p></o:p></p>
          </div>
          <div>
            <p class="MsoNormal">I also appreciate that the exhaust
              valve stem get really hot but ????<o:p></o:p></p>
          </div>
          <div>
            <p class="MsoNormal">Just wondering....<o:p></o:p></p>
          </div>
          <div>
            <p class="MsoNormal"><o:p> </o:p></p>
          </div>
          <div>
            <p class="MsoNormal">M<o:p></o:p></p>
          </div>
        </div>
        <p class="MsoNormal"><o:p> </o:p></p>
        <div>
          <div>
            <p class="MsoNormal">On Sun, Jan 13, 2019, 6:42 AM WILLIAM B
              LAWRENCE &lt;<a href="mailto:[email-masked]"
                moz-do-not-send="true">[email-masked]</a> wrote:<o:p></o:p></p>
          </div>
          <blockquote style="border:none;border-left:solid #CCCCCC
            1.0pt;padding:0in 0in 0in
6.0pt;margin-left:4.8pt;margin-top:5.0pt;margin-right:0in;margin-bottom:5.0pt">
            <div>
              <div>
                <p class="MsoNormal"><span
                    style="font-size:12.0pt;color:black">I disagree that
                    valve clearances are not critical. As the engine
                    comes up to temperature the metal parts of the valve
                    train (valves, lifters, push rods, the head itself
                    and the rocker shaft towers) increase in length and
                    the valve clearances are calculated to assure that
                    this expansion isn't allowed to affect the sealing
                    of the valves on their seats. If the valves are set
                    too tight they reach a point where they won't touch
                    the seats and therefore won't seal. Hot gases
                    rushing through the gaps will quickly erode the
                    valves. Also i<span style="background:white">ncreasing
                      the duration and/or lift of the cam has the effect
                      of the  decreasing the length of the opening and
                      closing ramps on the back side of the cam This
                      reduces the length of time (dwell) the valve
                      remains on the seat. Increasing the valve
                      clearance restores the dwell time the valve needs
                      to transfer its heat load to the cooling system
                      through the valve seat and the cylinder head. Too
                      little dwell time or the lack of proper valve
                      sealing are two causes of burned valves.</span><o:p></o:p></span></p>
              </div>
              <div>
                <p class="MsoNormal"><span
                    style="font-size:12.0pt;color:black"><o:p> </o:p></span></p>
              </div>
              <div>
                <p class="MsoNormal"><span
                    style="font-size:12.0pt;color:black">In my own
                    experience I installed an Isky cam with a grind a
                    little more aggressive than the 100M cam and set the
                    clearances to 0.012" per the manual. Within about
                    2,000 miles the exhaust valves were trashed. I then
                    took the time to read the Isky installation
                    instructions which specifically state the valve
                    clearance needs to be set to 0.018". I re-installed
                    the head with new valves and set them to Isky's spec
                    and never had another problem with burned valves.<o:p></o:p></span></p>
              </div>
              <div>
                <p class="MsoNormal"><span
                    style="font-size:12.0pt;color:black"><o:p> </o:p></span></p>
              </div>
              <div>
                <p class="MsoNormal"><span
                    style="font-size:12.0pt;color:black">Follow the cam
                    grinder's recommendations and you will avoid
                    trouble.<o:p></o:p></span></p>
              </div>
              <div>
                <p class="MsoNormal"><span
                    style="font-size:12.0pt;color:black"><o:p> </o:p></span></p>
              </div>
              <div>
                <p class="MsoNormal"><span
                    style="font-size:12.0pt;color:black">Bill Lawrence<o:p></o:p></span></p>
              </div>
              <div>
                <p class="MsoNormal"><span
                    style="font-size:12.0pt;color:black">BN1 #554<o:p></o:p></span></p>
              </div>
              <div class="MsoNormal" style="text-align:center"
                align="center">
                <hr width="98%" size="3" align="center"></div>
              <div id="m_1603937236670712738divRplyFwdMsg">
                <p class="MsoNormal"><b><span style="color:black">From:</span></b><span
                    style="color:black"> Healeys &lt;<a
                      href="mailto:[email-masked]"
                      target="_blank" moz-do-not-send="true">[email-masked]</a>&gt;
                    on behalf of Bob Spidell &lt;<a
                      href="mailto:[email-masked]" target="_blank"
                      moz-do-not-send="true">[email-masked]</a>&gt;<br>
                    <b>Sent:</b> Saturday, January 12, 2019 11:10 PM<br>
                    <b>To:</b> Michael MacLean; <a
                      href="mailto:[email-masked]"
                      target="_blank" moz-do-not-send="true">[email-masked]</a><br>
                    <b>Subject:</b> Re: [Healeys] Valve clearances</span>
                  <o:p></o:p></p>
                <div>
                  <p class="MsoNormal"> <o:p></o:p></p>
                </div>
              </div>
              <div>
                <p style="background:white">I should note the rockers
                  are pretty noisy at 0.015; IIRC I tightened them up
                  just a bit.<o:p></o:p></p>
                <div>
                  <p class="MsoNormal" style="background:white">On
                    1/12/2019 2:39 PM, Michael MacLean wrote:<o:p></o:p></p>
                </div>
                <blockquote style="margin-top:5.0pt;margin-bottom:5.0pt">
                  <div>
                    <div>
                      <p class="MsoNormal" style="background:white"><span
style="font-size:12.0pt;font-family:&quot;Times New
                          Roman&quot;,&quot;serif&quot;">I'd go with
                          .016.  You can always tighten it.  Better
                          loose than tight.<o:p></o:p></span></p>
                    </div>
                    <div>
                      <p class="MsoNormal" style="background:white"><span
style="font-size:12.0pt;font-family:&quot;Times New
                          Roman&quot;,&quot;serif&quot;">Mike MacLean<o:p></o:p></span></p>
                    </div>
                    <div>
                      <p class="MsoNormal" style="background:white"><span
style="font-size:12.0pt;font-family:&quot;Times New
                          Roman&quot;,&quot;serif&quot;"><o:p> </o:p></span></p>
                    </div>
                  </div>
                  <div
                    id="m_1603937236670712738x_yahoo_quoted_8268064185">
                    <div>
                      <div>
                        <p class="MsoNormal" style="background:white"><span
style="font-size:10.0pt;font-family:&quot;Helvetica&quot;,&quot;sans-serif&quot;;color:#26282A">On
                            Saturday, January 12, 2019, 11:01:32 AM PST,
                            Bob Spidell <a
                              href="mailto:[email-masked]"
                              target="_blank" moz-do-not-send="true">&lt;[email-masked]&gt;</a>
                            wrote: <o:p></o:p></span></p>
                      </div>
                      <div>
                        <p class="MsoNormal" style="background:white"><span
style="font-size:10.0pt;font-family:&quot;Helvetica&quot;,&quot;sans-serif&quot;;color:#26282A"><o:p> </o:p></span></p>
                      </div>
                      <div>
                        <p class="MsoNormal" style="background:white"><span
style="font-size:10.0pt;font-family:&quot;Helvetica&quot;,&quot;sans-serif&quot;;color:#26282A"><o:p> </o:p></span></p>
                      </div>
                      <div>
                        <div id="m_1603937236670712738x_yiv1110160614">
                          <div>
                            <p style="background:white"><span
style="font-size:10.0pt;font-family:&quot;Helvetica&quot;,&quot;sans-serif&quot;;color:#26282A">Makes
                                sense (for some reason).  I put a DWR1
                                cam in my BJ8 which, according to DWR,
                                'is a little better than the BJ8 cam and
                                so works well in any standard or mildly
                                tuned car' but I think the 0.015"
                                applies to all profiles on the spec
                                sheet.<o:p></o:p></span></p>
                            <p style="background:white"><span
style="font-size:10.0pt;font-family:&quot;Helvetica&quot;,&quot;sans-serif&quot;;color:#26282A">Bob<o:p></o:p></span></p>
                            <div
                              id="m_1603937236670712738x_yiv1110160614yqt70378">
                              <div>
                                <p class="MsoNormal"
                                  style="background:white"><span
style="font-size:10.0pt;font-family:&quot;Helvetica&quot;,&quot;sans-serif&quot;;color:#26282A">On
                                    1/11/2019 8:48 PM, John Rowe wrote:<o:p></o:p></span></p>
                              </div>
                            </div>
                          </div>
                          <div
                            id="m_1603937236670712738x_yiv1110160614yqt92654">
                            <div>
                              <div>
                                <p
                                  class="m1603937236670712738xyiv1110160614msonormal"
                                  style="background:white"><span
style="font-size:10.0pt;font-family:&quot;Helvetica&quot;,&quot;sans-serif&quot;;color:#1F497D">Simon,</span><span
style="font-size:10.0pt;font-family:&quot;Helvetica&quot;,&quot;sans-serif&quot;;color:#26282A"><o:p></o:p></span></p>
                                <p
                                  class="m1603937236670712738xyiv1110160614msonormal"
                                  style="background:white"><span
style="font-size:10.0pt;font-family:&quot;Helvetica&quot;,&quot;sans-serif&quot;;color:#1F497D">Modified
                                    cams require the large clearance
                                    (don’t ask me why?) So go for .015
                                    that is what mine is.</span><span
style="font-size:10.0pt;font-family:&quot;Helvetica&quot;,&quot;sans-serif&quot;;color:#26282A"><o:p></o:p></span></p>
                                <p
                                  class="m1603937236670712738xyiv1110160614msonormal"
                                  style="background:white"><span
style="font-size:10.0pt;font-family:&quot;Helvetica&quot;,&quot;sans-serif&quot;;color:#1F497D">John
                                    Rowe</span><span
style="font-size:10.0pt;font-family:&quot;Helvetica&quot;,&quot;sans-serif&quot;;color:#26282A"><o:p></o:p></span></p>
                                <p
                                  class="m1603937236670712738xyiv1110160614msonormal"
                                  style="background:white"><span
style="font-size:10.0pt;font-family:&quot;Helvetica&quot;,&quot;sans-serif&quot;;color:#1F497D">Qld</span><span
style="font-size:10.0pt;font-family:&quot;Helvetica&quot;,&quot;sans-serif&quot;;color:#26282A"><o:p></o:p></span></p>
                                <p
                                  class="m1603937236670712738xyiv1110160614msonormal"
                                  style="background:white"><span
style="font-size:10.0pt;font-family:&quot;Helvetica&quot;,&quot;sans-serif&quot;;color:#1F497D">Australia</span><span
style="font-size:10.0pt;font-family:&quot;Helvetica&quot;,&quot;sans-serif&quot;;color:#26282A"><o:p></o:p></span></p>
                                <p
                                  class="m1603937236670712738xyiv1110160614msonormal"
                                  style="background:white"><span
style="font-size:10.0pt;font-family:&quot;Helvetica&quot;,&quot;sans-serif&quot;;color:#1F497D"> </span><span
style="font-size:10.0pt;font-family:&quot;Helvetica&quot;,&quot;sans-serif&quot;;color:#26282A"><o:p></o:p></span></p>
                                <div>
                                  <div
                                    style="border:none;border-top:solid
                                    #B5C4DF 1.0pt;padding:3.0pt 0in 0in
                                    0in">
                                    <p
                                      class="m1603937236670712738xyiv1110160614msonormal"
                                      style="background:white"><b><span
style="font-size:10.0pt;font-family:&quot;Helvetica&quot;,&quot;sans-serif&quot;;color:#26282A">From:</span></b><span
style="font-size:10.0pt;font-family:&quot;Helvetica&quot;,&quot;sans-serif&quot;;color:#26282A">
                                        Healeys [<a
                                          href="mailto:[email-masked]"
                                          target="_blank"
                                          moz-do-not-send="true">mailto:[email-masked]</a>]
                                        <b>On Behalf Of </b><a
                                          href="mailto:[email-masked]"
                                          target="_blank"
                                          moz-do-not-send="true">[email-masked]</a><br>
                                        <b>Sent:</b> Saturday, 12
                                        January 2019 9:14 AM<br>
                                        <b>To:</b> Healeys<br>
                                        <b>Subject:</b> [Healeys] Valve
                                        clearances<o:p></o:p></span></p>
                                  </div>
                                </div>
                                <p
                                  class="m1603937236670712738xyiv1110160614msonormal"
                                  style="background:white"><span
style="font-size:10.0pt;font-family:&quot;Helvetica&quot;,&quot;sans-serif&quot;;color:#26282A"> <o:p></o:p></span></p>
                                <p
                                  class="m1603937236670712738xyiv1110160614msonormal"
                                  style="background:white"><span
style="font-size:10.0pt;font-family:&quot;Helvetica&quot;,&quot;sans-serif&quot;;color:#26282A"
                                    lang="EN-GB">The car is a MkII BT7.</span><span
style="font-size:10.0pt;font-family:&quot;Helvetica&quot;,&quot;sans-serif&quot;;color:#26282A"><o:p></o:p></span></p>
                                <p
                                  class="m1603937236670712738xyiv1110160614msonormal"
                                  style="background:white"><span
style="font-size:10.0pt;font-family:&quot;Helvetica&quot;,&quot;sans-serif&quot;;color:#26282A"
                                    lang="EN-GB">The BMC manual says
                                    adjust the clearances, cold, to
                                    0.012”.</span><span
style="font-size:10.0pt;font-family:&quot;Helvetica&quot;,&quot;sans-serif&quot;;color:#26282A"><o:p></o:p></span></p>
                                <p
                                  class="m1603937236670712738xyiv1110160614msonormal"
                                  style="background:white"><span
style="font-size:10.0pt;font-family:&quot;Helvetica&quot;,&quot;sans-serif&quot;;color:#26282A"
                                    lang="EN-GB">Denis Welch said I
                                    should go 0.015”, cold, after
                                    fitting their “Fast Road” cam.</span><span
style="font-size:10.0pt;font-family:&quot;Helvetica&quot;,&quot;sans-serif&quot;;color:#26282A"><o:p></o:p></span></p>
                                <p
                                  class="m1603937236670712738xyiv1110160614msonormal"
                                  style="background:white"><span
style="font-size:10.0pt;font-family:&quot;Helvetica&quot;,&quot;sans-serif&quot;;color:#26282A"
                                    lang="EN-GB">The rolling road guy
                                    said 0.016”, warm.</span><span
style="font-size:10.0pt;font-family:&quot;Helvetica&quot;,&quot;sans-serif&quot;;color:#26282A"><o:p></o:p></span></p>
                                <p
                                  class="m1603937236670712738xyiv1110160614msonormal"
                                  style="background:white"><span
style="font-size:10.0pt;font-family:&quot;Helvetica&quot;,&quot;sans-serif&quot;;color:#26282A"
                                    lang="EN-GB"> </span><span
style="font-size:10.0pt;font-family:&quot;Helvetica&quot;,&quot;sans-serif&quot;;color:#26282A"><o:p></o:p></span></p>
                                <p
                                  class="m1603937236670712738xyiv1110160614msonormal"
                                  style="background:white"><span
style="font-size:10.0pt;font-family:&quot;Helvetica&quot;,&quot;sans-serif&quot;;color:#26282A"
                                    lang="EN-GB">I have the radiator out
                                    right now so I can get a nice socket
                                    onto that nut and have a go at the
                                    clearances.</span><span
style="font-size:10.0pt;font-family:&quot;Helvetica&quot;,&quot;sans-serif&quot;;color:#26282A"><o:p></o:p></span></p>
                                <p
                                  class="m1603937236670712738xyiv1110160614msonormal"
                                  style="background:white"><span
style="font-size:10.0pt;font-family:&quot;Helvetica&quot;,&quot;sans-serif&quot;;color:#26282A"
                                    lang="EN-GB">Stick with 0.015”,
                                    cold?</span><span
style="font-size:10.0pt;font-family:&quot;Helvetica&quot;,&quot;sans-serif&quot;;color:#26282A"><o:p></o:p></span></p>
                                <p
                                  class="m1603937236670712738xyiv1110160614msonormal"
                                  style="background:white"><span
style="font-size:10.0pt;font-family:&quot;Helvetica&quot;,&quot;sans-serif&quot;;color:#26282A"
                                    lang="EN-GB"> </span><span
style="font-size:10.0pt;font-family:&quot;Helvetica&quot;,&quot;sans-serif&quot;;color:#26282A"><o:p></o:p></span></p>
                                <p
                                  class="m1603937236670712738xyiv1110160614msonormal"
                                  style="background:white"><span
style="font-size:10.0pt;font-family:&quot;Helvetica&quot;,&quot;sans-serif&quot;;color:#26282A"
                                    lang="EN-GB">Thanks,</span><span
style="font-size:10.0pt;font-family:&quot;Helvetica&quot;,&quot;sans-serif&quot;;color:#26282A"><o:p></o:p></span></p>
                                <p
                                  class="m1603937236670712738xyiv1110160614msonormal"
                                  style="background:white"><span
style="font-size:10.0pt;font-family:&quot;Helvetica&quot;,&quot;sans-serif&quot;;color:#26282A"
                                    lang="EN-GB">Simon</span><span
style="font-size:10.0pt;font-family:&quot;Helvetica&quot;,&quot;sans-serif&quot;;color:#26282A"><o:p></o:p></span></p>
                              </div>
                              <p class="MsoNormal"
                                style="background:white"><span
style="font-size:10.0pt;font-family:&quot;Helvetica&quot;,&quot;sans-serif&quot;;color:#26282A"><o:p> </o:p></span></p>
                            </div>
                          </div>
                        </div>
                      </div>
                    </div>
                  </div>
                  <div
                    id="m_1603937236670712738x_DAB4FAD8-2DD7-40BB-A1B8-4E2AA1F9FDF2">
                    <table class="MsoNormalTable"
                      style="border:none;border-top:solid #D3D4DE 1.0pt"
                      cellspacing="3" cellpadding="0" border="1">
                      <tbody>
                        <tr>
                          <td
                            style="width:41.25pt;border:none;padding:9.75pt
                            .75pt .75pt .75pt" width="55"><br>
                          </td>
                          <td
                            style="width:352.5pt;border:none;padding:9.0pt
                            .75pt .75pt .75pt" width="470"><br>
                          </td>
                        </tr>
                      </tbody>
                    </table>
                  </div>
                </blockquote>
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      <pre class="moz-quote-pre" wrap="">_______________________________________________

Archive: <a class="moz-txt-link-freetext" href="http://www.team.net/pipermail/healeys">http://www.team.net/pipermail/healeys</a> <a class="moz-txt-link-freetext" href="http://autox.team.net/archive">http://autox.team.net/archive</a>

<a class="moz-txt-link-abbreviated" href="mailto:[email-masked]">[email-masked]</a>
<a class="moz-txt-link-freetext" href="http://autox.team.net/mailman/listinfo/healeys">http://autox.team.net/mailman/listinfo/healeys</a>

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