Subject: Re: [TR] Setting valves Procedure

From: "Alex & Janet Thomson" <[email-masked]>
Date: Tue, 18 Sep 2018 20:56:53 -0400

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Except for small, air-cooled engines that may have an automatic =
compression release mechanism built into the cam shaft (either in the =
cam grind or as a centrifugal device), I always taught my shop students =
that you can never go wrong by bringing each cylinder up to =
TDC-compression and then adjust the valves for that cylinder. There are =
often a variety of short-cuts where a manufacturer will tell you to =
adjust certain valves at TDC - Compression of #1 cylinder and then the =
rest of them at TDC =E2=80=93 Exhaust #1 cylinder but those are engine =
specific. Most 4 cylinder engines have a firing order of 1-3-4-2, so if =
you see =E2=80=9Cvalve rock=E2=80=9D (exhaust closing, intake opening) =
on # 1 cylinder, you know that #4 is at TDC =E2=80=93 compression and =
its valves can be adjusted. Then, turn the crankshaft a half turn ( =
total number of cylinders divided by 2), and adjust the next cylinder in =
the firing order which would be #2. Then 1. Then 3.  Distributor rotor =
position on a gas engine will help you figure out who is at TDC =
=E2=80=93 compression. Diesels don=E2=80=99t have that option, other =
than pump timing marks for #1 cylinder. Look in your shop manual for =
details.

=20

Alex Thomson

=20

From: Triumphs [mailto:[email-masked]] On Behalf Of =
Paul Dorsey
Sent: Tuesday, September 18, 2018 6:33 PM
To: Triumph list Team.net
Subject: [TR] Setting valves Procedure

=20

 Is there a universally excepted method by which to  adjust the  valves =
for A  TR three? I know when I asked about this  before that Randall =
sent me a link to a bunch of articles but I don=E2=80=99t think any of =
them  concern setting The valves.  Where can I learn to do this?

=20

Thanks, Paul Dorsey TR three 1960

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</o:shapelayout></xml><![endif]--></head><body lang=3DEN-US link=3Dblue =
vlink=3Dpurple><div class=3DWordSection1><p class=3DMsoNormal><span =
style=3D'font-family:"Calibri","sans-serif";color:#1F497D'>Except for =
small, air-cooled engines that may have an automatic compression release =
mechanism built into the cam shaft (either in the cam grind or as a =
centrifugal device), I always taught my shop students that you can never =
go wrong by bringing each cylinder up to TDC-compression and then adjust =
the valves for that cylinder. There are often a variety of short-cuts =
where a manufacturer will tell you to adjust certain valves at TDC - =
Compression of #1 cylinder and then the rest of them at TDC =E2=80=93 =
Exhaust #1 cylinder but those are engine specific. Most 4 cylinder =
engines have a firing order of 1-3-4-2, so if you see =E2=80=9Cvalve =
rock=E2=80=9D (exhaust closing, intake opening) on # 1 cylinder, you =
know that #4 is at TDC =E2=80=93 compression and its valves can be =
adjusted. Then, turn the crankshaft a half turn ( total number of =
cylinders divided by 2), and adjust the next cylinder in the firing =
order which would be #2. Then 1. Then 3.=C2=A0 Distributor rotor =
position on a gas engine will help you figure out who is at TDC =
=E2=80=93 compression. Diesels don=E2=80=99t have that option, other =
than pump timing marks for #1 cylinder. Look in your shop manual for =
details.<o:p></o:p></span></p><p class=3DMsoNormal><span =
style=3D'font-family:"Calibri","sans-serif";color:#1F497D'><o:p>&nbsp;</o=
:p></span></p><p class=3DMsoNormal><span =
style=3D'font-family:"Calibri","sans-serif";color:#1F497D'>Alex =
Thomson<o:p></o:p></span></p><p class=3DMsoNormal><span =
style=3D'font-family:"Calibri","sans-serif";color:#1F497D'><o:p>&nbsp;</o=
:p></span></p><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"'> =
Triumphs [mailto:[email-masked]] <b>On Behalf Of =
</b>Paul Dorsey<br><b>Sent:</b> Tuesday, September 18, 2018 6:33 =
PM<br><b>To:</b> Triumph list Team.net<br><b>Subject:</b> [TR] Setting =
valves Procedure<o:p></o:p></span></p><p =
class=3DMsoNormal><o:p>&nbsp;</o:p></p><div><p =
class=3DMsoNormal>&nbsp;Is there a universally excepted method by which =
to &nbsp;adjust the &nbsp;valves for A &nbsp;TR three? I know when I =
asked about this &nbsp;before that Randall sent me a link to a bunch of =
articles but I don=E2=80=99t think any of them &nbsp;concern setting The =
valves.&nbsp; Where can I learn to do this?<o:p></o:p></p></div><div><p =
class=3DMsoNormal><o:p>&nbsp;</o:p></p></div><div><p =
class=3DMsoNormal>Thanks, Paul Dorsey TR three =
1960<o:p></o:p></p></div></div></body></html>
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** [email-masked] **

Archive: http://www.team.net/pipermail/triumphs  http://www.team.net/archive

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From: Paul Dorsey <[email-masked]>
Date: Tue, 18 Sep 2018 21:05:34 -0400

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RYE, is your method of adjusting valves consistent with Alex=E2=80=99s? I s=
uspect
they are the same

On Tue, Sep 18, 2018 at 8:56 PM Alex & Janet Thomson <
[email-masked]> wrote:

> Except for small, air-cooled engines that may have an automatic
> compression release mechanism built into the cam shaft (either in the cam
> grind or as a centrifugal device), I always taught my shop students that
> you can never go wrong by bringing each cylinder up to TDC-compression an=
d
> then adjust the valves for that cylinder. There are often a variety of
> short-cuts where a manufacturer will tell you to adjust certain valves at
> TDC - Compression of #1 cylinder and then the rest of them at TDC =E2=80=
=93 Exhaust
> #1 cylinder but those are engine specific. Most 4 cylinder engines have a
> firing order of 1-3-4-2, so if you see =E2=80=9Cvalve rock=E2=80=9D (exha=
ust closing,
> intake opening) on # 1 cylinder, you know that #4 is at TDC =E2=80=93 com=
pression
> and its valves can be adjusted. Then, turn the crankshaft a half turn (
> total number of cylinders divided by 2), and adjust the next cylinder in
> the firing order which would be #2. Then 1. Then 3.  Distributor rotor
> position on a gas engine will help you figure out who is at TDC =E2=80=93
> compression. Diesels don=E2=80=99t have that option, other than pump timi=
ng marks
> for #1 cylinder. Look in your shop manual for details.
>
>
>
> Alex Thomson
>
>
>
> *From:* Triumphs [mailto:[email-masked]] *On Behalf Of *=
Paul
> Dorsey
> *Sent:* Tuesday, September 18, 2018 6:33 PM
> *To:* Triumph list Team.net
> *Subject:* [TR] Setting valves Procedure
>
>
>
>  Is there a universally excepted method by which to  adjust the  valves
> for A  TR three? I know when I asked about this  before that Randall sent
> me a link to a bunch of articles but I don=E2=80=99t think any of them  c=
oncern
> setting The valves.  Where can I learn to do this?
>
>
>

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<div><div dir=3D"auto">RYE, is your method of adjusting valves consistent w=
ith Alex=E2=80=99s? I suspect they are the same</div></div><div><br><div cl=
ass=3D"gmail_quote"><div dir=3D"ltr">On Tue, Sep 18, 2018 at 8:56 PM Alex &=
amp; Janet Thomson &lt;<a href=3D"mailto:[email-masked]">aljlthoms=
[email-masked]</a>&gt; wrote:<br></div><blockquote class=3D"gmail_quote" st=
yle=3D"margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div =
lang=3D"EN-US" link=3D"blue" vlink=3D"purple"><div class=3D"m_6484643244353=
851995WordSection1"><p class=3D"MsoNormal"><span style=3D"font-family:&quot=
;Calibri&quot;,&quot;sans-serif&quot;;color:#1f497d">Except for small, air-=
cooled engines that may have an automatic compression release mechanism bui=
lt into the cam shaft (either in the cam grind or as a centrifugal device),=
 I always taught my shop students that you can never go wrong by bringing e=
ach cylinder up to TDC-compression and then adjust the valves for that cyli=
nder. There are often a variety of short-cuts where a manufacturer will tel=
l you to adjust certain valves at TDC - Compression of #1 cylinder and then=
 the rest of them at TDC =E2=80=93 Exhaust #1 cylinder but those are engine=
 specific. Most 4 cylinder engines have a firing order of 1-3-4-2, so if yo=
u see =E2=80=9Cvalve rock=E2=80=9D (exhaust closing, intake opening) on # 1=
 cylinder, you know that #4 is at TDC =E2=80=93 compression and its valves =
can be adjusted. Then, turn the crankshaft a half turn ( total number of cy=
linders divided by 2), and adjust the next cylinder in the firing order whi=
ch would be #2. Then 1. Then 3.=C2=A0 Distributor rotor position on a gas e=
ngine will help you figure out who is at TDC =E2=80=93 compression. Diesels=
 don=E2=80=99t have that option, other than pump timing marks for #1 cylind=
er. Look in your shop manual for details.<u></u><u></u></span></p><p class=
=3D"MsoNormal"><span style=3D"font-family:&quot;Calibri&quot;,&quot;sans-se=
rif&quot;;color:#1f497d"><u></u>=C2=A0<u></u></span></p><p class=3D"MsoNorm=
al"><span style=3D"font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;;c=
olor:#1f497d">Alex Thomson<u></u><u></u></span></p><p class=3D"MsoNormal"><=
span style=3D"font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:=
#1f497d"><u></u>=C2=A0<u></u></span></p><p class=3D"MsoNormal"><b><span sty=
le=3D"font-size:10.0pt;font-family:&quot;Tahoma&quot;,&quot;sans-serif&quot=
;">From:</span></b><span style=3D"font-size:10.0pt;font-family:&quot;Tahoma=
&quot;,&quot;sans-serif&quot;"> Triumphs [mailto:<a href=3D"mailto:triumphs=
[email-masked]" target=3D"_blank">[email-masked]<=
/a>] <b>On Behalf Of </b>Paul Dorsey<br><b>Sent:</b> Tuesday, September 18,=
 2018 6:33 PM<br><b>To:</b> Triumph list Team.net<br><b>Subject:</b> [TR] S=
etting valves Procedure<u></u><u></u></span></p></div></div><div lang=3D"EN=
-US" link=3D"blue" vlink=3D"purple"><div class=3D"m_6484643244353851995Word=
Section1"><p class=3D"MsoNormal"><u></u>=C2=A0<u></u></p><div><p class=3D"M=
soNormal">=C2=A0Is there a universally excepted method by which to =C2=A0ad=
just the =C2=A0valves for A =C2=A0TR three? I know when I asked about this =
=C2=A0before that Randall sent me a link to a bunch of articles but I don=
=E2=80=99t think any of them =C2=A0concern setting The valves.=C2=A0 Where =
can I learn to do this?<u></u><u></u></p></div><div><p class=3D"MsoNormal">=
<u></u>=C2=A0<u></u></p></div><div><p class=3D"MsoNormal">Thanks, Paul Dors=
ey TR three 1960<u></u><u></u></p></div></div></div></blockquote></div></di=
v>

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From: "Randall" <[email-masked]>
Date: Wed, 19 Sep 2018 08:04:46 -0400

>  I 
> always taught my shop students that you can never go wrong by 
> bringing each cylinder up to TDC-compression and then adjust 
> the valves for that cylinder.

This is essentially the same as described in the workshop manual.
https://drive.google.com/open?id=0B2H2NJt34OffYWZiN2VlZGMtNTkxMi00NGUzLWE4Nz
MtMGRkODRkYzU3MDU1

It says to turn the engine until any pair of valves are "on the point of
rock" meaning both valves are moving and open by roughly the same amount.
This positions that cylinder at TDC-exhaust.  Then it says to turn the
engine one full rotation, which will bring that cylinder to TDC-compression.

Adjust both valves for that cylinder, then turn the engine forward by 1/2
revolution (180 crankshaft degrees) to bring the next cylinder in the firing
sequence to TDC-compression.

I use Alex's method : Just turn until any cylinder is "on rock" (again both
valves are moving, anywhere in the range where they are both moving will
do); then set the valves on the cylinder that is opposite in the firing
sequence.  Then turn it forward until the next cylinder in the firing order
comes up on rock, and set it's opposite cylinder.

So, for example, if #3 is "on rock", set the valves for #2.  Then turn the
engine forward until #4 comes up (exhaust closing and intake opening) and
set the valves for #1. #2 on rock, set #3. #1 on rock, set #4.

Repeat for good luck, this time just checking that all the clearances are
right.  Then I like to start the engine and let it idle with the rocker
cover off, just long enough to ensure that oil eventually flows to all the
rockers.  It may take a minute or two, but you should eventually get oil
oozing from the hole on top of each rocker.  If not, there may be a blockage
in the shaft (or the passages leading to it).  On one "rebuilt" engine, I
found that the rear cam bearing had been installed backwards and there was
no oil flow at all!

There is a different procedure described in the Haynes manual (and other
sources) known as the "rule of 9", but to me it is more complicated.
https://drive.google.com/open?id=0B2H2NJt34OffYTA1NTNmMGUtMTVjMy00NDEzLWJjN2
YtNTc1OWRkNjE4MjY4

One other point: The workshop manual says to set the exhaust valves to
.012".  However, this figure was changed to .010" during TR2 production,
when the aluminum alloy rocker pedestals were introduced (rather than the
original cast iron).  So unless you have one of those very early engines
(still with cast iron pedestals, the alloy pedestals were a factory-approved
retrofit), you should set both intake and exhaust to .010".

(Unless of course you have an aftermarket performance cam that calls for
more clearance.)

-- Randall