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Re: [Healeys] Rebuilt Engine Compression

To: Patrick and Caroline Quinn <p.cquinn@outlook.com>
Subject: Re: [Healeys] Rebuilt Engine Compression
From: Michael Oritt <michael.oritt@gmail.com>
Date: Mon, 12 Jun 2023 07:39:08 -0400
Cc: "healeys@autox.team.net" <healeys@autox.team.net>
Delivered-to: mharc@autox.team.net
Delivered-to: healeys@autox.team.net
References: <TY2PR0101MB27674CF93435EBF08F0D71998C54A@TY2PR0101MB2767.apcprd01.prod.exchangelabs.com> <67f11e1a-61b7-a148-087f-c5d37f5b248b@chello.nl> <TY2PR0101MB27671851E6EEA896B80EF8958C54A@TY2PR0101MB2767.apcprd01.prod.exchangelabs.com>
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Patrick--

Let's go back to the beginning:  When you crank the engine with one plug
removed and grounded against the engine is there any spark across the
electrode gap?

Best--Michael Oritt

On Mon, Jun 12, 2023 at 6:11=E2=80=AFAM Patrick and Caroline Quinn <
p.cquinn@outlook.com> wrote:

> Hello Kees
>
>
>
> Thank you for your response.
>
>
>
> I=E2=80=99m afraid I tried all that. Plugs are wet! Even made sure the ea=
rth strap
> was earthing properly. Also used a starting fluid called =E2=80=9CStart y=
a Bastard!=E2=80=9D
>
>
>
> I did a compression test and each cylinder was between 5 and 10 lbs. Not
> quite what it should be.
>
>
>
> When the engine expired last year, the first thing I did was to have the
> cylinder head pressure tested. It was okay, but I suspect that when they
> put it back together the valves were not lapped in. The head comes off ne=
xt
> weekend to check.
>
>
>
> Hoo Roo
>
>
>
> Patrick Quinn
>
>
>
> *From:* Healeys <healeys-bounces@autox.team.net> *On Behalf Of *Kees
> Oudesluijs via Healeys
> *Sent:* Monday, June 12, 2023 6:43 PM
> *To:* healeys@autox.team.net
> *Subject:* Re: [Healeys] Rebuilt Engine Compression
>
>
>
> Did you check the firing order, camshaft timing, valve clearances? Does
> the distributor shaft turn when the engine is turning over?
>
> Check the bypass wiring of the ballast resistor. Check the correct wiring
> of the coil, you would not be te first to have the polarity wrong.
>
> The compression on a freshly rebuild engine is lower than on an engine
> that has been properly run in. It also depends on the tolerances and
> surface finishes used in the rebuild. Assuming that it is a proper rebuil=
d
> the compression should not be an issue here. Whatever the compression the
> engine should start.
>
> Timing and fuel cannot be spot on as the engine is not running and fine
> tuning of mixture and ignition should be made on a running engine.  It is
> however not an issue either as you set ignition initially statically as y=
ou
> do with the adjustment of the carbs and it should at least run on that.
>
> Are the spark plugs wet or dry after churning? Try spraying some easy
> start fluid (mainly Aether) into the throat of the carbs during turning
> over and see if you get some life.  If so it is a fuel issue.
>
> Good luck.
>
>
>
> Kees Oudesluijs
>
>
>
>
>
>
>
> Op 12-6-2023 om 07:41 schreef Patrick and Caroline Quinn via Healeys:
>
> Hello
>
>
>
> No amount of churning over with a new battery will induce the BN3=E2=80=
=99s
> rebuilt engine to fire. Even towing the car up and down the road failed t=
o
> instill any life into the engine.
>
>
>
> Everything is spot on =E2=80=93 timing, spark and fuel.
>
>
>
> Anyone have an idea as to what the compression be on a rebuilt engine
> should be?
>
>
>
> Many thanks
>
>
>
> Patrick Quinn
>
> Blue Mountains, Australia
>
>
>
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>
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<div dir=3D"ltr"><div class=3D"gmail_default" style=3D"color:#3333ff">Patri=
ck--</div><div class=3D"gmail_default" style=3D"color:#3333ff"><br></div><d=
iv class=3D"gmail_default" style=3D"color:#3333ff">Let&#39;s go=C2=A0back t=
o the beginning:=C2=A0 When you crank the engine with one plug removed and =
grounded against the engine is there any spark across the electrode gap?</d=
iv><div class=3D"gmail_default" style=3D"color:#3333ff"><br></div><div clas=
s=3D"gmail_default" style=3D"color:#3333ff">Best--Michael Oritt</div></div>=
<br><div class=3D"gmail_quote"><div dir=3D"ltr" class=3D"gmail_attr">On Mon=
, Jun 12, 2023 at 6:11=E2=80=AFAM Patrick and Caroline Quinn &lt;<a href=3D=
"mailto:p.cquinn@outlook.com";>p.cquinn@outlook.com</a>&gt; wrote:<br></div>=
<blockquote class=3D"gmail_quote" style=3D"margin:0px 0px 0px 0.8ex;border-=
left:1px solid rgb(204,204,204);padding-left:1ex"><div class=3D"msg17195459=
65501551727">





<div lang=3D"EN-AU" style=3D"overflow-wrap: break-word;">
<div class=3D"m_1719545965501551727WordSection1">
<p class=3D"MsoNormal">Hello Kees<u></u><u></u></p>
<p class=3D"MsoNormal"><u></u>=C2=A0<u></u></p>
<p class=3D"MsoNormal">Thank you for your response.<u></u><u></u></p>
<p class=3D"MsoNormal"><u></u>=C2=A0<u></u></p>
<p class=3D"MsoNormal">I=E2=80=99m afraid I tried all that. Plugs are wet! =
Even made sure the earth strap was earthing properly. Also used a starting =
fluid called =E2=80=9CStart ya Bastard!=E2=80=9D<u></u><u></u></p>
<p class=3D"MsoNormal"><u></u>=C2=A0<u></u></p>
<p class=3D"MsoNormal">I did a compression test and each cylinder was betwe=
en 5 and 10 lbs. Not quite what it should be.<u></u><u></u></p>
<p class=3D"MsoNormal"><u></u>=C2=A0<u></u></p>
<p class=3D"MsoNormal">When the engine expired last year, the first thing I=
 did was to have the cylinder head pressure tested. It was okay, but I susp=
ect that when they put it back together the valves were not lapped in. The =
head comes off next weekend to check.<u></u><u></u></p>
<p class=3D"MsoNormal"><u></u>=C2=A0<u></u></p>
<p class=3D"MsoNormal">Hoo Roo<u></u><u></u></p>
<p class=3D"MsoNormal"><u></u>=C2=A0<u></u></p>
<p class=3D"MsoNormal">Patrick Quinn<u></u><u></u></p>
<p class=3D"MsoNormal"><u></u>=C2=A0<u></u></p>
<div>
<div style=3D"border-right:none;border-bottom:none;border-left:none;border-=
top:1pt solid rgb(225,225,225);padding:3pt 0cm 0cm">
<p class=3D"MsoNormal"><b><span lang=3D"EN-US">From:</span></b><span lang=
=3D"EN-US"> Healeys &lt;<a href=3D"mailto:healeys-bounces@autox.team.net"; t=
arget=3D"_blank">healeys-bounces@autox.team.net</a>&gt;
<b>On Behalf Of </b>Kees Oudesluijs via Healeys<br>
<b>Sent:</b> Monday, June 12, 2023 6:43 PM<br>
<b>To:</b> <a href=3D"mailto:healeys@autox.team.net"; target=3D"_blank">heal=
eys@autox.team.net</a><br>
<b>Subject:</b> Re: [Healeys] Rebuilt Engine Compression<u></u><u></u></spa=
n></p>
</div>
</div>
<p class=3D"MsoNormal"><u></u>=C2=A0<u></u></p>
<p>Did you check the firing order, camshaft timing, valve clearances? Does =
the distributor shaft turn when the engine is turning over?<span><u></u><u>=
</u></span></p>
<p>Check the bypass wiring of the ballast resistor. Check the correct wirin=
g of the coil, you would not be te first to have the polarity wrong.<u></u>=
<u></u></p>
<p>The compression on a freshly rebuild engine is lower than on an engine t=
hat has been properly run in. It also depends on the tolerances and surface=
 finishes used in the rebuild. Assuming that it is a proper rebuild the com=
pression should not be an issue
 here. Whatever the compression the engine should start.<u></u><u></u></p>
<p>Timing and fuel cannot be spot on as the engine is not running and fine =
tuning of mixture and ignition should be made on a running engine.=C2=A0 It=
 is however not an issue either as you set ignition initially statically as=
 you do with the adjustment of the carbs
 and it should at least run on that.<u></u><u></u></p>
<p>Are the spark plugs wet or dry after churning? Try spraying some easy st=
art fluid (mainly Aether) into the throat of the carbs during turning over =
and see if you get some life.=C2=A0 If so it is a fuel issue.<u></u><u></u>=
</p>
<p>Good luck.<u></u><u></u></p>
<p><u></u>=C2=A0<u></u></p>
<p>Kees Oudesluijs<u></u><u></u></p>
<p><u></u>=C2=A0<u></u></p>
<p><u></u>=C2=A0<u></u></p>
<p><u></u>=C2=A0<u></u></p>
<div>
<p class=3D"MsoNormal">Op 12-6-2023 om 07:41 schreef Patrick and Caroline Q=
uinn via Healeys:<u></u><u></u></p>
</div>
<blockquote style=3D"margin-top:5pt;margin-bottom:5pt">
<p class=3D"MsoNormal">Hello<u></u><u></u></p>
<p class=3D"MsoNormal">=C2=A0<u></u><u></u></p>
<p class=3D"MsoNormal">No amount of churning over with a new battery will i=
nduce the BN3=E2=80=99s rebuilt engine to fire. Even towing the car up and =
down the road failed to instill any life into the engine.<u></u><u></u></p>
<p class=3D"MsoNormal">=C2=A0<u></u><u></u></p>
<p class=3D"MsoNormal">Everything is spot on =E2=80=93 timing, spark and fu=
el.<u></u><u></u></p>
<p class=3D"MsoNormal">=C2=A0<u></u><u></u></p>
<p class=3D"MsoNormal">Anyone have an idea as to what the compression be on=
 a rebuilt engine should be?<u></u><u></u></p>
<p class=3D"MsoNormal">=C2=A0<u></u><u></u></p>
<p class=3D"MsoNormal">Many thanks<u></u><u></u></p>
<p class=3D"MsoNormal">=C2=A0<u></u><u></u></p>
<p class=3D"MsoNormal">Patrick Quinn<u></u><u></u></p>
<p class=3D"MsoNormal">Blue Mountains, Australia<u></u><u></u></p>
<p class=3D"MsoNormal"><span><br>
<br>
<u></u><u></u></span></p>
<pre>_______________________________________________<u></u><u></u></pre>
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