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Hello Patrick,
Between 5 and 10lbs can barely be called a compression so something
serious is amiss. It should be well above 5bar for any engine. Depending
on C-R and wear. Even with a slightly burned or not lapped in valve.
If it is not the clearances it really looks like a head off job to
investigate and sort the valves. Luckily not too big a job on the A-H.
Cheers,
Kees
Op 12-6-2023 om 12:01 schreef Patrick and Caroline Quinn:
>
> Hello Kees
>
> Thank you for your response.
>
> Iâ??m afraid I tried all that. Plugs are wet! Even made sure the earth
> strap was earthing properly. Also used a starting fluid called â??Start
> ya Bastard!â??
>
> 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 next 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
> rebuild 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 you 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
> BN3â??s rebuilt engine to fire. Even towing the car up and down the
> road failed to instill any life into the engine.
>
> Everything is spot on â?? 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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<p><br>
Hello Patrick,</p>
<p><br>
</p>
<p>Between 5 and 10lbs can barely be called a compression so
something serious is amiss. It should be well above 5bar for any
engine. Depending on C-R and wear. Even with a slightly burned or
not lapped in valve.<br>
</p>
<p>If it is not the clearances it really looks like a head off job
to investigate and sort the valves. Luckily not too big a job on
the A-H.</p>
<br>
<p>Cheers,<br>
Kees</p>
<p><br>
</p>
<p><br>
</p>
<div class="moz-cite-prefix">Op 12-6-2023 om 12:01 schreef Patrick
and Caroline Quinn:<br>
</div>
<blockquote type="cite"
cite="mid:TY2PR0101MB27671851E6EEA896B80EF8958C54A@TY2PR0101MB2767.apcprd01.prod.exchangelabs.com">
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<div class="WordSection1">
<p class="MsoNormal">Hello Kees<o:p></o:p></p>
<p class="MsoNormal"><o:p>Â </o:p></p>
<p class="MsoNormal">Thank you for your response.<o:p></o:p></p>
<p class="MsoNormal"><o:p>Â </o:p></p>
<p class="MsoNormal">Iâ??m afraid I tried all that. Plugs are wet!
Even made sure the earth strap was earthing properly. Also
used a starting fluid called â??Start ya Bastard!â??<o:p></o:p></p>
<p class="MsoNormal"><o:p>Â </o:p></p>
<p class="MsoNormal">I did a compression test and each cylinder
was between 5 and 10 lbs. Not quite what it should be.<o:p></o:p></p>
<p class="MsoNormal"><o:p>Â </o:p></p>
<p class="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 suspect that when they put it back
together the valves were not lapped in. The head comes off
next weekend to check.<o:p></o:p></p>
<p class="MsoNormal"><o:p>Â </o:p></p>
<p class="MsoNormal">Hoo Roo<o:p></o:p></p>
<p class="MsoNormal"><o:p>Â </o:p></p>
<p class="MsoNormal">Patrick Quinn<o:p></o:p></p>
<p class="MsoNormal"><o:p>Â </o:p></p>
<div>
<div style="border:none;border-top:solid #E1E1E1
1.0pt;padding:3.0pt 0cm 0cm 0cm">
<p class="MsoNormal"><b><span
style="mso-ligatures:none;mso-fareast-language:EN-AU"
lang="EN-US">From:</span></b><span
style="mso-ligatures:none;mso-fareast-language:EN-AU"
lang="EN-US"> Healeys
<a class="moz-txt-link-rfc2396E"
href="mailto:healeys-bounces@autox.team.net";><healeys-bounces@autox.team.net></a>
<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 class="moz-txt-link-abbreviated"
href="mailto:healeys@autox.team.net";>healeys@autox.team.net</a><br>
<b>Subject:</b> Re: [Healeys] Rebuilt Engine
Compression<o:p></o:p></span></p>
</div>
</div>
<p class="MsoNormal"><o:p>Â </o:p></p>
<p>Did you check the firing order, camshaft timing, valve
clearances? Does the distributor shaft turn when the engine is
turning over?<span
style="mso-ligatures:none;mso-fareast-language:EN-AU"><o:p></o:p></span></p>
<p>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.<o:p></o:p></p>
<p>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 rebuild the compression should
not be an issue here. Whatever the compression the engine
should start.<o:p></o:p></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. 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.<o:p></o:p></p>
<p>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.<o:p></o:p></p>
<p>Good luck.<o:p></o:p></p>
<p><o:p>Â </o:p></p>
<p>Kees Oudesluijs<o:p></o:p></p>
<p><o:p>Â </o:p></p>
<p><o:p>Â </o:p></p>
<p><o:p>Â </o:p></p>
<div>
<p class="MsoNormal">Op 12-6-2023 om 07:41 schreef Patrick and
Caroline Quinn via Healeys:<o:p></o:p></p>
</div>
<blockquote style="margin-top:5.0pt;margin-bottom:5.0pt">
<p class="MsoNormal">Hello<o:p></o:p></p>
<p class="MsoNormal">Â <o:p></o:p></p>
<p class="MsoNormal">No amount of churning over with a new
battery will induce the BN3â??s rebuilt engine to fire. Even
towing the car up and down the road failed to instill any
life into the engine.<o:p></o:p></p>
<p class="MsoNormal">Â <o:p></o:p></p>
<p class="MsoNormal">Everything is spot on â?? timing, spark and
fuel.<o:p></o:p></p>
<p class="MsoNormal">Â <o:p></o:p></p>
<p class="MsoNormal">Anyone have an idea as to what the
compression be on a rebuilt engine should be?<o:p></o:p></p>
<p class="MsoNormal">Â <o:p></o:p></p>
<p class="MsoNormal">Many thanks<o:p></o:p></p>
<p class="MsoNormal">Â <o:p></o:p></p>
<p class="MsoNormal">Patrick Quinn<o:p></o:p></p>
<p class="MsoNormal">Blue Mountains, Australia<o:p></o:p></p>
<p class="MsoNormal"><span
style="mso-ligatures:none;mso-fareast-language:EN-AU"><br>
<br>
<o:p></o:p></span></p>
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