<html><body>Upon assembly of a 100 engine, if you replaced the cam, cam gears etc.with new parts, the indicated punch mark for the 100 is not correct. IT IS ONLY CORRECT FOR A 6-CYLINDER engine. You cannot use the mark and must follow the diagram in the manual and add a mark after you locate top center to the cam angles. (photo) They do not sell a cam sprocket for the four cylinder engine and you must correct the one supplied or your valve timing would be way off as you found with no compression. You should have 120-150 lbs on each cylinder-equally-even with an new engine that does not have the rings seated. After correcting the cam timing be sure that the distributor is not 180 degrees out. Good luck, Hank<br><br><div class="reply-new-signature"></div><p>-----------------------------------------</p>From: "Mike Sinclair" <phoenix722@comcast.net><br>To: healeys@autox.team.net<br>Cc: <br>Sent: Monday June 12 2023 10:08:09AM<br>Subject: Re: [Healeys] Rebuilt Engine Compression<br><br>
<p><font size="2"><font face="Tahoma">Is it possible to install the
cam backwards? It is on some cars.</font></font></p>
<p><font size="2"><font face="Tahoma">Mike</font></font><br></p>
<div class="moz-cite-prefix">On 6/12/23 6:52 AM, Ron Osowski via
Healeys wrote:<br></div>
<blockquote>
Compression reading that low suggests that the cam may not be
properly indexed to the crank. Have you double checked the timing
chain installation since the rebuild?<br><br><p>-----------------------------------------</p>
From: "Patrick and Caroline Quinn via Healeys"<br>
To: <a class="moz-txt-link-rfc2396E">"healeys@autox.team.net"</a><br>
Cc:<br>
Sent: Monday June 12 2023 2:05:10AM<br>
Subject: [Healeys] Rebuilt Engine Compression<br><br><div class="WordSection1">
<p class="MsoNormal">Hello</p>
<p class="MsoNormal"> </p>
<p class="MsoNormal">No amount of churning over with a new battery
will induce the BN3’s rebuilt engine to fire. Even towing the car
up and down the road failed to instill any life into the
engine.</p>
<p class="MsoNormal"> </p>
<p class="MsoNormal">Everything is spot on – timing, spark and
fuel.</p>
<p class="MsoNormal"> </p>
<p class="MsoNormal">Anyone have an idea as to what the compression
be on a rebuilt engine should be?</p>
<p class="MsoNormal"> </p>
<p class="MsoNormal">Many thanks</p>
<p class="MsoNormal"> </p>
<p class="MsoNormal">Patrick Quinn</p>
<p class="MsoNormal">Blue Mountains, Australia</p>
</div>
<br><br>
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