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<p>Not at all uncommon on the 4 cyl engines. Easy solution is to
have copper/steel/whatever O-rings made to sit atop the regular
head gasket. I used to have Mordy Dunst at Gasket Works make them
for me.. Unsure if he is still in business. Typically I had them
at .002-.003 in thickness. This allows a bit more sealing around
the bores. Used a smear of lube to hold them in position when
dropping the head on. Follow installation with a good coolant
sealant (K-Seal) prophyactically.</p>
<p>DaveP<br>
</p>
<br>
<div class="moz-cite-prefix">On 8/29/2017 10:46 AM, Wayne Schultz
wrote:<br>
</div>
<blockquote type="cite"
cite="mid:CAKjtSfjt_2_6g_SVQZhwv9esFDaCghXNsmUrSfmQ0yM+9yvpZQ@mail.gmail.com">
<div dir="ltr">Hello,
<div><br>
</div>
<div> My friend Bob had a problem with his Early BN1.
The engine was rebuilt 2K miles ago or so and after several
trips at speed on the highway cylinders 2 and 3 lost
compression. The picture explains what we found when we pulled
the head. The head has a 4 thousandth warp between cylinders 2
and 3 and a 2 thousandth warp between cylinders 1 and 2. The
engine was rebuilt by the previous owner so we don't know what
was done , but the head looks like it was milled before. Bob
had planed on installing a aluminum head soon anyway so not a
big deal. I thought people would like the picture. We are
installing a Denis Welsh head with new hardware and their
steel head gasket. </div>
<div><br>
</div>
<div> Wayne</div>
</div>
<br>
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<div class="moz-signature">-- <br>
Dave Porter
Porter Custom Bicycles
2909 Arno St. NE
Albuquerque, NM 87107
505-352-1378
Go HERE: my world <a class="moz-txt-link-abbreviated" href="http://www.porterbikes.com/">www.porterbikes.com/</a>
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