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Hi David -
This is very interesting. Let me see what it looks like when I get the
head off, and I might ask for your guy's contacts if that's what I
determine is the problem.
Best,
Alan
On Wed, Jan 27, 2021 at 2:27 AM David P <frogeye@porterscustom.com> wrote:
> I solved this by having a gasket maker in Lubbock make individual 0.0025
> rings to provide a little more squish around each bore. Dave
> On 1/26/2021 11:09 AM, WILLIAM B LAWRENCE wrote:
>
> If you are going to use a steel or MLS gasket you are going to have to
> resurface the block and head. They need a finer finish than copper.
>
> Bill Lawrence
> BN1 #554
> ------------------------------
> *From:* Healeys <healeys-bounces@autox.team.net>
> <healeys-bounces@autox.team.net> on behalf of Alan Seigrist
> <healey.nut@gmail.com> <healey.nut@gmail.com>
> *Sent:* Tuesday, January 26, 2021 2:54 AM
> *To:* Michael Oritt <michael.oritt@gmail.com> <michael.oritt@gmail.com>
> *Cc:* Healey list <Healeys@autox.team.net> <Healeys@autox.team.net>
> *Subject:* Re: [Healeys] 100-4 engine head gasket?
>
> Hi Michael -
>
> Sounds to me the smart thing to do is put in a steel head gasket because
> the head was rebuilt not that many miles ago, so I might have a low spot
> there. The head is torqued correctly so that's not it.
>
> Best,
>
> Alan
>
>
>
> On Mon, Jan 25, 2021 at 10:27 PM Michael Oritt <michael.oritt@gmail.com>
> wrote:
>
> Probably blown gasket at the 3-4 bridge. My original head suffered from
> erosion of the metal at the 1-2 bridge, allowing the gasket to blow. I had
> it built up enough to work for a while but eventually replaced the head
> with a DWR AL model.
>
> Best--Michael Oritt
>
> On Mon, Jan 25, 2021 at 4:55 AM Alan Seigrist <healey.nut@gmail.com>
> wrote:
>
> All -
>
> My A90 just started running weird. So I took a compression tester and I'm
> getting (note the A90 is lower compression than the 100):
>
> 1 - 135 psi
> 2 - 135 psi
> 3 - 60 psi
> 4 - 60 psi
>
> When I put the compression tester on number 3, I get blow back through #4
> spark plug port. Then when I put it on #4 I get blow back through the #3
> spark plug port.
>
> Seems to me it's just a blown head gasket.... am I correct? as far as I'm
> aware, these heads usually crack between 2 & 3, correct?
>
> TIA
>
> Alan
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> --
> Porter Custom Bicycles 2909 Arno St. NE Albuquerque, NM. 505-352-1378 My
> World go here: WWW.PORTERBIKES.COM/
>
> _______________________________________________
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--0000000000008c7bea05b9d89fd0
Content-Transfer-Encoding: quoted-printable
<div dir=3D"ltr">Hi David -<div><br></div><div>This is very interesting.=C2=
=A0 Let me see what it looks like when I get the head off, and I might ask =
for your guy's contacts if that's what I determine is the problem.<=
/div><div><br></div><div>Best,</div><div><br></div><div>Alan</div></div><br=
><div class=3D"gmail_quote"><div dir=3D"ltr" class=3D"gmail_attr">On Wed, J=
an 27, 2021 at 2:27 AM David P <<a href=3D"mailto:frogeye@porterscustom.=
com">frogeye@porterscustom.com</a>> wrote:<br></div><blockquote class=3D=
"gmail_quote" style=3D"margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(2=
04,204,204);padding-left:1ex">
=20
=20
=20
<div>
<p>I solved this by having a gasket maker in Lubbock make individual
0.0025 rings to provide a little more squish around each bore.=C2=A0
Dave<br>
</p>
<div>On 1/26/2021 11:09 AM, WILLIAM B
LAWRENCE wrote:<br>
</div>
<blockquote type=3D"cite">
=20
<div>If you are going to use a steel or MLS gasket you are going
to have to resurface the block and head. They need a finer
finish than copper.</div>
<div><br>
</div>
<div>Bill Lawrence</div>
<div>BN1 #554</div>
<hr style=3D"display:inline-block;width:98%">
<div id=3D"gmail-m_7686933974884765233divRplyFwdMsg" dir=3D"ltr"><fon=
t style=3D"font-size:11pt" face=3D"Calibri, sans-serif" color=3D"#000000"><=
b>From:</b>
Healeys <a href=3D"mailto:healeys-bounces@autox.team.net"; target=
=3D"_blank"><healeys-bounces@autox.team.net></a> on behalf of
Alan Seigrist <a href=3D"mailto:healey.nut@gmail.com"; target=3D"_=
blank"><healey.nut@gmail.com></a><br>
<b>Sent:</b> Tuesday, January 26, 2021 2:54 AM<br>
<b>To:</b> Michael Oritt <a href=3D"mailto:michael.oritt@gmail.co=
m" target=3D"_blank"><michael.oritt@gmail.com></a><br>
<b>Cc:</b> Healey list <a href=3D"mailto:Healeys@autox.team.net"; =
target=3D"_blank"><Healeys@autox.team.net></a><br>
<b>Subject:</b> Re: [Healeys] 100-4 engine head gasket?</font>
<div>=C2=A0</div>
</div>
<div>
<div dir=3D"ltr">Hi Michael -
<div><br>
</div>
<div>Sounds to me the smart thing to do is put in a steel
head=C2=A0gasket because the head was rebuilt not that many mil=
es
ago, so I might have a low spot there.=C2=A0 The head is torque=
d
correctly so that's not it.</div>
<div><br>
</div>
<div>Best,</div>
<div><br>
</div>
<div>Alan<br>
<div><br>
</div>
<div><br>
</div>
</div>
</div>
<br>
<div>
<div dir=3D"ltr">On Mon, Jan 25, 2021 at
10:27 PM Michael Oritt <<a href=3D"mailto:michael.oritt@gmai=
l.com" target=3D"_blank">michael.oritt@gmail.com</a>>
wrote:<br>
</div>
<blockquote style=3D"margin:0px 0px 0px 0.8ex;border-left:1px sol=
id rgb(204,204,204);padding-left:1ex">
<div dir=3D"ltr">
<div style=3D"color:rgb(51,51,255)">Probably
blown gasket at the 3-4 bridge.=C2=A0 My original head
suffered from erosion of the metal at the 1-2 bridge,
allowing the gasket to blow.=C2=A0 I had it built up enough
to work for a while=C2=A0but eventually replaced the head
with a DWR AL model.=C2=A0=C2=A0</div>
<div style=3D"color:rgb(51,51,255)"><br>
</div>
<div style=3D"color:rgb(51,51,255)">Best--Michael
Oritt</div>
</div>
<br>
<div>
<div dir=3D"ltr">On Mon, Jan 25, 2021
at 4:55 AM Alan Seigrist <<a href=3D"mailto:healey.nut@g=
mail.com" target=3D"_blank">healey.nut@gmail.com</a>>
wrote:<br>
</div>
<blockquote style=3D"margin:0px 0px 0px 0.8ex;border-left:1px=
solid rgb(204,204,204);padding-left:1ex">
<div dir=3D"ltr">All -
<div><br>
</div>
<div>My A90 just started running weird.=C2=A0 So I took a
compression tester and I'm getting (note the A90 is
lower compression than the 100):<br>
<br>
1 - 135 psi<br>
2 - 135 psi</div>
<div>3 - 60 psi</div>
<div>4 - 60 psi</div>
<div><br>
</div>
<div>When I put the compression tester on number 3, I
get blow back through #4 spark plug port.=C2=A0 Then wh=
en
I put it on #4 I get blow back through the #3 spark
plug port.<br>
<br>
Seems to me it's just a blown head gasket.... am I
correct?=C2=A0 as far as I'm aware, these heads usu=
ally
crack between 2 & 3, correct?</div>
<div><br>
</div>
<div>TIA<br>
<br>
Alan</div>
</div>
_______________________________________________<br>
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<pre cols=3D"72">--=20
Porter Custom Bicycles 2909 Arno St. NE Albuquerque, NM. 505-352-1378 My Wo=
rld go here: <a href=3D"http://WWW.PORTERBIKES.COM/"; target=3D"_blank">WWW.=
PORTERBIKES.COM/</a></pre>
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