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Re: [Healeys] 100-4 engine head gasket?

To: Alan Seigrist <healey.nut@gmail.com>, Michael Oritt <michael.oritt@gmail.com>
Subject: Re: [Healeys] 100-4 engine head gasket?
From: WILLIAM B LAWRENCE <ynotink@msn.com>
Date: Tue, 26 Jan 2021 18:09:10 +0000
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Thread-topic: [Healeys] 100-4 engine head gasket?
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If you are going to use a steel or MLS gasket you are going to have to resu=
rface the block and head. They need a finer finish than copper.

Bill Lawrence
BN1 #554
________________________________
From: Healeys <healeys-bounces@autox.team.net> on behalf of Alan Seigrist <=
healey.nut@gmail.com>
Sent: Tuesday, January 26, 2021 2:54 AM
To: Michael Oritt <michael.oritt@gmail.com>
Cc: Healey list <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 th=
e head was rebuilt not that many miles ago, so I might have a low spot ther=
e.  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<mai=
lto:michael.oritt@gmail.com>> wrote:
Probably blown gasket at the 3-4 bridge.  My original head suffered from er=
osion of the metal at the 1-2 bridge, allowing the gasket to blow.  I had i=
t built up enough to work for a while but eventually replaced the head with=
 a DWR AL model.

Best--Michael Oritt

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 s=
park plug port.  Then when I put it on #4 I get blow back through the #3 sp=
ark 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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ritt@gmail.com


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<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%" tabindex=3D"-1">
<div id=3D"divRplyFwdMsg" dir=3D"ltr"><font face=3D"Calibri, sans-serif" st=
yle=3D"font-size:11pt" color=3D"#000000"><b>From:</b> Healeys &lt;healeys-b=
ounces@autox.team.net&gt; on behalf of Alan Seigrist &lt;healey.nut@gmail.c=
om&gt;<br>
<b>Sent:</b> Tuesday, January 26, 2021 2:54 AM<br>
<b>To:</b> Michael Oritt &lt;michael.oritt@gmail.com&gt;<br>
<b>Cc:</b> Healey list &lt;Healeys@autox.team.net&gt;<br>
<b>Subject:</b> Re: [Healeys] 100-4 engine head gasket?</font>
<div>&nbsp;</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&nbsp;gasket =
because the head was rebuilt not that many miles ago, so I might have a low=
 spot there.&nbsp; The head is torqued 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 class=3D"x_gmail_quote">
<div dir=3D"ltr" class=3D"x_gmail_attr">On Mon, Jan 25, 2021 at 10:27 PM Mi=
chael Oritt &lt;<a href=3D"mailto:michael.oritt@gmail.com";>michael.oritt@gm=
ail.com</a>&gt; wrote:<br>
</div>
<blockquote class=3D"x_gmail_quote" style=3D"margin:0px 0px 0px 0.8ex; bord=
er-left:1px solid rgb(204,204,204); padding-left:1ex">
<div dir=3D"ltr">
<div class=3D"x_gmail_default" style=3D"color:rgb(51,51,255)">Probably blow=
n gasket at the 3-4 bridge.&nbsp; My original head suffered from erosion of=
 the metal at the 1-2 bridge, allowing the gasket to blow.&nbsp; I had it b=
uilt up enough to work for a while&nbsp;but eventually
 replaced the head with a DWR AL model.&nbsp;&nbsp;</div>
<div class=3D"x_gmail_default" style=3D"color:rgb(51,51,255)"><br>
</div>
<div class=3D"x_gmail_default" style=3D"color:rgb(51,51,255)">Best--Michael=
 Oritt</div>
</div>
<br>
<div class=3D"x_gmail_quote">
<div dir=3D"ltr" class=3D"x_gmail_attr">On Mon, Jan 25, 2021 at 4:55 AM Ala=
n Seigrist &lt;<a href=3D"mailto:healey.nut@gmail.com"; target=3D"_blank">he=
aley.nut@gmail.com</a>&gt; wrote:<br>
</div>
<blockquote class=3D"x_gmail_quote" style=3D"margin:0px 0px 0px 0.8ex; bord=
er-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.&nbsp; So I took a compression teste=
r 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.&nbsp; Then when 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?&nbsp; as far as=
 I'm aware, these heads usually crack between 2 &amp; 3, correct?</div>
<div><br>
</div>
<div>TIA<br>
<br>
Alan</div>
</div>
_______________________________________________<br>
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