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Re: [Fot] Best head gasket revisited

To: "Mike Harmuth" <ofracer@gmail.com>
Subject: Re: [Fot] Best head gasket revisited
From: Jerry Van Vlack via Fot <fot@autox.team.net>
Date: Sun, 25 Oct 2020 09:10:34 -0400
Cc: Joe Boruch <jaboruch@yahoo.com>, FOT List <fot@autox.team.net>
Delivered-to: mharc@autox.team.net
Delivered-to: fot@autox.team.net
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That=E2=80=99s an excellent point to be considered too.
JVV

From: Mike Harmuth=20
Sent: Sunday, October 25, 2020 9:00 AM
To: Jerry Van Vlack=20
Cc: Joe Boruch ; FOT List=20
Subject: Re: [Fot] Best head gasket revisited

Cometic will do a custom gasket for a minimal one time charge. I've had =
a Spitfire gasket made thick to make up for an over zealous block =
milling and another one with a wider piston opening. Once they make the =
design changes, they send you a PDF with the dimensions listed for your =
approval. When it's OK, they assign a part number and CNC it out. Design =
turn around is about a week and another week to make it. After the first =
one is made, just call up and order replacements with your customer =
number, no extra charges.=20

mike h

On Sun, Oct 25, 2020 at 8:41 AM Jerry Van Vlack via Fot =
<fot@autox.team.net> wrote:

  Joe, my experience is only with a hot street engine but worth =
expressing. 87mm pistons and liners, .090 milled from head and Kastner D =
cam.
  I ran a stock AE330 for almost 40 years with no issues then I did a =
valve job and hardened EX seats because of recession in #4 EX valve =
seat. The shop took another approx. .010 off the head (so now approx. =
.100 off the head) . I used the Cometic 91mm gasket and it burned =
through at #4 in 2 years of street driving. Maybe 15,000 miles.
  The engine was tired by this time having been rebuilt in the =
80=E2=80=99s. I rebuilt the engine and decided to use another AE330 with =
a new head at .070 milled. That gasket leaked because of my dumb mistake =
not re-torqueing after a few heat cycles. Replaced with another AE330 =
and now have approx. 10,000 miles with no issues. I did re-torque a =
couple of times.

  Original AE330 copper gaskets are getting hard to find but =
occasionally show up on EBay, I just bought one. The =
=E2=80=9Cnew=E2=80=9D repro AE 330 copper gaskets are not the same =
especially in the valve pocket area, I=E2=80=99ve compared them.

  My point in al of this is take a look at how an original AE330 fits to =
your head and block and give it consideration, you might find it =
acceptable. Or continue to use the steel with thin copper wire that =
you=E2=80=99ve used. I am not a fan of the Cometic but admittedly mine =
was used on a street engine with no plans to change it every year. =
Tony=E2=80=99s experience is worthy of attention, he hammers that engine =
pretty hard.

  JVV

  From: Joe Boruch via Fot=20
  Sent: Saturday, October 24, 2020 9:25 PM
  To: FOT List=20
  Subject: [Fot] Best head gasket revisited

  I was not receiving list emails for a while, so I missed the =
conversation a few months ago.=20

  For those of you using the composite or even Cometic gaskets, have you =
done much relieving around the intake valves?  I have not found any such =
gasket that would not protrude out into the combustion chamber.  I even =
bought one from BPNW that was good for up to 92mm bore, but it still =
protruded.  I have been using steel shim head gaskets with copper wire =
o-rings in the fire rings, but would like a simpler set up.  I have held =
off on putting my TR3 engine back together for years (while playing with =
S2000s and Miatas) waiting for a better head gasket.  Joe B

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<BODY dir=3Dltr>
<DIV dir=3Dltr>
<DIV style=3D"FONT-SIZE: 12pt; FONT-FAMILY: 'Calibri'; COLOR: #000000">
<DIV>That=E2=80=99s an excellent point to be considered too.</DIV>
<DIV>JVV</DIV>
<DIV=20
style=3D'FONT-SIZE: small; TEXT-DECORATION: none; FONT-FAMILY: =
"Calibri"; FONT-WEIGHT: normal; COLOR: #000000; FONT-STYLE: normal; =
DISPLAY: inline'>
<DIV style=3D"FONT: 10pt tahoma">
<DIV>&nbsp;</DIV>
<DIV style=3D"BACKGROUND: #f5f5f5">
<DIV style=3D"font-color: black"><B>From:</B> <A =
title=3Dofracer@gmail.com>Mike=20
Harmuth</A> </DIV>
<DIV><B>Sent:</B> Sunday, October 25, 2020 9:00 AM</DIV>
<DIV><B>To:</B> <A title=3Djerryvv@roadrunner.com>Jerry Van Vlack</A> =
</DIV>
<DIV><B>Cc:</B> <A title=3Djaboruch@yahoo.com>Joe Boruch</A> ; <A=20
title=3Dfot@autox.team.net>FOT List</A> </DIV>
<DIV><B>Subject:</B> Re: [Fot] Best head gasket =
revisited</DIV></DIV></DIV>
<DIV>&nbsp;</DIV></DIV>
<DIV=20
style=3D'FONT-SIZE: small; TEXT-DECORATION: none; FONT-FAMILY: =
"Calibri"; FONT-WEIGHT: normal; COLOR: #000000; FONT-STYLE: normal; =
DISPLAY: inline'>
<DIV dir=3Dltr>Cometic will do a custom gasket for a minimal one time =
charge. I've=20
had a Spitfire gasket made thick to make up for an over zealous block =
milling=20
and another one with a wider piston opening. Once they make the design =
changes,=20
they send you a PDF with the dimensions listed for your approval. When =
it's OK,=20
they assign a part number and CNC it out. Design turn around is about a =
week and=20
another week to make it. After the first one is made, just call up and =
order=20
replacements with your customer number, no extra charges.=20
<DIV>&nbsp;</DIV>
<DIV>mike h</DIV></DIV>
<DIV>&nbsp;</DIV>
<DIV class=3Dgmail_quote>
<DIV class=3Dgmail_attr dir=3Dltr>On Sun, Oct 25, 2020 at 8:41 AM Jerry =
Van Vlack=20
via Fot &lt;<A>fot@autox.team.net</A>&gt; wrote:<BR></DIV>
<BLOCKQUOTE class=3Dgmail_quote=20
style=3D"PADDING-LEFT: 1ex; BORDER-LEFT: rgb(204,204,204) 1px solid; =
MARGIN: 0px 0px 0px 0.8ex">
  <DIV dir=3Dltr>
  <DIV dir=3Dltr>
  <DIV style=3D"FONT-SIZE: 12pt; FONT-FAMILY: calibri; COLOR: =
rgb(0,0,0)">
  <DIV>Joe, my experience is only with a hot street engine but worth =
expressing.=20
  87mm pistons and liners, .090 milled from head and Kastner D =
cam.</DIV>
  <DIV>I ran a stock AE330 for almost 40 years with no issues then I did =
a valve=20
  job and hardened EX seats because of recession in #4 EX valve seat. =
The shop=20
  took another approx. .010 off the head (so now approx. .100 off the =
head) . I=20
  used the Cometic 91mm gasket and it burned through at #4 in 2 years of =
street=20
  driving. Maybe 15,000 miles.</DIV>
  <DIV>The engine was tired by this time having been rebuilt in the =
80=E2=80=99s. I=20
  rebuilt the engine and decided to use another AE330 with a new head at =
.070=20
  milled. That gasket leaked because of my dumb mistake not re-torqueing =
after a=20
  few heat cycles. Replaced with another AE330 and now have approx. =
10,000 miles=20
  with no issues. I did re-torque a couple of times.</DIV>
  <DIV>&nbsp;</DIV>
  <DIV>Original AE330 copper gaskets are getting hard to find but =
occasionally=20
  show up on EBay, I just bought one. The =E2=80=9Cnew=E2=80=9D repro AE =
330 copper gaskets are=20
  not the same especially in the valve pocket area, I=E2=80=99ve =
compared them.</DIV>
  <DIV>&nbsp;</DIV>
  <DIV>My point in al of this is take a look at how an original AE330 =
fits to=20
  your head and block and give it consideration, you might find it =
acceptable.=20
  Or continue to use the steel with thin copper wire that you=E2=80=99ve =
used. I am not=20
  a fan of the Cometic but admittedly mine was used on a street engine =
with no=20
  plans to change it every year. Tony=E2=80=99s experience is worthy of =
attention, he=20
  hammers that engine pretty hard.</DIV>
  <DIV>&nbsp;</DIV>
  <DIV>JVV</DIV>
  <DIV=20
  style=3D"FONT-SIZE: small; TEXT-DECORATION: none; FONT-FAMILY: =
calibri; FONT-WEIGHT: normal; COLOR: rgb(0,0,0); FONT-STYLE: normal; =
DISPLAY: inline">
  <DIV style=3D"FONT: 10pt tahoma">
  <DIV>&nbsp;</DIV>
  <DIV style=3D"BACKGROUND: rgb(245,245,245)">
  <DIV><B>From:</B> <A title=3Dfot@autox.team.net>Joe Boruch via Fot</A> =
</DIV>
  <DIV><B>Sent:</B> Saturday, October 24, 2020 9:25 PM</DIV>
  <DIV><B>To:</B> <A title=3Dfot@autox.team.net>FOT List</A> </DIV>
  <DIV><B>Subject:</B> [Fot] Best head gasket =
revisited</DIV></DIV></DIV>
  <DIV>&nbsp;</DIV></DIV>
  <DIV=20
  style=3D"FONT-SIZE: small; TEXT-DECORATION: none; FONT-FAMILY: =
calibri; FONT-WEIGHT: normal; COLOR: rgb(0,0,0); FONT-STYLE: normal; =
DISPLAY: inline">
  <DIV=20
  style=3D'FONT-SIZE: 13px; FONT-FAMILY: "helvetica =
neue",helvetica,arial,sans-serif'>
  <DIV dir=3Dltr>I was not receiving list emails for a while, so I =
missed the=20
  conversation a few months ago. </DIV>
  <DIV dir=3Dltr>&nbsp;</DIV>
  <DIV dir=3Dltr>For those of you using the composite or even Cometic =
gaskets,=20
  have you done much relieving around the intake valves?&nbsp; I have =
not found=20
  any such gasket that would not protrude out into the combustion =
chamber.&nbsp;=20
  I even bought one from BPNW that was good for up to 92mm bore, but it =
still=20
  protruded.&nbsp; I have been using steel shim head gaskets with copper =
wire=20
  o-rings in the fire rings, but would like a simpler set up.&nbsp; I =
have held=20
  off on putting my TR3 engine back together for years (while playing =
with=20
  S2000s and Miatas) waiting for a better head gasket.&nbsp; Joe =
B</DIV></DIV>
  <HR>
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