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Moss and other vendors offer a shim steel gasket that can be used alone but
was (I think) originally used by Triumph to lower compression in parts of
the world where that was required (due to available fuels):
Remember the steel "Corgasyl" head gasket that Triumph offered for
> competition use and as part of the compression lowering kit for "tropical=
"
> use? A version of this is still available for 89mm engines, but may be us=
ed
> with smaller bores sizes.
>
https://mossmotors.com/head-gasket-steel-shim-020-thick-for-83mm-86mm-87mm-=
89mm?utm_source=3Dfeed&utm_medium=3Dfree&utm_campaign=3Dshopping&gclid=3DCj=
wKCAjwx9_4BRAHEiwApAt0ztFBWB82Rql8-_ZZtAbC_9ZEbmiXjzdQm4FwP8jkOg9_ULxs4x459=
xoC6dUQAvD_BwE
On Wed, Jul 22, 2020 at 8:51 AM <jpaynepbr@cox.net> wrote:
> I'm going to be installing a Judson Supercharger on my TR3 this fall. I
> have acquired the rebuilt supercharger, manifold, carb and a specially
> built dizzy.
>
> I'll need some sort of thicker head gasket to lower the compression from
> its current 9.3/1 to a more suitable 8.7 (ish)/1 Anybody have any idea
> where to get it and what to use for the thicker head gasket?
>
>
> -----Original Message-----
> From: Triumphs <triumphs-bounces@autox.team.net> On Behalf Of bill beeche=
r
> Sent: Tuesday, July 21, 2020 6:45 PM
> To: Jerry Van Vlack <jerryvv@roadrunner.com>
> Cc: triumphs@autox.team.net
> Subject: Re: [TR] Copper head gasket: Which side up?
>
> My bad, that part number is for a lower end set from BPNW.
> Bill
>
> #dontkillgrandma
>
> On Jul 21, 2020, at 6:49 PM, bill beecher <notakitcar@yahoo.com> wrote:
>
> =EF=BB=BFThank you all, smooth side up it is.
> Gasket and 87mm pistons and liners all came from TRF, Lucas p/n EC510L.
> Head and deck are stock.
>
> Tony, yes the edge on the water holes are rolled, so I=E2=80=99ll leave t=
hem
> alone.
>
> Cheers,
> Bill B
>
>
> #dontkillgrandma
>
> On Jul 21, 2020, at 6:30 PM, Jerry Van Vlack <jerryvv@roadrunner.com>
> wrote:
>
> =EF=BB=BFAdding to what Tony says, the gasket should NOT protrude into th=
e bore.
>
> Questions:
> What is the bore? 86, 87 or 89 mm?
> Where did the gasket come from and what brand is it? What is it's Part
> Number?
> How much is milled off the head?
>
> I've been through this and the only thing working for me is to find an
> original AE 330 copper gasket. NOT the Repro 330 gasket. The originals ar=
e
> getting hard to find.
>
> And be certain to re-torque the head.
>
> With .070 milled off the head and 87mm liners and an original AE 330 HG
> I'm able to keep the gasket out of the combustion chamber.
>
> Your results may differ.
>
> JVV
>
> -----Original Message----- From: Tony Drews
> Sent: Tuesday, July 21, 2020 6:05 PM
> To: triumphs@autox.team.net
> Subject: Re: [TR] Copper head gasket: Which side up?
>
> Smooth side goes up.
>
> It's better if the gasket doesn't protrude, hard to do if the head has
> been milled at all.
>
> I've not messed with the water holes, no firm answer on that one. If the
> edge of those is rolled over I'd leave alone, if it exposes the composite
> part of the gasket it's OK to open up a bit.
>
> > On 7/21/2020 4:57 PM, bill beecher wrote:
> > Reassembling the TR3 motor for the old Morgan and I am dry fitting the
> head gasket. Two questions:
> > 1. Which side goes up, smooth or the rolled over side?
> > 2. On a couple cylinders the gasket protrudes into the bore by about
> 1mm, is this OK?
> > 3. At the front the holes in the gasket do not match exactly with the
> > water passage, is it OK to open those up just a bit? (The back aligns
> > perfectly)
> >
> > Thanks,
> > Bill B
> > TS74313E
> >
> > #dontkillgrandma
> > ** triumphs@autox.team.net **
> >
> > Donate: http://www.team.net/donate.html
> > Archive: http://www.team.net/pipermail/triumphs
> > http://www.team.net/archive
> >
> > Unsubscribe/Manage:
> > http://autox.team.net/mailman/options/triumphs/tony@tonydrews.com
> ** triumphs@autox.team.net **
>
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<div dir=3D"ltr">Moss and other vendors offer a shim steel gasket that can =
be used alone but was (I think) originally used by Triumph to lower compres=
sion in parts of the world where that was required (due to available fuels)=
:<div><br></div><div><blockquote class=3D"gmail_quote" style=3D"margin:0px =
0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><spa=
n style=3D"color:rgb(99,99,99);font-family:Lato,"Helvetica Neue",=
Arial,sans-serif;font-size:14px">Remember the steel "Corgasyl" he=
ad gasket that Triumph offered for competition use and as part of the compr=
ession lowering kit for "tropical" use? A version of this is stil=
l available for 89mm engines, but may be used with smaller bores sizes.</sp=
an>=C2=A0=C2=A0<br></blockquote><div><br></div><div><a href=3D"https://moss=
motors.com/head-gasket-steel-shim-020-thick-for-83mm-86mm-87mm-89mm?utm_sou=
rce=3Dfeed&utm_medium=3Dfree&utm_campaign=3Dshopping&gclid=3DCj=
wKCAjwx9_4BRAHEiwApAt0ztFBWB82Rql8-_ZZtAbC_9ZEbmiXjzdQm4FwP8jkOg9_ULxs4x459=
xoC6dUQAvD_BwE">https://mossmotors.com/head-gasket-steel-shim-020-thick-for=
-83mm-86mm-87mm-89mm?utm_source=3Dfeed&utm_medium=3Dfree&utm_campai=
gn=3Dshopping&gclid=3DCjwKCAjwx9_4BRAHEiwApAt0ztFBWB82Rql8-_ZZtAbC_9ZEb=
miXjzdQm4FwP8jkOg9_ULxs4x459xoC6dUQAvD_BwE</a>=C2=A0=C2=A0<br></div></div><=
/div><br><div class=3D"gmail_quote"><div dir=3D"ltr" class=3D"gmail_attr">O=
n Wed, Jul 22, 2020 at 8:51 AM <<a href=3D"mailto:jpaynepbr@cox.net";>jpa=
ynepbr@cox.net</a>> wrote:<br></div><blockquote class=3D"gmail_quote" st=
yle=3D"margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padd=
ing-left:1ex">I'm going to be installing a Judson Supercharger on my TR=
3 this fall.=C2=A0 I have acquired the rebuilt supercharger, manifold, carb=
and a specially built dizzy.<br>
<br>
I'll need some sort of thicker head gasket to lower the compression fro=
m its current 9.3/1 to a more suitable 8.7 (ish)/1=C2=A0 =C2=A0Anybody have=
any idea where to get it and what to use for the thicker head gasket?<br>
<br>
<br>
-----Original Message-----<br>
From: Triumphs <<a href=3D"mailto:triumphs-bounces@autox.team.net"; targe=
t=3D"_blank">triumphs-bounces@autox.team.net</a>> On Behalf Of bill beec=
her<br>
Sent: Tuesday, July 21, 2020 6:45 PM<br>
To: Jerry Van Vlack <<a href=3D"mailto:jerryvv@roadrunner.com"; target=3D=
"_blank">jerryvv@roadrunner.com</a>><br>
Cc: <a href=3D"mailto:triumphs@autox.team.net"; target=3D"_blank">triumphs@a=
utox.team.net</a><br>
Subject: Re: [TR] Copper head gasket: Which side up?<br>
<br>
My bad, that part number is for a lower end set from BPNW. <br>
Bill<br>
<br>
#dontkillgrandma<br>
<br>
On Jul 21, 2020, at 6:49 PM, bill beecher <<a href=3D"mailto:notakitcar@=
yahoo.com" target=3D"_blank">notakitcar@yahoo.com</a>> wrote:<br>
<br>
=EF=BB=BFThank you all, smooth side up it is.=C2=A0 <br>
Gasket and 87mm pistons and liners all came from TRF, Lucas p/n EC510L.=C2=
=A0 =C2=A0Head and deck are stock. <br>
<br>
Tony, yes the edge on the water holes are rolled, so I=E2=80=99ll leave the=
m alone. <br>
<br>
Cheers,<br>
Bill B<br>
<br>
<br>
#dontkillgrandma<br>
<br>
On Jul 21, 2020, at 6:30 PM, Jerry Van Vlack <<a href=3D"mailto:jerryvv@=
roadrunner.com" target=3D"_blank">jerryvv@roadrunner.com</a>> wrote:<br>
<br>
=EF=BB=BFAdding to what Tony says, the gasket should NOT protrude into the =
bore.<br>
<br>
Questions:<br>
What is the bore? 86, 87 or 89 mm?<br>
Where did the gasket come from and what brand is it? What is it's Part =
Number?<br>
How much is milled off the head?<br>
<br>
I've been through this and the only thing working for me is to find an =
original AE 330 copper gasket. NOT the Repro 330 gasket. The originals are =
getting hard to find.<br>
<br>
And be certain to re-torque the head.<br>
<br>
With .070 milled off the head and 87mm liners and an original AE 330 HG I&#=
39;m able to keep the gasket out of the combustion chamber.<br>
<br>
Your results may differ.<br>
<br>
JVV<br>
<br>
-----Original Message----- From: Tony Drews<br>
Sent: Tuesday, July 21, 2020 6:05 PM<br>
To: <a href=3D"mailto:triumphs@autox.team.net"; target=3D"_blank">triumphs@a=
utox.team.net</a><br>
Subject: Re: [TR] Copper head gasket: Which side up?<br>
<br>
Smooth side goes up.<br>
<br>
It's better if the gasket doesn't protrude, hard to do if the head =
has been milled at all.<br>
<br>
I've not messed with the water holes, no firm answer on that one.=C2=A0=
If the edge of those is rolled over I'd leave alone, if it exposes the=
composite part of the gasket it's OK to open up a bit.<br>
<br>
> On 7/21/2020 4:57 PM, bill beecher wrote:<br>
> Reassembling the TR3 motor for the old Morgan and I am dry fitting the=
head gasket. Two questions:<br>
> 1. Which side goes up, smooth or the rolled over side?<br>
> 2. On a couple cylinders the gasket protrudes into the bore by about 1=
mm, is this OK?<br>
> 3. At the front the holes in the gasket do not match exactly with the =
<br>
> water passage, is it OK to open those up just a bit?=C2=A0 (The back a=
ligns <br>
> perfectly)<br>
> <br>
> Thanks,<br>
> Bill B<br>
> TS74313E<br>
> <br>
> #dontkillgrandma<br>
> ** <a href=3D"mailto:triumphs@autox.team.net"; target=3D"_blank">triump=
hs@autox.team.net</a> **<br>
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