Subject: [Fot] Cometic Head Gaskets

From: Jack Wheeler <[email-masked]>
Date: Fri, 6 Nov 2015 19:13:57 +0000 (UTC)

--===============5050454514399393991==
	boundary="----=_Part_891687_866160583.1446837237792"

------=_Part_891687_866160583.1446837237792
Content-Transfer-Encoding: quoted-printable

Does anyone have any experience using Cometic head gaskets with the TR-3/4 =
engines?=C2=A0 I have a slightly modified (10:1 compression with a cam) eng=
ine in my street TR-3.=C2=A0 I built the engine about 2-3 years ago, and it=
 runs great.=C2=A0 However, it has always used water and eventually over he=
ats, especially on real hot days, which we get a lot of in North Carolina.=
=C2=A0 I have run a test on it, and the engine definitely has a compression=
 leak.
So, I removed the head and inspected the gasket.=C2=A0 It is the stock copp=
er gasket.=C2=A0 There is no obvious indication of a leak around the gasket=
.=C2=A0 I checked the liner protrusion and all were within spec (.003" - .0=
05").=C2=A0 I have always used Gaskacinch sealant, and have never had one l=
eak before.
A friend of mine, who builds a lot of American engines (racing and otherwis=
e) suggested I look into a Cometic head gasket.=C2=A0 They are supposed to =
seal better than a copper gasket, though I don't know why.=C2=A0 Sure enoug=
h, I looked up their web site and they have a gasket listed for the TR-4 en=
gine (also one for the TR-6).=C2=A0 My only concern is that it is listed as=
 88MM bore.=C2=A0 I am using a new 87MM piston and liner set.
If anyone has had any experience with these gaskets on the TR-3/4 engines, =
I would really appreciate any feedback, both positive and negative.=C2=A0 T=
hanks.
Jack Wheeler

------=_Part_891687_866160583.1446837237792
Content-Transfer-Encoding: quoted-printable

<html><head></head><body><div style=3D"color:#000; background-color:#fff; f=
ont-family:HelveticaNeue, Helvetica Neue, Helvetica, Arial, Lucida Grande, =
sans-serif;font-size:16px"><div id=3D"yui_3_16_0_1_1446816007195_26397">Doe=
s anyone have any experience using Cometic head gaskets with the TR-3/4 eng=
ines?&nbsp; I have a slightly modified (10:1 compression with a cam) engine=
 in my street TR-3.&nbsp; I built the engine about 2-3 years ago, and it ru=
ns great.&nbsp; However, it has always used water and eventually over heats=
, especially on real hot days, which we get a lot of in North Carolina.&nbs=
p; I have run a test on it, and the engine definitely has a compression lea=
k.</div><div id=3D"yui_3_16_0_1_1446816007195_26694"><br></div><div id=3D"y=
ui_3_16_0_1_1446816007195_26695">So, I removed the head and inspected the g=
asket.&nbsp; It is the stock copper gasket.&nbsp; There is no obvious indic=
ation of a leak around the gasket.&nbsp; I checked the liner protrusion and=
 all were within spec (.003" - .005").&nbsp; I have always used Gaskacinch =
sealant, and have never had one leak before.</div><div id=3D"yui_3_16_0_1_1=
446816007195_26696"><br></div><div id=3D"yui_3_16_0_1_1446816007195_26697" =
dir=3D"ltr">A friend of mine, who builds a lot of American engines (racing =
and otherwise) suggested I look into a Cometic head gasket.&nbsp; They are =
supposed to seal better than a copper gasket, though I don't know why.&nbsp=
; Sure enough, I looked up their web site and they have a gasket listed for=
 the TR-4 engine (also one for the TR-6).&nbsp; My only concern is that it =
is listed as 88MM bore.&nbsp; I am using a new 87MM piston and liner set.</=
div><div id=3D"yui_3_16_0_1_1446816007195_26698" dir=3D"ltr"><br></div><div=
 id=3D"yui_3_16_0_1_1446816007195_26699" dir=3D"ltr">If anyone has had any =
experience with these gaskets on the TR-3/4 engines, I would really appreci=
ate any feedback, both positive and negative.&nbsp; Thanks.</div><div id=3D=
"yui_3_16_0_1_1446816007195_26721" dir=3D"ltr"><br></div><div id=3D"yui_3_1=
6_0_1_1446816007195_26722" dir=3D"ltr">Jack Wheeler<br></div></div></body><=
/html>
------=_Part_891687_866160583.1446837237792--

--===============5050454514399393991==
Content-Transfer-Encoding: 7bit
Content-Disposition: inline

_______________________________________________
[email-masked]

http://www.fot-racing.com

Archive: http://www.team.net/archive

--===============5050454514399393991==--

---

From: Tony Drews <[email-masked]>
Date: Fri, 06 Nov 2015 13:51:00 -0600

They may work, or may not.  The biggest problem is that the fire ring 
doesn't have the "mouse ears" that the composite gasket does, so if 
the head is milled and the intake valve pocket is uncovered, the fire 
ring intrudes into that.  At Road America, Joe / Shawn's car had a 
major head gasket leak and the source was the intake valve pocked on 
#4 cylinder going slightly outside the fire ring on that gasket.  Pop 
the head, drop a Payen composite on and we had a GREAT battle afterwards.

I'm running the same gasket this year, will be going back to the 
composite one.  I think I've got a very slight head gasket leak, I 
always end up with pressure in the radiator after a race weekend.  If 
the head has less milled and still has the intake valve shrouded they 
should work much better.

Cheers, Tony Drews

At 01:13 PM 11/6/2015, Jack Wheeler wrote:
>Does anyone have any experience using Cometic head gaskets with the 
>TR-3/4 engines?  I have a slightly modified (10:1 compression with a 
>cam) engine in my street TR-3.  I built the engine about 2-3 years 
>ago, and it runs great.  However, it has always used water and 
>eventually over heats, especially on real hot days, which we get a 
>lot of in North Carolina.  I have run a test on it, and the engine 
>definitely has a compression leak.
>
>So, I removed the head and inspected the gasket.  It is the stock 
>copper gasket.  There is no obvious indication of a leak around the 
>gasket.  I checked the liner protrusion and all were within spec 
>(.003" - .005").  I have always used Gaskacinch sealant, and have 
>never had one leak before.
>
>A friend of mine, who builds a lot of American engines (racing and 
>otherwise) suggested I look into a Cometic head gasket.  They are 
>supposed to seal better than a copper gasket, though I don't know 
>why.  Sure enough, I looked up their web site and they have a gasket 
>listed for the TR-4 engine (also one for the TR-6).  My only concern 
>is that it is listed as 88MM bore.  I am using a new 87MM piston and liner set.
>
>If anyone has had any experience with these gaskets on the TR-3/4 
>engines, I would really appreciate any feedback, both positive and 
>negative.  Thanks.
>
>Jack Wheeler
>Donate: http://www.team.net/donate.html
>Forums: http://www.team.net/forums
>Unsubscribe/Manage: 
>http://autox.team.net/mailman/options/fot/[email-masked]

---

From: "J.C. Hassall" <[email-masked]>
Date: Fri, 6 Nov 2015 15:10:51 -0500

--===============8692106641737992716==
	boundary=Apple-Mail-D6EBC1D6-C05F-4273-A403-6540B9261D23
Content-Transfer-Encoding: 7bit

--Apple-Mail-D6EBC1D6-C05F-4273-A403-6540B9261D23
	charset=us-ascii
Content-Transfer-Encoding: quoted-printable

Jack

I've been running their gasket in my TR4 (89mm) for 3-4 years, am very happy=
 with it. I installed it dry

jim

Fat-thumbed from my iPhone

> On Nov 6, 2015, at 2:13 PM, Jack Wheeler <[email-masked]> wrote:
>=20
> Does anyone have any experience using Cometic head gaskets with the TR-3/4=
 engines?  I have a slightly modified (10:1 compression with a cam) engine i=
n my street TR-3.  I built the engine about 2-3 years ago, and it runs great=
.  However, it has always used water and eventually over heats, especially o=
n real hot days, which we get a lot of in North Carolina.  I have run a test=
 on it, and the engine definitely has a compression leak.
>=20
> So, I removed the head and inspected the gasket.  It is the stock copper g=
asket.  There is no obvious indication of a leak around the gasket.  I check=
ed the liner protrusion and all were within spec (.003" - .005").  I have al=
ways used Gaskacinch sealant, and have never had one leak before.
>=20
> A friend of mine, who builds a lot of American engines (racing and otherwi=
se) suggested I look into a Cometic head gasket.  They are supposed to seal b=
etter than a copper gasket, though I don't know why.  Sure enough, I looked u=
p their web site and they have a gasket listed for the TR-4 engine (also one=
 for the TR-6).  My only concern is that it is listed as 88MM bore.  I am us=
ing a new 87MM piston and liner set.
>=20
> If anyone has had any experience with these gaskets on the TR-3/4 engines,=
 I would really appreciate any feedback, both positive and negative.  Thanks=
.
>=20
>=20
>=20
> Unsubscribe/Manage: http://autox.team.net/mailman/options/fot/jhassall@gma=
il.com
>=20
>=20

--Apple-Mail-D6EBC1D6-C05F-4273-A403-6540B9261D23
	charset=utf-8
Content-Transfer-Encoding: quoted-printable

<html><head><meta http-equiv=3D"content-type" content=3D"text/html; charset=3D=
utf-8"></head><body dir=3D"auto"><div>Jack</div><div id=3D"AppleMailSignatur=
e"><br></div><div id=3D"AppleMailSignature">I've been running their gasket i=
n my TR4 (89mm) for 3-4 years, am very happy with it. I installed it dry</di=
v><div id=3D"AppleMailSignature"><br></div><div id=3D"AppleMailSignature">ji=
m<br><br>Fat-thumbed from my iPhone</div><div><br>On Nov 6, 2015, at 2:13 PM=
, Jack Wheeler &lt;<a href=3D"mailto:[email-masked]">jwheeler1947@ya=
hoo.com</a>&gt; wrote:<br><br></div><blockquote type=3D"cite"><div><div styl=
e=3D"color:#000; background-color:#fff; font-family:HelveticaNeue, Helvetica=
 Neue, Helvetica, Arial, Lucida Grande, sans-serif;font-size:16px"><div id=3D=
"yui_3_16_0_1_1446816007195_26397">Does anyone have any experience using Com=
etic head gaskets with the TR-3/4 engines?&nbsp; I have a slightly modified (=
10:1 compression with a cam) engine in my street TR-3.&nbsp; I built the eng=
ine about 2-3 years ago, and it runs great.&nbsp; However, it has always use=
d water and eventually over heats, especially on real hot days, which we get=
 a lot of in North Carolina.&nbsp; I have run a test on it, and the engine d=
efinitely has a compression leak.</div><div id=3D"yui_3_16_0_1_1446816007195=
_26694"><br></div><div id=3D"yui_3_16_0_1_1446816007195_26695">So, I removed=
 the head and inspected the gasket.&nbsp; It is the stock copper gasket.&nbs=
p; There is no obvious indication of a leak around the gasket.&nbsp; I check=
ed the liner protrusion and all were within spec (.003" - .005").&nbsp; I ha=
ve always used Gaskacinch sealant, and have never had one leak before.</div>=
<div id=3D"yui_3_16_0_1_1446816007195_26696"><br></div><div id=3D"yui_3_16_0=
_1_1446816007195_26697" dir=3D"ltr">A friend of mine, who builds a lot of Am=
erican engines (racing and otherwise) suggested I look into a Cometic head g=
asket.&nbsp; They are supposed to seal better than a copper gasket, though I=
 don't know why.&nbsp; Sure enough, I looked up their web site and they have=
 a gasket listed for the TR-4 engine (also one for the TR-6).&nbsp; My only c=
oncern is that it is listed as 88MM bore.&nbsp; I am using a new 87MM piston=
 and liner set.</div><div id=3D"yui_3_16_0_1_1446816007195_26698" dir=3D"ltr=
"><br></div><div id=3D"yui_3_16_0_1_1446816007195_26699" dir=3D"ltr">If anyo=
ne has had any experience with these gaskets on the TR-3/4 engines, I would r=
eally appreciate any feedback, both positive and negative.&nbsp; Thanks.</di=
v><div id=3D"yui_3_16_0_1_1446816007195_26721" dir=3D"ltr"><br></div><div id=
=3D"yui_3_16_0_1_1446816007195_26722" dir=3D"ltr">Jack Wheeler<br></div></di=
v></div></blockquote><blockquote type=3D"cite"><div><span>__________________=
_____________________________</span><br><span><a href=3D"mailto:[email-masked]=
am.net">[email-masked]</a></span><br><span></span><br><span><a href=3D"h=
ttp://www.fot-racing.com">http://www.fot-racing.com</a></span><br><span></sp=
an><br><span>Donate: <a href=3D"http://www.team.net/donate.html">http://www.=
team.net/donate.html</a></span><br><span>Archive: <a href=3D"http://www.team=
.net/archive">http://www.team.net/archive</a></span><br><span>Forums: <a hre=
f=3D"http://www.team.net/forums">http://www.team.net/forums</a></span><br><s=
pan>Unsubscribe/Manage: <a href=3D"http://autox.team.net/mailman/options/fot=
/[email-masked]">http://autox.team.net/mailman/options/fot/jhassall@gmai=
l.com</a></span><br><span></span><br><span></span><br></div></blockquote></b=
ody></html>=

--Apple-Mail-D6EBC1D6-C05F-4273-A403-6540B9261D23--

--===============8692106641737992716==
Content-Transfer-Encoding: 7bit
Content-Disposition: inline

--===============8692106641737992716==--