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Michael;
It is also critical that the liners protrude above the block by .005 to .007=
=E2=80=9D to ensure a good seal. This is before any compression of the figur=
e 8 gaskets. If the protrusion is less, the top of the block should be mill=
ed to achieve the proper protrusion.
If you have milled the head more than about .060 you should consider staking=
the head around the bores between cylinders two and three per the Kastner b=
ook. It is weak in this area.
The rest of the advice you=E2=80=99ve received is pretty sound, but I have n=
ot tried all of it.
Depending on how much you=E2=80=99ve milled the head and what you have done w=
ith the combustion chambers, you may need to reshape the fire ring area of y=
our gasket. It must not protrude at all into the combustion chamber.
Phil
Sent from my iPhone
> On Jul 31, 2020, at 6:25 PM, Jack Wheeler via Fot <fot@autox.team.net> wro=
te:
>=20
> =EF=BB=BF
> I've read all of the comments, but haven't heard anything about Cometic. I=
had rebuilt my TR-3 engine a number of years ago, using the stock head gask=
et. I built the engine as I would have built one of my race engines in the d=
ay, except with a milder cam and less compression (10.5:1). =46rom day 1 it=
never really ran right. I began to suspect coolant was getting into the co=
mbustion chamber, so I bought one of those test kits where you pull some coo=
lant out while the engine is running and add a chemical which tests for hydr=
ocarbons. Sure enough, hydrocarbons were getting into my coolant system. T=
hat says bad head gasket or crack in the head. Since I'd had the head magna=
fluxed during the rebuild, I assumed it was the head gasket.
>=20
> I began asking around about where I could get a good gasket. A guy at a l=
ocal engine shop (primarily Ford engines) recommended Cometic. I had never h=
eard of them, and told him the engine was over 50 years old, so surely they w=
ould not make a gasket for it. He encouraged me to check the internet, and s=
ure enough, they make a whole bunch of them for the TR engine. It's been a f=
ew years ago, but as I recall, they had gaskets for different bores (i.e. 83=
MM, 86MM, 87MM, etc.) and you could order different thicknesses. They stack=
ed steel gaskets on top of each other to get to the thickness desired. I th=
ink I ordered a 3 layer gasket. It all sounded a little fishy, but based on=
the strong recommendation I had received, I ordered one.
>=20
> I removed the bad head gasket and replaced it with the Cometic gasket, and=
suddenly the engine ran great. I have put almost 7.000 miles on the car si=
nce then and haven't had a problem. It runs cool (even on 95 degree days, a=
s tested recently), pulls strong, and no sign of any coolant leaks. By the w=
ay, I noticed someone else recommended Hylomar gasket cement. I also used t=
hat. A light coat on all sealing surfaces does the trick. Do not spray a t=
hick coat. Below is the link to the Cometic web site. Check it out.
>=20
> Cometic Gasket - Sealed Under Extreme Pressure
>=20
> Cometic Gasket - Sealed Under Extreme Pressure
> Cometic Gasket supplies hi-performance gaskets for a variety of motorsport=
s markets: ATV, Drag Race, Domestic Au...
> Jack
>=20
>=20
>=20
>=20
>=20
> On Friday, July 31, 2020, 5:27:49 PM EDT, mleccese1--- via Fot <fot@autox.=
team.net> wrote:
>=20
>=20
> Phil, Dave,
>=20
> I may have compromised my head gasket last weekend at Lime Rock (Green TR4=
#802), can you or someone recommend one that is robust.
>=20
> Thank you
> Michael L
> _______________________________________________
> fot@autox.team.net
>=20
> http://www.fot-racing.com
>=20
> Donate: http://www.team.net/donate.html
> Archive: http://autox.team.net/archive http://www.team.net/pipermail/fot
> Unsubscribe/Manage: http://autox.team.net/mailman/options/fot/jwheeler1947=
@yahoo.com
>=20
>=20
> _______________________________________________
> fot@autox.team.net
>=20
> http://www.fot-racing.com
>=20
> Donate: http://www.team.net/donate.html
> Archive: http://autox.team.net/archive http://www.team.net/pipermail/fot
> Unsubscribe/Manage: http://autox.team.net/mailman/options/fot/vfracing@aol=
.com
>=20
>=20
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<html><head><meta http-equiv=3D"content-type" content=3D"text/html; charset=3D=
utf-8"></head><body dir=3D"auto">Michael;<div>It is also critical that the l=
iners protrude above the block by .005 to .007=E2=80=9D to ensure a good sea=
l. This is before any compression of the figure 8 gaskets. If the prot=
rusion is less, the top of the block should be milled to achieve the proper p=
rotrusion.</div><div>If you have milled the head more than about .060 you sh=
ould consider staking the head around the bores between cylinders two and th=
ree per the Kastner book. It is weak in this area.</div><div>The rest of the=
advice you=E2=80=99ve received is pretty sound, but I have not tried all of=
it.</div><div>Depending on how much you=E2=80=99ve milled the head and what=
you have done with the combustion chambers, you may need to reshape the fir=
e ring area of your gasket. It must not protrude at all into the combustion c=
hamber.</div><div>Phil<br><br><br><div dir=3D"ltr">Sent from my iPhone</div>=
<div dir=3D"ltr"><br><blockquote type=3D"cite">On Jul 31, 2020, at 6:25 PM, J=
ack Wheeler via Fot <fot@autox.team.net> wrote:<br><br></blockquote></=
div><blockquote type=3D"cite"><div dir=3D"ltr">=EF=BB=BF<!--[if gte mso 9]><=
xml><o:OfficeDocumentSettings><o:AllowPNG/><o:PixelsPerInch>96</o:PixelsPerI=
nch></o:OfficeDocumentSettings></xml><![endif]--><div class=3D"ydp48ec8264ya=
hoo-style-wrap" style=3D"font-family:Helvetica Neue, Helvetica, Arial, sans-=
serif;font-size:13px;"><div></div>
<div dir=3D"ltr" data-setdir=3D"false"><span><cite class=3D"ydp93995=
a00algo-display-url">I've read all of the comments, but haven't heard anythi=
ng about Cometic. I had rebuilt my TR-3 engine a number of years ago, u=
sing the stock head gasket. I built the engine as I would have built o=
ne of my race engines in the day, except with a milder cam and less compress=
ion (10.5:1). =46rom day 1 it never really ran right. I began to=
suspect coolant was getting into the combustion chamber, so I bought one of=
those test kits where you pull some coolant out while the engine is running=
and add a chemical which tests for hydrocarbons. Sure enough, hydroca=
rbons were getting into my coolant system. That says bad head gasket o=
r crack in the head. Since I'd had the head magnafluxed during the reb=
uild, I assumed it was the head gasket.</cite></span></div><div dir=3D"ltr" d=
ata-setdir=3D"false"><span><cite class=3D"ydp93995a00algo-display-url"><br><=
/cite></span></div><div dir=3D"ltr" data-setdir=3D"false"><span><cite class=3D=
"ydp93995a00algo-display-url">I began asking around about where I could get a=
good gasket. A guy at a local engine shop (primarily Ford engines) re=
commended Cometic. I had never heard of them, and told him the engine w=
as over 50 years old, so surely they would not make a gasket for it. H=
e encouraged me to check the internet, and sure enough, they make a whole bu=
nch of them for the TR engine. It's been a few years ago, but as I rec=
all, they had gaskets for different bores (i.e. 83MM, 86MM, 87MM, etc.) and y=
ou could order different thicknesses. They stacked steel gaskets on to=
p of each other to get to the thickness desired. I think I ordered a 3=
layer gasket. It all sounded a little fishy, but based on the strong r=
ecommendation I had received, I ordered one.</cite></span></div><div dir=3D"=
ltr" data-setdir=3D"false"><span><cite class=3D"ydp93995a00algo-display-url"=
><br></cite></span></div><div dir=3D"ltr" data-setdir=3D"false"><span><cite c=
lass=3D"ydp93995a00algo-display-url">I removed the bad head gasket and repla=
ced it with the Cometic gasket, and suddenly the engine ran great. I h=
ave put almost 7.000 miles on the car since then and haven't had a problem.&=
nbsp; It runs cool (even on 95 degree days, as tested recently), pulls stron=
g, and no sign of any coolant leaks. By the way, I noticed someone els=
e recommended Hylomar gasket cement. I also used that. A light c=
oat on all sealing surfaces does the trick. Do not spray a thick coat.=
Below is the link to the Cometic web site. Check it out.<br></c=
ite></span></div><div dir=3D"ltr" data-setdir=3D"false"><span><cite class=3D=
"ydp93995a00algo-display-url"><br></cite></span></div><div dir=3D"ltr" data-=
setdir=3D"false"><a href=3D"https://www.cometic.com/"; rel=3D"nofollow" targe=
t=3D"_blank" class=3D"enhancr_card_6247372032">Cometic Gasket - Sealed Under=
Extreme Pressure</a></div><div><br></div><div id=3D"ydp48b58523enhancr_card=
_6247372032" class=3D"ydp48b58523yahoo-link-enhancr-card ydp48b58523yahoo-li=
nk-enhancr-not-allow-cover ydp48b58523ymail-preserve-class ydp48b58523ymail-=
preserve-style" style=3D"max-width:400px;font-family:YahooSans, Helvetica Ne=
ue, Segoe UI, Helvetica, Arial, sans-serif" data-url=3D"https://www.cometic.=
com/" data-type=3D"YENHANCER" data-size=3D"MEDIUM" contenteditable=3D"false"=
><a href=3D"https://www.cometic.com/"; style=3D"text-decoration-line: none !i=
mportant; text-decoration-style: solid !important; text-decoration-color: cu=
rrentcolor !important; color: rgb(0, 0, 0) !important;" class=3D"ydp48b58523=
yahoo-enhancr-cardlink" rel=3D"nofollow" target=3D"_blank"><table class=3D"y=
dp48b58523card-wrapper ydp48b58523yahoo-ignore-table" style=3D"max-width:400=
px" cellspacing=3D"0" cellpadding=3D"0" border=3D"0"><tbody><tr><td width=3D=
"400"><table class=3D"ydp48b58523card ydp48b58523yahoo-ignore-table" style=3D=
"max-width:400px;border-width:1px;border-style:solid;border-color:rgb(224, 2=
28, 233);border-radius:2px" width=3D"100%" cellspacing=3D"0" cellpadding=3D"=
0" border=3D"0"><tbody><tr><td><table class=3D"ydp48b58523card-info ydp48b58=
523yahoo-ignore-table" style=3D"background-color: rgb(255, 255, 255); backgr=
ound-repeat: repeat; background-attachment: scroll; background-image: none; b=
ackground-size: auto; position: relative; z-index: 2; width: 100%; max-width=
: 400px; border-radius: 0px 0px 2px 2px; border-top: 1px solid rgb(224, 228,=
233);" cellspacing=3D"0" cellpadding=3D"0" border=3D"0"><tbody><tr><td styl=
e=3D"background-color:#ffffff;padding:16px 0 16px 12px;vertical-align:top;bo=
rder-radius:0 0 0 2px"></td><td style=3D"vertical-align:middle;padding:12px 2=
4px 16px 12px;width:99%;font-family:YahooSans, Helvetica Neue, Segoe UI, Hel=
vetica, Arial, sans-serif;border-radius:0 0 2px 0"><h2 class=3D"ydp48b58523c=
ard-title" style=3D"font-size: 14px; line-height: 19px; margin: 0px 0px 6px;=
font-family: YahooSans, Helvetica Neue, Segoe UI, Helvetica, Arial, sans-se=
rif; color: rgb(38, 40, 42); max-width: 314px;">Cometic Gasket - Sealed Unde=
r Extreme Pressure</h2><p class=3D"ydp48b58523card-description" style=3D"fon=
t-size: 12px; line-height: 16px; margin: 0px; color: rgb(151, 155, 167);">Co=
metic Gasket supplies hi-performance gaskets for a variety of motorsports ma=
rkets: ATV, Drag Race, Domestic Au...</p></td></tr></tbody></table></td></tr=
></tbody></table></td></tr></tbody></table></a></div>Jack<div><br></div><div=
><br></div><div dir=3D"ltr" data-setdir=3D"false"><br></div><div dir=3D"ltr"=
data-setdir=3D"false"><br></div><div><br></div>
=20
</div><div id=3D"ydp82cd51b4yahoo_quoted_6952941027" class=3D"ydp82c=
d51b4yahoo_quoted">
<div style=3D"font-family:'Helvetica Neue', Helvetica, Arial, sa=
ns-serif;font-size:13px;color:#26282a;">
=20
<div>
On Friday, July 31, 2020, 5:27:49 PM EDT, mleccese1--- v=
ia Fot <fot@autox.team.net> wrote:
</div>
<div><br></div>
<div><br></div>
<div><div id=3D"ydp82cd51b4yiv9885013498">
<div style=3D"color: black; font-style: normal; font-weight: normal; font-st=
retch: normal; font-size: 10pt; line-height: normal; font-family: arial; fon=
t-size-adjust: none;">
<div><font size=3D"2">Phil, Dave,</font></div>
<div><font size=3D"2"><br>
</font></div>
<div><font size=3D"2">I may have compromised my head gasket last weekend at L=
ime Rock (Green TR4 #802), can you or someone recommend one that is robust.<=
/font></div>
<div><font size=3D"2"><br>
</font></div>
<div><font size=3D"2">Thank you</font></div>
<div><font size=3D"2">Michael L<br>
</font></div>
</div>
</div>_______________________________________________<br><a href=3D"mailto:f=
ot@autox.team.net" rel=3D"nofollow" target=3D"_blank">fot@autox.team.net</a>=
<br><br><a href=3D"http://www.fot-racing.com"; rel=3D"nofollow" target=3D"_bl=
ank">http://www.fot-racing.com</a><br><br>Donate: <a href=3D"http://www.team=
.net/donate.html" rel=3D"nofollow" target=3D"_blank">http://www.team.net/don=
ate.html</a><br>Archive: <a href=3D"http://autox.team.net/archive " rel=3D"n=
ofollow" target=3D"_blank">http://autox.team.net/archive </a><a href=3D"http=
://www.team.net/pipermail/fot" rel=3D"nofollow" target=3D"_blank">http://www=
.team.net/pipermail/fot</a><br>Unsubscribe/Manage: <a href=3D"http://autox.t=
eam.net/mailman/options/fot/jwheeler1947@yahoo.com" rel=3D"nofollow" target=3D=
"_blank">http://autox.team.net/mailman/options/fot/jwheeler1947@yahoo.com</a=
><br><br><br></div>
</div>
</div><span>_______________________________________________</span><b=
r><span>fot@autox.team.net</span><br><span></span><br><span>http://www.fot-r=
acing.com</span><br><span></span><br><span>Donate: http://www.team.net/donat=
e.html</span><br><span>Archive: http://autox.team.net/archive http://www.tea=
m.net/pipermail/fot</span><br><span>Unsubscribe/Manage: http://autox.team.ne=
t/mailman/options/fot/vfracing@aol.com</span><br><span></span><br><span></sp=
an><br></div></blockquote></div></body></html>=
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_______________________________________________
fot@autox.team.net
http://www.fot-racing.com
Archive: http://autox.team.net/archive http://www.team.net/pipermail/fot
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