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Had a closer look. There seem to be more like pin holes than cracks, so mayb=
e some corrosion got in there. I=E2=80=99m going to try K-Seal, and if that d=
oesn=E2=80=99t do it, keep an eye on it.=20
Thanks for all your feedback and help!
-john
> On Feb 8, 2021, at 5:33 AM, fubog1 via Fot <fot@autox.team.net> wrote:
>=20
> =EF=BB=BF
> If that's a static leak, a pressure test would likely confirm your suspici=
ons.
> I checked a cut-up head that I have, there's a good bit of meat around the=
plug hole but if there's heavy corrosion in the water jacket, that could be=
the culprit.
> Glen
>=20
>=20
> -----Original Message-----
> From: John Linney via Fot <fot@autox.team.net>
> To: Fot <fot@autox.team.net>
> Sent: Mon, Feb 8, 2021 12:10 am
> Subject: [Fot] Cylinder head head scratcher.
>=20
> I=E2=80=99m wondering if anyone has seen anything like this in the attache=
d photo. I found some coolant pooled around the number 4 spark plug on my TR=
4 head. I took this photo about 10 minutes after cleaning it up. Stone cold e=
ngine. It appears I=E2=80=99ve got coolant seeping through the head at that p=
oint. The crack is not in the threads as I had feared. Logic tells me this m=
ay not become a critical crack, but I don=E2=80=99t know the topology of tho=
se passages well enough to be certain. Might I soon be in search of a new he=
ad, or is this repairable? Could it be a crack or is it corrosion? The head p=
art number is 511695. Would love to know what you all think.
>=20
> =20
> <PastedGraphic-13.png>
> _______________________________________________
> fot@autox.team.net
>=20
> http://www.fot-racing.com
>=20
> Donate: http://www.team.net/donate.html
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> Unsubscribe/Manage: http://autox.team.net/mailman/options/fot/fubog1@aol.c=
om
>=20
>=20
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> _______________________________________________
> fot@autox.team.net
>=20
> http://www.fot-racing.com
>=20
> Donate: http://www.team.net/donate.html
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>=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">Had a closer look. There seem to be more li=
ke pin holes than cracks, so maybe some corrosion got in there. I=E2=80=99m g=
oing to try K-Seal, and if that doesn=E2=80=99t do it, keep an eye on it.&nb=
sp;<div><br></div><div>Thanks for all your feedback and help!<br><br><div di=
r=3D"ltr">-john</div><div dir=3D"ltr"><br><blockquote type=3D"cite">On Feb 8=
, 2021, at 5:33 AM, fubog1 via Fot <fot@autox.team.net> wrote:<br><br>=
</blockquote></div><blockquote type=3D"cite"><div dir=3D"ltr">=EF=BB=BF
<div style=3D"color:black;font: 10pt Arial, Helvetica, sans-serif;">
<div> <font size=3D"2">If that's a static leak, a pressure test would likely=
confirm your suspicions.</font></div>
<div><font size=3D"2">I checked a cut-up head that I have, there's a good bi=
t of meat around the plug hole but if there's heavy corrosion in the water j=
acket, that could be the culprit.</font></div>
<div><font size=3D"2">Glen</font><br>
</div>
<div> <br>
</div>
<div> <br>
</div>
<div style=3D"font-family:arial,helvetica;font-size:10pt;color:black"><font s=
ize=3D"2">-----Original Message-----<br>
From: John Linney via Fot <fot@autox.team.net><br>
To: Fot <fot@autox.team.net><br>
Sent: Mon, Feb 8, 2021 12:10 am<br>
Subject: [Fot] Cylinder head head scratcher.<br>
<br>
<div id=3D"yiv1318649121">
<div><font class=3D"yiv1318649121" color=3D"#000000"><span style=3D"" class=3D=
"yiv1318649121">I=E2=80=99m wondering if anyone has seen anything like this i=
n the attached photo. I found some coolant pooled around the number 4 spark p=
lug on my TR4 head. I took this photo about 10 minutes after cleaning it up.=
Stone cold engine. It appears I=E2=80=99ve got coolant seeping through the h=
ead at that point. The crack is not in the threads as I had feared. Logic te=
lls me this may not become a critical crack, but I don=E2=80=99t know the to=
pology of those passages well enough to be certain. Might I soon be in searc=
h of a new head, or is this repairable? Could it be a crack or is it corrosi=
on? The head part number is 511695. Would love to know what you all think.</=
span></font>
<div class=3D"yiv1318649121"><span style=3D"color:rgb(0, 0, 0);" class=3D"yi=
v1318649121"><br class=3D"yiv1318649121"></span></div>
<div class=3D"yiv1318649121"><span style=3D"color:rgb(0, 0, 0);" class=3D"yi=
v1318649121"> </span><div><PastedGraphic-13.png></div></div>
</div>
</div>
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