John:
I don't know what it is, but it can't be good. By all means
remove it.
I can only speculate that it is some sort of combustion residue
resulting
from injection of air into the exhaust manifold. Perhaps there is a
slight
leak where the tubes enter the manifold so that the substance can
accumulate
on the outside?
Vance
-----Original Message-----
From: owner-6pack@autox.team.net [mailto:owner-6pack@autox.team.net] On
Behalf Of John Mitchell
Sent: Tuesday, September 28, 2004 9:14 AM
To: 6-Pack; triumphs@autox.team.net
Subject: Crud in Exhaust Manifold
Hi guys, Im about to send my late model exhaust manifold(76 TR6) with
the air injector tubes out for ceramic coating. I noticed that in some
runners where the tubes exit the manifold, there is a putty like hard
substance. It's white inside and coated with soot on the outside.
There's also some of this inside where the manifold connects to the
exhaust pipes. Is this something that should be there or can I chip
this out? Is it there to seal those tubes somehow. Its only in a
couple of the runners but it must really restrict flow. Any Ideas
what this is? TIA John Mitchell 76 TR6
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