I purchased the expensive Earl's metal gaskets and used them on my
aluminum heads. Perfect seal. After a very short time I removed the
motor and made some changes and put it back together. I had some
horrendous exhaust leaks that sounded like internal motor noises. By
luck, the noises were identified (without pulling the motor) and I
replaced them with regular Mr. Gasket parts.
Lesson 1, never reuse even good looking gaskets
Curtis
-----Original Message-----
From: owner-tigers@autox.team.net [mailto:owner-tigers@autox.team.net]
On Behalf Of Theo Smit
Sent: Friday, August 26, 2005 8:06 AM
To: tigers@autox.team.net
Subject: RE: Headers
At the last SUNI, Doug Jennings Sr. had some pointed comments about
Allen head bolts on headers... My header bolts came undone without too
much hassle when I took the engine out, although I could see from burn
marks on the gaskets that I'd had a few leaks at the exhaust ports
(which it always sounded like... I just never knew for sure where the
leak was).
I'm no expert on fastener and threadlocker technology, but I wouldn't
use a threadlocker on exhaust bolts - I'd just use antiseize. The blue
medium-duty threadlockers soften with heat, and the red heavy-duty stuff
would probably be a little scary for bolts that you need to remove with
only a limited amount of tool room. The possibility of tearing the
threads out of the aluminum heads isn't appealing either.
Theo
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