Re: Exaust Manifold Leak
- Yes they do come loose, but the noise is more of a popping sound
from the heads. Carefully put your ands near the exhaust manifold
gaskets to feel for the leaks. Be careful, it gets real hot.
A "monster" noise is more likely coming from the flanges at the Y-
pipe. I've had both leak on my 73, and it's best to tighten the 2
flange bolts a little at a time on both sides of the pipe, or the
football shaped pipe will get lop-sided.
Changing the gaskets yourself on the 472 isn't too difficult if your
bolts are in good shape. If you decide to do it yourself, replace
the bolts. You don't want one to break off in the head.
I've heard of guys soaking the gaskets in water to make them swell
up, or painting them to seal against the head. My book says to put a
coat of molly grease on the gasket.
--- In Cadillac_Performance_Association@yahoogroups.com, "TC"
> Hey Guys,like a
> I have had my exaust manifold gaskets replaced twice in the last 6
> months on my 73 472. I was told that thicker gaskets were used the
> second time but I still have leaks which make this thing sound
> monster. Is it as simple as tightening them down or what? Any help
> would be greatly appreciated.