HT4100 4.1, 4.5, 4.9 Discussion, HT4100 Exhaust Manifold Gaskets in Cadillac Engine Technical Discussion; Can anyone advise me about exhaust manifold gaskets on the HT4100 engine.
We are changing the head gasket on an ...
Can anyone advise me about exhaust manifold gaskets on the HT4100 engine.
We are changing the head gasket on an 85 Seville, the exhaust manifolds are fitted as standard according to the workshop manual without gaskets but the gasket set includes them. Should we use them or not, any other tips and advice on this issue would be much appreciated as I am in the UK so can't ask my local garage!
Automobile(s): 1988 Allante' (sold), 1984 Eldorado, 84 Sedan DeVille
Re: HT4100 Exhaust Manifold Gaskets
Simply lay a straight edge on the manifold surface. Can you slip a .005 inch feeler gauge between the straight edge and the manifold. If you can, use the gaskets. If not, dont. They are in the sets because 25% of the time exhause manifolds warp once removed.
I had to replace a cracked exhaust manifold on my 90 Seville 4.5. I located a replacement at my local u-pull yard and found no gasket upon removal of the donor manifold. My books are ambilivant concerning gasket or no gasket, refering to using a paste, but when I removed the one from my car I found a gasket. So I bought a new gasket and installed it.