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Please see photos of exhaust leak residue.

I will be replacing the manifold/block and exhaust pipe gaskets. I have purchased an intake/exhaust manifold joint gasket.

Should I use an exhaust manifold gasket sealer?

Also, there is residue around the exhaust deflector shaft. How can I resolve that? Some kind of bushing? New shaft?

I believe that much of the residue is from the previously faulty automatic choke. The plugs look much better now and the tail pipe moisture is not sooty.

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Did you put a straight edge on those surfaces? I'm guessing the they are no longer flat? Maybe those two surfaces should be machined? Manifolds are something I haven't played with on my car, at least not yet!

I worry that machining the mating surface between the intake and exhaust manifolds may increase the gap too much.

If it was me, I would use the gasket you bought and put exhaust gasket sealer on both sides. The sealer sets somewhat quickly.

I don't recall ever seeing a gasket there on any of my 1951-1954 Packards (that doesn't mean there wasn't one!) but all the soot is a sign of a tuning or carburetor problem. Whether leaking or not, it should not be putting all that out.

The parts book doesn't indicate a gasket, but I'm sure it wouldn't be an issue to put one. Other than to Kevin's point that machine would increase the gap, putting a gasket would reduce the gap. Maybe machine the surfaces and then use a gasket that will fill the gap?

Which cars had the heat shield (9.1115) for the carburetor? Seems like a good idea, but my 53 Cavalier doesn't have one.




I agree with Don, very sooty, it must have been running quite rich. Maybe just not enough run time to get things set due to chasing other issues. Time for an Italian tune up!

On another note, it's been -5 F here and I've been getting my car from storage so I could work on the rear fenders. It sure runs well, must be the cold air induction. I think I'm going to have to rework the gaskets in my heater controls, they're letting too much fresh air through when they shouldn't be. I replaced and adjusted them last summer, but I think the replacement gaskets are too stiff, which would be even worse in the cold weather.