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Exhaust Manifold Gaskets

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Old Mar 9, 2005 | 02:08 PM
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Default Exhaust Manifold Gaskets

I'm putting new exhaust manifolds on my 73. The question is use gaskets or not? Origionally it came without.
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Old Mar 9, 2005 | 04:44 PM
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Corvette Charlie

When I replaced my cracked manifolds last summer (with another set of manifolds I had around for emergencies) I used gaskets, and haven't had to retighten, and have had no problems with them. I figure that it helped them to seal better, thus perventing leaks. Just my $.02.

trw
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Old Mar 9, 2005 | 04:45 PM
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I'm putting gaskets on my '74 big block - also did not come with gaskets originally. I trimmed them some so they weren't as obvious to the casual looker.
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Old Mar 9, 2005 | 11:34 PM
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If you have absolutely flat head exhaust surfaces and absolutely flat exhaust manifold surfaces, just like when the engine was new and the manifold was new, you won't need the gaskets. Otherwise use gaskets.
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Old Mar 10, 2005 | 07:10 AM
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also some copper RTV helps
i need a useable set , ain't gotta be pretty ????
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Old Mar 10, 2005 | 09:43 AM
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Originally Posted by wattac2
If you have absolutely flat head exhaust surfaces and absolutely flat exhaust manifold surfaces, just like when the engine was new and the manifold was new, you won't need the gaskets. Otherwise use gaskets.

Eddie
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Old Mar 10, 2005 | 06:06 PM
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I had the manifolds on and off my different cars a few times and never used gaskets. The surfaces are pretty flat even on old manifolds. Joe
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