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Joined: May 2017
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Grease Monkey
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Grease Monkey
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Discovered vacuum leak at center port between intake manifold and head. A rough check shows about a 15 thousands gap on the center of the manifold and a good flat surface at the head . Should I look for a machine shop in the Buffalo area or should a good gasket seal it ?
Last edited by RichardLBenzin; 12/03/19 10:35 PM.
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Joined: May 2002
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ChatMaster - 6,000
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ChatMaster - 6,000
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I would get the manifolds surfaced.
When you do assemble both inlet manifolds together loosely then tighten to the head the tighten the manifolds together, remove as a unit and get them machined together. That way everything is going properly aligned.
Tony
1938 1/2 ton Hope to drive it before I retire
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I agree with tonyw on doing it the right way but I had a similar problem that was also going to require removing the head which I did not want to do right away. I read about Remflex gaskets on the AACA forum and tried one on my 39, 216 and it stopped the leaks. My leaks were exhaust. The gasket was expensive but I am very satisfied. Dave http://catalog.remflex.com/
Last edited by Dave39MD; 12/04/19 06:50 AM.
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Grease Monkey
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Grease Monkey
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Thanks guys . The other question that I have is : Do the manifolds need to be together to machine or do they do them separately . Thanks again !!!!
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Joined: Jun 2007
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Like Tony said above, machine them both together as a unit so the surfaces are identical with each other.
1938 Canadian Pontiac Business Coupe (aka a 1938 Chevy Coupe with Pontiac shaped front sheet metal - almost all Chevy!)
1975 4-speed L82 Vette
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Joined: May 2017
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Grease Monkey
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Grease Monkey
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Awesome ! Thanks for the advise everyone
Rick
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Joined: May 2002
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ChatMaster - 6,000
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In theory the head is straight so the manifolds need to be machined as 1 to make them straight as well, or you end up with what you already have.
Tony
1938 1/2 ton Hope to drive it before I retire
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Joined: May 2017
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Grease Monkey
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Grease Monkey
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This has been a 25 year project and with your help I might have it back on the rode in the spring.Thanks so much . Rick
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