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| | | | Joined: Mar 2002 Posts: 126 Wrench Fetcher | | Wrench Fetcher Joined: Mar 2002 Posts: 126 | Two questions actually.
216 Engine:
1) should I use a sealer of some type on the intake/exhaust manifolds?
2) Last time I assembled the manifolds, tightening both to the block before tightening them together, I still seemed to not have the greatest seal. If only the gaskets were thicker. So I have two nice sets of manifold gaskets for the truck. Anyone ever double up with two sets for a thicker gasket? Would I need a sealer between the two? What sealer will hold wup well to this kind of heat?
Chris Simmonds
1942 Chevy 3/4 ton
| | | | | Joined: Sep 2001 Posts: 29,269 Bubba - Curmudgeon | | Bubba - Curmudgeon Joined: Sep 2001 Posts: 29,269 |
Chris,
Do not fully tighten the two manifolds to the head - just light-snug tighten them with no gaskets between the manifolds and the head. Then, fully tighten the intake to exhaust manifold with one gasket between them. Then, put the manifold-to-head gaskets in place and tighten the manifolds to the head.
Last edited by tclederman; 06/09/2011 12:06 PM. Reason: made it clear to put manifold to head gaskets in place
| | | | | Joined: Mar 2002 Posts: 126 Wrench Fetcher | | Wrench Fetcher Joined: Mar 2002 Posts: 126 | Chris,
Do not fully tighten the two manifolds to the head/block - just light-snug tighten them with no gaskets between the manifolds and the head/block. Then, fully tighten the intake to exhaust manifold with one gasket between them. Then tighten the manifolds to the head/block. Got it! Except from this description, are you saying do not use any gaskets at the manifold/head connection???
Chris Simmonds
1942 Chevy 3/4 ton
| | | | | Joined: Dec 2010 Posts: 97 'Bolter | | 'Bolter Joined: Dec 2010 Posts: 97 | Gaskets exist for the joint between inlet and exhaust manifolds and for the joint between the manifolds and the head. My thought is that even when our trucks were made they'd thought of "value engineering" and if the part didn't serve a purpose, they wouldn't have bothered putting it there. (A purpose other than raising the price, specially if it's hidden so we can't see where the money goes.) | | | | | Joined: Sep 2001 Posts: 29,269 Bubba - Curmudgeon | | Bubba - Curmudgeon Joined: Sep 2001 Posts: 29,269 |
Chris,
Sorry, that is not what I meant but it is what I mistakenly implied. After you get the two manifolds bolted together (and tightened), put the manifolds-to-head gaskets in place and then tighten.
I will edit my reply by adding that step.
| | | | | Joined: May 2005 Posts: 8,878 . | | . Joined: May 2005 Posts: 8,878 | If you have sealing problems already likely from warped manifolds I'll add another step. Do not fully tighten the two manifolds to the head - just light-snug tighten them with no gaskets between the manifolds and the head. Then, fully tighten the intake to exhaust manifold with one gasket between them. Now take the assembly to a machine shop to have them ground flat while bolted together. Then, put the manifold-to-head gaskets in place and tighten the manifolds to the head. | | |
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