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NCC Forum Home Page -> NCC - General Discussion -> What type of bolts should I use for attaching exhaust manifold. To alunimun heads?
Post Info TOPIC: What type of bolts should I use for attaching exhaust manifold. To alunimun heads?
jim larson


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What type of bolts should I use for attaching exhaust manifold. To alunimun heads?
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I used aluninum bolts for attaching the intake manifold.  I was planing to use the original steel bolts on the exhaust manifold.  They are in good shape.  But because they will be going into an aluminum head, maybe I should use some other type.



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Jim L

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Lost in the 60s


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Steel bolts with a LIGHT coating of anti-seize.
I've never seen, or heard of, aluminum fasteners for an engine. I would think they would stretch from heat at the exhaust.
Do you mean you have stainless bolts on the intake ?


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Mitch D.   River Falls, WI

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jim larson


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Lost in the 60s wrote:

Steel bolts with a LIGHT coating of anti-seize.
I've never seen, or heard of, aluminum fasteners for an engine. I would think they would stretch from heat at the exhaust.
Do you mean you have stainless bolts on the intake ?

 Yes I think SS bolts on the intake.  Not sure if rebuilder used anti - seize or not.   I will just use the original bolts on the exhaust manifold.



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Jim L

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John D


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2nd the light (if that's possible) coat of anti-seize on any fastener going into aluminum, or whenever using a Stainless bolt... especially when fastening SS to SS. (Stainless on Stainless will gall under torque, and practically weld itself together.)

antiseize.png



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John D. - St. Louis Park, MN.

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