What type of bolts should I use for attaching exhaust manifold. To alunimun heads?
jim larson said
Apr 24, 2021
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.
Lost in the 60s said
Apr 24, 2021
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 ?
jim larson said
Apr 24, 2021
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.
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.)
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.
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.
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.)