Exhaust Manifold bolt finish

[Gerald C.]

I will be refinishing my 1967 small block exhaust manifolds this winter. I put new bolts on about two years ago and they have rusted already.

Does anyone have any thoughts as to what finish I should try for so that these bolts do not rust.

Thanks!

Jerry

[Joe L.]

Re: Exhaust Manifold bolt finish

I will be refinishing my 1967 small block exhaust manifolds this winter. I put new bolts on about two years ago and they have rusted already.

Does anyone have any thoughts as to what finish I should try for so that these bolts do not rust.

Thanks!

Jerry

Jerry-------


The bolts were phosphate-finished. In the exhaust manifold application they will rust rapidly, just as you've found. While I have not done this, I expect that a very high temperature satin clear might be the best bet to prevent this from occurring while maintaining close to original appearance.

[Gerald C.]

Re: Exhaust Manifold bolt finish

Thanks Joe!

[Bill L.]

Re: Exhaust Manifold bolt finish

Jerry-------


The bolts were phosphate-finished. In the exhaust manifold application they will rust rapidly, just as you've found. While I have not done this, I expect that a very high temperature satin clear might be the best bet to prevent this from occurring while maintaining close to original appearance.

VHT has a 1200 degree satin clear paint. Once properly torqued, you can spray some clear on a piece of shiny cardboard and use a brush to touch up.


Bill

[Edward J.]

Re: Exhaust Manifold bolt finish

I will be refinishing my 1967 small block exhaust manifolds this winter. I put new bolts on about two years ago and they have rusted already.

Does anyone have any thoughts as to what finish I should try for so that these bolts do not rust.

Thanks!

Jerry

Jerry, the exhaust manifolds and bolts, French locks where painted engine orange on your 63, as these parts where on the engine during the painting process.