Have you ever used epoxy for the cast iron exhaust ports? I found this super high temp epoxy at McMaster Carr.
http://www.mcmaster.com/nav/enter.asp?pagenum=3165
Will this work on cast iron heads?
Epoxy the exhaust port?
Moderator: Team
Check out
Pyro Putty made by Aremco
http://www.aremco.com/a15.html
Pyro-Putty®
These high temperature ceramic and metal-filled pastes are ideal for repairing defects in manifolds, headers, exhaust pipes, mufflers, and more. Pyro Putty® metal repair compounds bond tanaciously to cast aluminum, cast iron and steel, and are easy to apply, cure, machine and clean.
I have used these putties however they are a bit of a pain in the ....
I found that it needs to be applied in very thin layers to cure up properly. If you get it to cure properly it is very hard and grinds almost like metal,
I wouln't use it on a Turbo application for fear of any of it coming loose and going through the vanes of a Turbo, ( I don't think the Turbo would like it)
Good luck
http://www.aremco.com/a15.html
Pyro-Putty®
These high temperature ceramic and metal-filled pastes are ideal for repairing defects in manifolds, headers, exhaust pipes, mufflers, and more. Pyro Putty® metal repair compounds bond tanaciously to cast aluminum, cast iron and steel, and are easy to apply, cure, machine and clean.
I have used these putties however they are a bit of a pain in the ....
I found that it needs to be applied in very thin layers to cure up properly. If you get it to cure properly it is very hard and grinds almost like metal,
I wouln't use it on a Turbo application for fear of any of it coming loose and going through the vanes of a Turbo, ( I don't think the Turbo would like it)
Good luck
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