Really, is the stuff you've had done cast? I've had some headers in pretty abusive environments that never showed a speck of rust.quote:Originally posted by Geeto67
Jet hot is not a rust proofing coating - just a thermal coating. Anybody who thinks otherwise is welcome to come over and look at my collection of jet hot coated pontiac headers that have rusted over.
The jet hot coating works like header wrap without the look. Meant to trap heat in the pipe without the retained moisture issue. It will rust eventually. Took my pontiac Ram Air manifolds 3 years to show signs of rust.