Contour Enthusiasts Group Archives Forums Modifications General Mods Painted Exhuast

I coated my y-pipe after I wrapped it. I used 2000 deg Thermo-Tec coating... from Summit. I wasn't concerned about rust.. only heat, so I stopped there. I didn't do any of the cat pipe because I was concerned that the cat would overheat.

I painted my exhaust about 3 years ago. It has held up well. It has about 15% surface rust showing currently. Mainly on the tail section.
I wrapped from the collectors to the flex-pipe and that has held up very well.

Here is a picture from 3+ years ago.

I heard it was about 800-600 at the manifold and then about 500-400 throughout. Those numbers seem a bit high though. I would think towards the tailend of things the exhaust would have dissipated heat a little quicker then that. Not sure about the manifolds isn't the combustion chamber at like 1200 degrees F or higher?

Painted more exhaust systems than I can remember, as long as you prep it, and use an appropriate heat level you'll be fine. I found the 500 degree engine enamel worked ok near the tail pipes, use the higher temp stuff (as someone already suggested) nearer the engine. Unless you're in rustville and the system is ancient you can prep/sand it without going through the pipes.....