Talk to your coater. Ours starts off with a white base coat no matter which final color is used. They say that their white has the best adhesion to the bare metal.
Bob, I need advice. If I talk to "my coater", is that a painter or a powder coater, or something different?
I have used some high temp spray paints with mixed results and finally used a high temp wrap, doesn't look pretty but gets the job done. I know that some peoples Jet Hot or other high temp coatings.
What kinds of high temp coatings do you have available near you?
Jim, it's something I've never looked into in detail. I recall using HT paint on extractors decades ago and the paint went 'chalky'.
What wrap did you use? Something similar to what we sometimes see on GT40 exhaust primaries?
Wish I could remember the name, but that looks like it exactly. I bought some stainless steel zip ties to keep it in place. I am still in the process of moving my stuff from the old place to the new place that I finished building and have been working on putting the shop back together. I should be back over there in a couple of days and I will look to see if I kept some packaging. I bought the wrap at a local automotive supply store.