Check this out:An old hot rodder's trick is to use graphite spray (the dark stuff) on exhaust manifolds. It doesn't yellow/discolor like clear temp paints nor flake/bake off, and it's easy to touch up and cheap.
Check this out:
I thought I'd post some pictures documenting the results of my approach to revitalizing the exhaust manifolds on the 3FE from my '89 FJ62, part of my larger '86 FJ60 build (I'll start a separate build thread on that project in a few days). After doing a boatload of searching on Mud and...forum.ih8mud.com