Depending on how used they are, I would be rather leery in general about powdercoating used aluminum brake calipers. They have been very hot while exposed to miles of road dirt, grunge, brake dust, dead bugs, road kill, grunge, brake fluid, and grunge. They are probably going to require extra precuring to outgas all the accumulated crud and oils, or otherwise the powdercoat will just bubble and lift anyway and you have spent a lot of $$$ and trouble for nothing. Now, if you are not performing the powdercoating yourself, you can ask for extra precuring and the guy at the counter will say, "Sure thing, buddy, will do," then immediately erase it from his memory. May as well just hit it with some good high-temp header or caliper paint. Looks just fine unless you are gunning for the Ridler Award; easily touched up.
This raises an interesting question - is sandblasting not adequate to remove said grunge, brake dust, bugs and grunge? I've only ever sandblasted & powdercoated subframes and miscellaneous components that aren't exposed to such high operating temps.
You make it sound like I'm trying to invent a new spectral colour
Just kidding. I'll be honest, splashing header paint onto the calipers sounds a bit hack. While I subscribe fairly religiously to the "go
" ethos, I spent a good $1,600 on this kit, so would prefer them to at least look decent; OZ Racing uses my car to display at local auto shows; and analogous to welding, I like to believe that a proper functional job should also look smart. That said, I would definitely consider the ceramic-based poly paint you linked up above depending on surface finish, but I have enquired and it is not imported locally. If this was a track car, different story.
Appreciate everyone's opinions. Even if conveyed with an impressive lack in people skills, Catalina Park