Paint inside air cleaner housing

[304065]

What paint should I use inside my steel aircleaner housing? The whole thing was bead blasted to remove rust and the outside painted with the correct degree of gloss. The inside is bare metal, which will rust eventually due to moist air from the oil tank breather, and the rust will find its way into the idle air bleed and directly into the float chamber through the vent. Not a question of whether, when.

POR-15? Glyptal? Rustoleum Epoxy and forget about it?

[JFairman]

I'd use satin black engine enamel, plastikote goes on beautiful and smooth with no orange peel or fisheye if you spary a light tack coat followed by 2 wet coats. The others you listed should work too but I havn't tried them. I have used Russell satin black epoxy puff can paint and it's good stuff.

Best to paint the inside first because overspray from the inside onto the outside you already painted won't be fun to eliminate.
You could mask the outside off with paper and tape, or rub some auto finish wax onto the outside paint and then spray the inside paint. After it dries wipe off the outside wax and overspray dust on the outside should come off with the wax.

Old trick when spraying on headliner paint while it's installed in the car... wax the car before spraying and wipe the wax off afterward to take the inevitable overspray dust with it.