Posted for "Richard M. Martin" <martinrm@ncplus.net>:

Do not use high temp paint, not very durable.  Use inexpensive Krylon
Interior/Exterior spray can  paint (comes in many colors).  Just before
spray painting, spray down the parts with engine start fluid and blow dry.
Mask appropriate areas, and spray with two light coats.  After engine
assembly, again spray down the engine with engine start fluid and spray
entire engine with a clear coat of Krylon.

This is the way a local Mazda rotary engine rebuilder has been doing if for
over 20 years.

Richard