actually when we custom paint an engine block. i use the same paint that i use on the car itself. i bake the paint on a car at 180 degrees and an engine runs 190 to 210. it holds up pretty good as long as its prepped right it will last a year or 2
i also am curious about this... the dudes at the local chop shop told me that they just used regular primer/paint and it comes out fine.. but these are on vehilces that are only cruized to shows and not driven regularly...
i was told that you could use a high heat primer (500 degree) and then paint over that... but i also heard that those kinda of primers can cause fish eyes....
so to be honest i really dont know for sure but i am curious as to what other people with more possible expirience have to say
well... the block shouldnt be getting warmer then the boiling temperature of water... as cooling water runs through your block.
so i think its not nessecary to use temp paint.
a guy i know painted his engine just like something u do with the body.
first remove all the old paint....everything.. and clean it very good and decrease. then build up the paintjob.
that way it should hold very well.... that guy painted his block metallic purple and even at the places near the headers it stays good.
so, i think that the attachment of the paint to the block is much more of importance then the paint resistance temperature is.
I have my engine painted with HOK kandy pink over a pavo purple base ...I have had no problem all sumer with it so far ... My buddy lavish had his engine painted for 2 years without probs... You can do it but you must get it clean & skuff it up good for adhesion.....