Engine paint

Painted many a engine this way and have NEVER had a problem. All based on a freshly assemble engine. I first start by scrubing it with a good soapy bath with Dawn. I then wipe it all down with POR15 prep&ready. Follow that with clean water and a fresh scrub brush . Allow it to dry throughly. Next I spray on a coat of self etching primer, allow to dry for 1 hour. Paint with your color of choice catylized acrylic urethane, first couple of caots very lightly applied for coverage, with the last being a medium wet coat sprayed the way you want it to look. Never in the past 15 years have I had any issues with burn off, discoloring, or peeling/flaking. And will look great for years, just like the exterior of your car.