Originally Posted by 327NUT
Just painted my Cadillac block with DupliColor engine primer and enamel. The inside red color is Glyptal, not really necessary but I had a can of it so why not.
Please for the love of god stop everything you are doing and scrape that stuff off the inside of your block, I work in a machine shop building engines for race cars and fixing the engines the average joe thinks he's going to make 600hp with, every time we get one in with issues we find that the peeling or disintegrating paint inside the engine is causing excessive wear in the bearings, clogging oil pumps etc. today's modern fuels alcohols and diesels are very potent and will eat away anything you spay inside your engines to increase oil flow. If oil return is that important please take it to a shop or get a dremmel and start smoothing the rough surfaces