Painting an Engine Questions

Thanks for the replies, I do have a power washer and will use that. What would be best to cover the exhaust outlets when power washing? I have some stock style gaskets I was thinking of putting tape over for when I paint but I do not know if those would hold water out or not. I do plan on using clear after the paint, its good to hear oil and grease does not stick to that quite as easy as it does to paint.