Re: Block / Cylnder head cleaning
A pressure washer should knock most of those deposits off without damaging anything. A mild acid solution and brushes would be good. You could dilute Muriatic Acid to a level where it "just foams" upon contact with the deposits, apply with a toothbrush or parts cleaning brush, then rinse with fresh water as quickly as possible...don't want acid to damage the bolt hole threads. Take yout time and take it slow, a section at a time. Good Luck!