Quote:
Originally Posted by skysurfer
Just started to dismantle my B20 engine for rebuilding. What is the best way to get rid of the oil, grease and old paint on both ? And is it best to re-paint the block and head before or after the rebuild? Many thanks
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A lot of the larger machine shops have what is commonly referred to as a 'hot tank' for cleaning parts. That is the process that I would recommend as it avoids dealing with a bunch of nasty chemicals and the associated (ethical) disposal problems.
For painting, definitely do it after any machine work has been completed otherwise it will get banged up. If it has been hot tanked prior to the machine work, all you will need to do is a final surface degrease. Brake cleaner should suffice. I would also recommend that you etch the external surface prior to painting to improve adhesion. I think POR 15 metal prep will work for this; but, there are probably other products.