Ok...I can have the head milled, no problem. But, for obvious reasons, having the block surfaced is gonna be a PITA. I have a 91 CRX with about 175,000 miles on the engine. Could I get away with just surfacing the head?

I understand that the Honda gaskets are designed to seal with up to .004" of clearance. What are the odds that I'd have that much space if I were to surface the head, but not the block?

Also, where can I get a level to check the surface of the block? And another thing, a professor at SDSU, an automotive engineering expert, says tehre's a kind of hand-held mill-file that you can drag along a block surface, and it will take down any high spots. Anyone ever heard of this? thanks