I have a 91 CRX, 1.5 with a 16 valve single cam head that I'm doing a valve job on. My question is, how much can I surface the head? I want to bump-up the compression and I am not sure on how far I can go on milling the head. Perhaps some of you have built a few or these in the past. Thanks

 

I wouldnt mill the head, whjen you do that, its a one way only street so to speak. Once you do it, you wioll never be able to go back. If you wanna raise the C.R., get pistons. just my $.02

 

Thanks--I was just curious

 

no prob, good luck!

 

Technically you could go back, because you could get a thicker headgasket to make up for it.

But don't do it. Not worth it.