i am putting a vtec z6 head on a d15 block, my mechanic said i shouldnt take the risk cause my pistons wont be able to handle the new compression.... but i dont think the compression changes 2 much.... wut do u guys think?

 

a mini-me swap is a VERY common swap, dont worry about it man. If the compression got messed up that bad, a large part of this forum would have messed up engines.

 

yea but my fear is that my connecting rods and pistons would go on me.....i noe a lot of people have done this swap but u can neevr be 2 sure

 

You will be fine. You could even shave the head a bit to bump the CR if you want. Where people get into trouble is over-revving their mini-me's. I guess because they are vtec they think they are indestructable. Stock bottom ends should not be revved over 7200 rpm, even if your top end can handle it.

 

http://zealautowerks.com/dseries.html

 

d15s have been able to handle 180hp on boost. a d15 with a z6 head on it might make 130 hp with bolt ons so you will be just fine