hey guys im new on here and i have a few questions. i have an 89 crx si with a zc engine. the car had a tap when i bought it and i wound up spinning a rod bearing, breaking the rod and busting the skirts off the piston. so i ordered parts for it thinking it had a swap from an integra but i just realized the pistons have different numbers on them. the one out of the engine has pm7 stamped on it and the new one has p29. i already got the rod and piston pressed so my questions..
are the rod and pistons the same size? are these gonna fit? uggggghhhh!
thanks guys!


Modified by FO SHO at 6:41 AM 1/10/2008

 

DOHC ZC I'm guessing? Most people think it's an Integra motor, but it ain't.

The PM7 pistons will work just fine, they're almost exactly identical to the P29s.

 

yeah sorry it is a DOHC zc. i was looking in the faq post about the pistons trying to find out but couldnt find anything. so the rod and piston are the same size? cause i ordered all the parts from acura.

 

i was looking in the faq post and read that the p29 piston is oversized? is it gonna work with my stock bore?

 

PM7 and P29 pistons are exactly the same - the JDM OBD0 DOHC ZC had PM7 pistons - the 88-89 Integra D16A1 and the JDM OBD1 DOHC ZC had P29 pistons

 

Heres pistons specs http://www.knology.net/~jediklc/dcalc.htm

 

awesome..thanks guys. thought i was gonna have to order new parts..haha

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by FO SHO &raquo;</TD></TR><TR><TD CLASS="quote">awesome..thanks guys. thought i was gonna have to order new parts..haha</TD></TR></TABLE>

Anytime