I have a simple question for you guys. Do PM7 pistons fit in a D16Y7? I have heard they do, and boost up the compression pretty well. Is this true? Is there anything else i would need to get them to fit? Please let me know. Thanks!

 

They fit.

Compression calculator:
http://www.zealautowerks.com/dseries.html

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by jdmtuner_00 &raquo;</TD></TR><TR><TD CLASS="quote">I have a simple question for you guys. Do PM7 pistons fit in a D16Y7? I have heard they do, and boost up the compression pretty well. Is this true? Is there anything else i would need to get them to fit? Please let me know. Thanks!</TD></TR></TABLE>

what else are you planning on? what cam are you planning on with the y7 head or are you swapping the head for something else?

 

I was going to swap the head out for a Y8 with a Gude cam.

 

should be a fun combo, i'm putting together a similar combo except i'm planning on keeping the y7 head and getting a cam for it.

 

They'll fit but the piston height / combustion chamber volume with these parts will be much different. Not sure of exact specs, but if I remember right PM7 will put you somewhere above 11:1 compression; with the Y7 or Y8 head it may be even higher.

 

Use the Z6 head in the calc. Z6 and Y7 share chambers.