im thinking about stock itr pistons in an ls/vtec....what do yall think?

 

i answered this in ur other post. is the head milled? and do you plan to advance the timing?

 

no the head is not milled and i didnt plan on it, and should I advance timing or not? Either way i want to know if its too high comp for ls/vtec

 

You can safely run those pistons on 93 octane. And yes you may end up advancing the timing.

One thing a lot of people forget, is that JDM p30 pistons yield about 11.5:1 compression on an LS/VTEC and have a flat top. The flat top of the piston allows the flame to travel a greater distance at a faster speed. The result is a more complete burn of all the fuel in the cylinder equallying more power.

Don't let the big dome of CTR/ITR pistons mislead you. Sometimes smaller is better. In this case, on a street engine, p30's would be perfect.

Jay

 

yeah he pretty much summed it up

 

ok and what are the p30 pistons out of? what block?

and thanks for both of yalls replies

 

You can buy them at jhpusa.com

Let me know if you have any other questions.

 

JDM b16

 

p30 came from obd1 jdm b16s and usdm b16a3's from the 1994-95 del sol dohc vtecs

 

what about putting my b16 head on a gsr block? is that better than ls/vtec, and whats all involved with plumbing on the "poor mans type-r"?