Well when you here about people running 12's on NA they are making approximatley 10-12 hp per 1 compression....and if you go 14:1 compression, you will make more than 10 horepower as long as you are using a decent engine...

and an h22a1 with 10:1 compression jumps up 10 hp compared to a jdm h22a with 10.6:1 compression being the only difference...


To the guy who gained 7 hp who jmped up a few compresison points....that is possibly ebcause you didnt break in your engine enough before you dynoed it....it makes a huge difference

more of the faster n/a cars i seen use a bigger bore and around 12.5:1 cr...i seen 13.5:1 cr before..but the power wasnt great out of it

i would like to see you use a real high cr with your bore..

not to ride dick or anything but greaser has built a few motors and has put down more than 400rwhp on a stock block SR. i think he knows how to break in a motor.

Ive never heard of 14.1 compression before tho myself..usually the bore is no more than .25 .... really forreal forreal, on his engine (guessing it is some type of honda/acura engine) he will get more power by upping the compression than boring it out ....and i would still really like to know what kind of engine this is that we are talking about...i certainly hope its not a d series engine, because if it then scratch everything i have just said

endyn makes 14:1 pistons..but i believe for a 82 mm bore..im not sure

forreal forreal? :eek:

yeah they make them

i dont doubt it, i was just making fun of how he said forreal forreal :p

some girl in one of my classes today said that and i started laughing at her