Wiseco is a good choice to. I have a Wiseco 102mm (686cc) 11:1 molly coated piston. So far so good with the piston, To bad my sleeve sunk & is getting re done along with new ring's, but the piston is all good102mm 11.1 compression 11.5.1 max CP or tech piston![]()
and that's why i stated it was a Kenz built +2 motor.a 12:1 piston will only work with a big cam. with a stock head and cam, you will need a race gas mix. it may work for one person and not for another. so i wouldn't risk going that high. 11.5:1 is the max safe compression for 91-93 octane.
:thumbsup: good explanation and final advice.to the OP: what is being stated with these last two posts is that cam profiles and elevation also affect fuel octane requirements as well. with the proper cam at high enough elevation, a 12.5:1 piston can be ran on 92 pump. now that you're confused i'm sure, the best advice is to call a reputable builder and request reliable advice for your specific application.
thank you for pointing out the error i made, i should've been more clear in my first post.good explanation and final advice.
Me and a buddy of mine ran a racers edge 12:1 with a +1 head and X2 for over a year on 91 with no problems. We are 900 - 1200 fti run 92 pump with a 12:1 Kenz piston, with no issues at 1000 - 2000 foot altitude. Kenz built +2 motor.