Whats the bore size on a b16a2? i want to order some 9:1 pistons but i dont know the bore size and there is all kinds. what would you recommend for turbo?

 

81mm is stock bore, but depending on the condition of the sleeves (scoring, out-of-round, and whatnot) you may need to overbore .030 to 81.5mm

 

its stock sleeves, so im guessing 81mm

 

yes, stock sleeves are 81mm just like i said in my last post. I'd be hesitant to snag a pair of 81mm pistons until i had seen the sleeves....your best bet is to get a set of 81.5mm pistons, overbore the stock sleeves .030 and start fresh

That's the way i'm doing it when i build my GSR....

 

alright thanks alot.