Originally Posted by LuckyH

I think it matters on which B20 you get. I thought the stock B20z had 9.5/1 compression with a redline of 6800. And isn't there a B20b which has lower compression, like 8.5/1 and a redline of 6200. I wonder what's the difference in volume between the stock B20 head and the B16 head as far as raising/lowering compression just from switching heads. I wouldn't mind having to install some aftermarket rod bolts if it meant a lot more reliability, the motors probably only going to see aboe 7200rpms a couple times a month. It just seems like a waste of money to spend $1500 to have a stock motor.