k24/20 frank· Registered
Discussion Starter · #1 ·
Ok I'm building a a3 vtec killer (with a k24a1 head) with a type r crank and type s pistons. I'm guessing my cr is goin to b around 11.5:1. I know that 93 octane will b ok run with that but I was considering decking and milling the head to 30 thousandths. I know this will change my cr, but Idk to what. Let's say 12.5:1 would 93 octane b ok and if so what would b my limit? 93 is the only thing readily available that I know of around my area.