The max is .015 But i thought that .02 would be fine, since you cant put material back in,or on the crank. So i finished the rebuild and started it up and i can hear the bottom, sounds like a solid lifter cam or something in that nature,I had the crank turned .010 and plasigauged everything,everything was in spec. but not the rod side clearence. i was just wondering would that make a low knocking sound. thanks for any help.