***Clearances listed below are minimum. Some applications such as supercharged, turbo, nitrous and endurance applications may requireadditional clearance (.001-. 003"). Coldwater pickup marine applications may require an additional .002-.004".
Piston sheet calls for .0045 plus what is listed above. Could be from .001 - .007 depending on how you read it. I am hoping for some real expierance feed back from those that run JE pistons in a lake blower motor on gas. I know every motor is different.