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sorry dont have any out right now,maybe this weekend I'll get one out and measure it for you, Hey great web site you sent me,didn't find out about the Merc vs Ford piston differances,but lots of other good stuff!! tony
ok,haven't done this since 9th grade,but I got a diameter of .753 , give or take an inch! my gage shows 7 and then 2 full turns plus 3 clicks. hope that helps, tony