Do builders cut 2 mm out of a stock head to clear the 4mm crank?
I picked up a shee last week and it was advertised a 400cc by alba but it didn't have the plate. It had no port and 310 jets and the pistons are coated in carbon because the jetting was rich. I can't read the top of pistons with video scope. Any other way to check besides tearing it down?
I put 290 mains and its good now