agree with the concept of there being any marks on the flywheel or crank. in my experience you can mount the flywheel in any of the twelve positions available with no adverse consequences.

the flywheel weighs 38 pounds. if his is 250 grams off it is just from uneven wear. have your flywheel planed before reinstalling it. you should in any case. you will be fine.

tom w

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[SIGPIC] Diesel loving autocrossing grandpa Architect. 08 Dodge 3/4 ton with Cummins & six speed; I have had about 35 benzes. I have a 39 Studebaker Coupe Express pickup in which I have had installed a 617 turbo and a five speed manual.[SIGPIC]

..I also have a 427 Cobra replica with an aluminum chassis.