RE: Whats the diff between a medalion crank and a td crank?
Yes-the external physical dimensions are the same-the porting arrangement is different. The TD has a large rectangular valve port, the Medallion a circular one of significantly smaller area. You can interchange them, but there will be some effect on performance either plus or negative, depending on which way you go. The difference in performance between a TD and a Medallion is not just the crankshaft-the two engines use different cylinders, different heads and different carb setups-and all of these differences have some effect on performance.
ChrisM
'ffkiwi'