mate untill you try the TS induction crankcase you have no idea of the power this thing makes , its a whole new world of power and RPM'S something youll never get with the stock CY crankcases , but if i had no choice but to use a CY crankcase i would use a stuffed crank as compulsory , oh and next thing im gonna try are the HRS ZERO DRAG BRASS CRANKSHAFT SEALS they are on the way to my destination lol