Re: ’57 35hp flywheel compatibilities

[johnyrude200]

Well I’m up the river with no paddle again. Just received a 1960 40hp flywheel compliments of ebay, only to find that the flywheel keyway is different. The rest of the flywheel at the casual glance appears the same as the ’57 version. The casting number is the same too on both.

My question – is there a difference in the woodruff key between these two motors, so if I were to switch out flywheel keys, would this allow the newer flywheel to fit on this motor? The cranks come back as different numbers in the parts books.

The newer flywheel sits about a 1/4 too high on the ’57 crank, and the taper on the newer flywheel is shallower compared to the ’57 flywheel.

Thanks