Nothing more than what I already took Gillio my dads fab guy took my flywheel overnight to make me a holding tool so I can torque it down.

Jerry I will do that after I post some pictures of the keyway tomorrow so I can get an opinion on whether I should replace the flywheel or not.

The crank case seal only came out the one time it was when I had the mount spacers wrong and broke the motor mounts and shot the flywheel into my stator cover.

Dez I'd imagine they're not original because the connecting rod is a hot rods connecting rod. I may try that stator trick but I'm thinking instead having a compression release put in my spare cylinder head when I have it milled and cut for o rings.

The fit between the two tapers and the torque on the nut is what keeps the flywheel from slipping on the crank.  The key is just for assembly alignment so that the flywheel is installed in time with the crank.  Once the nut is torque the key does not serve any purpose!!!!!!!!!!!!!

Keys are not very strong and will shear instantly when the tapers stop carrying the load.