Originally Posted by Kawidad
Has anybody been in there before? It looks like installation error. I've seen it before when someone installed the flywheel without proper care.
Looks like a sheared flywheel key, he did say the flywheel came off easy...sounds like it was loose to me.
OP, please tell me you're splitting the cases and replacing all the lower end and trans bearings that you can afford, you're almost there already.