And worst case is the chain breaks and balls up between the countershaft sprocket and the engine case, putting a hole in it.$$$$$$I guess I should elaborate a little... the sprocket will be ~1.6mm wider than the gap between the side plates of the chain. If you tried it anyway, the chain would briefly ride around the outside of the sprockets... then since the chain isn't being engaged by the sprockets fully, if you tried to apply power to it there would probably be some major chain slipping happening. The best case scenario would be the chain and the sprockets both being destroyed.