Is it possible to remove the crank sprocket for the timing set without pulling the timing cover? I'm thinking remove the upper sprocket, remove the crank pulley and oil pump, and it ?maybe? would slide out. I don't want to remove the timing cover because it doesn't leak a drop of oil after the rebuild. (EB has a 4* advanced sprocket I want to try <img src="/forums/images/graemlins/shiner.gif" alt="" />)