Hey guys, Im replacing the cam chain on my 1978 cb750k how hard is it to pull this old cam chain through.....My cam is now lined up at the marks for 1-4 and on my tdc for 1-4 on the crank. should this chain be easy to pull through with the tensioner removed from the back of the engine.
I think I read somewhere that you help the chain through by turning the crank..... Wont this interfere with the position of the valves when the chain is cut and the cam is not moving....PISTON CONTACT WITH THE VALVE!!!!
I just want to do this right!!!
Have you procured a master link and a way of peening the ends? (link tool)
Realizing that practically no one has replaced a chain on a CB750 this way, though it is theoretically possible, so there will be few who can tell you for sure the "right" way. (its the only way on a CB450 for example).
I would think you are correct and a piston could hit a valve if you turn the crank with the cam installed. You could pull all the rocker arms, leaving the cam in place, and then turn the crank if necessary.
With the rear tensioner gone, I think the chain should pull through easily. Attach the new one to it with safety wire twisted together. If you need more room drop the cam sprocket off the cam.
