Yesterday I finished the primary assembly of my O-320. Today I started checking the pushrod lengths. With everything installed, I am at least .140 long on the push rod.
I assembled everything, put the rocker in place and compressed the plunger. The rocker then sits high. an approximate measurement of the offset is about .125 (1/8") before I would slip the pin in both the boss and the rocker. My push rods are about the middle of the range, so I can only drop about .070 with shorter push rods.
Something must be wrong and the only thing that makes sense is that valves (re-ground) or the valve seats (new) were ground to far, leaving the valve stem sitting high. The cylinders were re-built by Harrison many years ago.
I am hoping that I missed something simple here. Any recommendations or ideas?
I appreciate anything you can offer.
Larry
I assembled everything, put the rocker in place and compressed the plunger. The rocker then sits high. an approximate measurement of the offset is about .125 (1/8") before I would slip the pin in both the boss and the rocker. My push rods are about the middle of the range, so I can only drop about .070 with shorter push rods.
Something must be wrong and the only thing that makes sense is that valves (re-ground) or the valve seats (new) were ground to far, leaving the valve stem sitting high. The cylinders were re-built by Harrison many years ago.
I am hoping that I missed something simple here. Any recommendations or ideas?
I appreciate anything you can offer.
Larry