17-02-2024, 01:49 AM
Thanks for the comments.
I did not explain that the reason for the larger radius on the cam followers was to give a faster lift to the valves to give a better intake and exhaust passage.
I have also fitted a silicon gasket between the cylinder block and the crankcase. That may have compressed and reduced the valve clearances a little.
The noise is consistent across the motor (i.e. all tappets) and is there at all speeds.
I don't remember refacing the tappet screw heads so I may have had a setting problem, but that would probably lead to some tappets being louder than others.
Graham
I did not explain that the reason for the larger radius on the cam followers was to give a faster lift to the valves to give a better intake and exhaust passage.
I have also fitted a silicon gasket between the cylinder block and the crankcase. That may have compressed and reduced the valve clearances a little.
The noise is consistent across the motor (i.e. all tappets) and is there at all speeds.
I don't remember refacing the tappet screw heads so I may have had a setting problem, but that would probably lead to some tappets being louder than others.
Graham
Slowly rebuilding a '34 RP