I know that others have addressed this issue in other threads, but I thought that I would try to derive some additional information. I have just finished my '47 FL and it has the ever-common oil pump check valve leak. I've tried the more common fixes like using Ted's seat cutting tool to try to cut a new seat, I've braized an old ball onto a short spoke and lapped the seat with fine valve grinding compound, etc, etc. The oil still leaks past the ball, the lower end fills up and pumps the excess oil out of the breather when the motor starts. Other than that, it really runs great!
A while back I believe Tom Cotton suggested grinding a new seat in the pump using a grinding stone. Good idea... Has anyone done this? If so, how can the stone be (and remain) centered in the hole while grinding? I would assume that a 30 or 45 degree stone angel would be correct ?? Finally, can anyone recommend what type of tooling I should acquire to do this and from where it may be purchased? I have access to drill presses and a Bridgeport.
Any alternate ideas are always appreciated.
Thanks,
Bill Pedalino
A while back I believe Tom Cotton suggested grinding a new seat in the pump using a grinding stone. Good idea... Has anyone done this? If so, how can the stone be (and remain) centered in the hole while grinding? I would assume that a 30 or 45 degree stone angel would be correct ?? Finally, can anyone recommend what type of tooling I should acquire to do this and from where it may be purchased? I have access to drill presses and a Bridgeport.
Any alternate ideas are always appreciated.
Thanks,
Bill Pedalino
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