Does anyone know what the flow rate is from the OMP?

Unfortunately, I don’t know what year the pump is from.  It is on my 20B which has a 12A front cover.  It is a 4-port, likely from a 13B, in which one port has been blocked and the other three go one to each rotor housing.

The only data I have on hand is what Richard measured some years ago, running the pump at 6000 rpm.  This could useful if I knew the ratio of pump speed to eccentric shaft speed.

Thanks,

Al