Wilson,


The Perry Oscillating Pump does not need a hole drilled anywhere.
It is simply mounted on the engine; preferably by the top two back-plate bolts.

It is operated by the very small movement (adjustable) of its pumping element, due to the engine's power pulses.
In other words, the engine, by vibrating operates the pump.

The Perry Pump Regulator does need a hole drilled in the engine's crankcase, or back-plate and a pressure fitting installed, since it operates by utilizing the crankcase pressure changes, or pulses, to move its pumping element back and forth.
It is not have to be mounted on, the engine, or the mount.

This regulating pump will not work well with air-bleed carburettors.


Battery powered pump??? Who makes one? How does it work?