[jaykay]

Yes I remember this thing really wondered about what it actually does. I thought it was at the front of the engine and really hard to get to. There is an old post on here with a schematic. No idea on how search for it.

I seem to recall that it appeared to modulate the volume oil delivered by the pump. Good to know that there is boost in oil pressure when starting up. Guess you guys with an accusump could perhaps watch the accumulator modulate depending on what air pressure you put in there to test this thing??