Calculating oil pump requirements

[buzzinhalfdozen]

Originally Posted by SSDiv6

Could you elaborate what do you mean by too much oil?

SSDiv6 Too much oil pump, Pumps more oil GPH than engine requirements. FED 387, I'm running the pump @ 45% engine speed, yes I'm aware of the adjustable pressure regulator, set @ 50 PSI cold, really never loses any pressure. Problem with (in my mind) slowing the pump more is I'm also slowing the scavenge stages, maybe it's not an issue I don't know or maybe I need a smaller pump section and keep the current scavenge, I'm certainly no expert on this hence the questions. Thanks for all the replies. Joe