Calculating oil pump requirements

[SSDiv6]

Originally Posted by Ed Wright

It would be slick if you could run a factory pump at a constant speed with n electric motor to measure how long it takes to pump a quart, or whatever. Do they rate them in gallon an hour, like a fuel pump? (I'm thinking not) Then do the same with your dry sump pump. Might be a trick to get an electric motor to run at a constant RPM with both pumps. May be easier to do it off a gasoline engine. It would be interesting to know if shortening the housing and impeller 10% would get a 10% drop in volume pumped.

During the 1980s I ran an "outlaw" sprint car on dirt, (didn't drive it, you can hire crazy people for that) with a Peterson dry sump set up. I felt like it was way more pump than I needed. Never did play with that, making enough power was never an issue. Always wondered about that pump. I'm sure it was over-kill in size to cover their tails.

Ed,
Oil pump flow is measured in GPM. The flow will vary based on the relief settings.
Your best best is to call the tech guys at Peterson or Dailey.
This link is a good article regarding engine bearing lubrication:

http://www.epi-eng.com/piston_engine...e_bearings.htm