Oil Pumps - a multitude of styles

Pretty much what Mattax said.


Once an engine is fully warmed up, a standard pump is not going to put out much more than maybe 65lbs.

Stock clearances and 6000 rpm=stock pump.
Add loose clearance to that and you should still be good at under 6500rpm

Add 7000 rpm to that and now you should run a high pressure spring.

Add full groove bearings to the above and now its time to fit a high volume pump with the high pressure spring.

Most people are fine with a std pump.
But ultimately the bearing clearance and rpm usage are the deciding factors.