rotor bearings usually have to be really bad to affect the oil pressure on the level that the stat gear bearings will. the rotors are the last things to see the oil and the eccentric rotation usually takes up the slop quickly.

being that the stock gauge is buffered it won't show eccentric slop oil losses, if you plug in a cheap mechanical gauge it will show if the rotors are likely a main cause because the oil pressure will be very bouncy with each rotation of the engine.

my F-250 before i had replaced the main/rod bearings i could watch the sloppy bearing bounce the needle as the engine was running, but it had 3 spun bearings.... yet still towed 15k lbs 500 miles over steep inclines 2 times!

 

Yes but the only reason I am questioning is that this motor has 1000 miles on it. And the rotor bearings were replaced 1000 miles ago at the rebuild and the stationairies were not with already 60k+ miles on them.

Here is a pic of my front stat gear bearing. There is wear but it is not completely deystroyed which makes me think that my brand new rotor bearings are not this bad especially when I never saw any considerable amount of metal in my oil.

 

doesn't look bad enough that i would think they should cause lower oil pressures. if it had copper showing nearly all the way across, sure.

 

Well damnit. Maybe my eccentric shaft has some wear and the combination causes low pressure. If these stat gear bearings and replacing my pump does not solve it then I am truly stumped.

 

start measuring stuff.

the motor i'm building now came with bearings that looked like that and they aren't round. i've also found that the oil pump looks ok, but measuring it reveals that its basically worn out (its in spec, but just barely). the eshaft has a bad flywheel nut thread, so i didn't measure.

so you can have parts that look ok, and actually are ok separate, but putting them together would be bad.

and B i've bent bearings pressing them in. so IMO you need to check the new bearings too