At an
oil temp of 212 degrees and water temp of 196 degrees
Cold Start (idle) = 45-47 PSI
800 rpm (hot idle) = 20 PSI
1000 rpm = 26 PSI
2000 rpm = 32 PSI
3000 rpm = 35 PSI
4000 rpm = 35 PSI (no change above 3K)
I bypassed the remote
oil filter, Canton
oil thermostat and front mounted oil cooler just to eliminate a bad filter or psi drop from all of the plumbing. These are the results:
(+/-) values represent the net change from the first test above:
Cold Start (idle) = 46 PSI
800 rpm (hot idle) = 19-20 PSI
1000 rpm = 24 (-2)
2000 rpm = 35 (+3)
3000 rpm = 36 (+1)
4000 rpm = 36 (+1)
It's either the pump or bearings. Pulled the #3 main cap late last night and there was a little copper starting to show through in the middle. The saddle side of the bearing looked awesome. The crank was shiny and no scoring or marks. Will have to pull the rest of the caps this weekend to get a better picture.
Gauge is near brand new and I tested another gauge just to make sure. Same readings.
-Dean