On my newly rebuilt engine I am getting about 70 pounds oil pressure at start up and it drops a bit at idle. After the engine warms up to temperature it maintains about 70ish at 2500 RPM and 25ish at idle. After a run of about 25 miles on Saturday the pressure at 2500 was down near 50 pounds and below 20 at idle.
I can not remember what I did to the oil pump during the rebuild. The engine had all new bearings. I thought I had seen some drawings showing the allowed clearances between the pump inner rotor and outer rotor. The spare pump I have has about 0.008" to 0.010" clearance at the closest point that the rotor tips.
The book I have only mentions the clearance between the rotor and cover plate.
As I have an inspection pit removing the oil pump to check it should not be too much of an issue.
David
I can not remember what I did to the oil pump during the rebuild. The engine had all new bearings. I thought I had seen some drawings showing the allowed clearances between the pump inner rotor and outer rotor. The spare pump I have has about 0.008" to 0.010" clearance at the closest point that the rotor tips.
The book I have only mentions the clearance between the rotor and cover plate.
As I have an inspection pit removing the oil pump to check it should not be too much of an issue.
David