Anyone know what would cause high (75 psi) oil pressure all the time? This is with a mechanical gauge in the spare port on the oil filter head. I have pulled the regulator spring and shuttle out and all seems fine there. Oil samples are good. I'm not too concerned, but I see others with varying oil pressure from idle to full load.

 

So, its stuck at 75 psi and does not move? If there is no movement, I'd suggest your gauge is the issue... test it with another...

 

THe gauge is OK. It zeros when the engine is turned off. The gauge is not on permanently, I have it set up with quick connect to snap it on when I want to. The 'problem' is that the oil pressure is always at the relief pressure when the engine is running.

Since I am not using / losing oil or blowing seals, I don't think having 75 psi oil pressure is really a problem, I was just curious if anyone knew possible reasons for it.

 

Does your quick disconnect have a check valve? Is there a kink in the oil pressure line to the gauge?

I thought I had an oil pressure problem; wound up being the sending unit. Yes, I have electric gauges.

Cold...60-80psi, depending on RPM's
Hot, idle...12-20psi, depending on load
Hot, 2500rpm....45-55psi, depending on load

Tony