shiners780

My factory gauge was reading 4-5 bar all the time. I just replaced the oil pressure sending unit. I let the car idle for 15 minutes or so and it still reads 4-4.5 bar. How long should it take for the oil to warm up and the pressure to drop at idle? Is 15 minutes not long enough?

The car isn't street legal, so I can't go drive around. Oil is 20/50, temp is around 70, coolant warmed up normally and fans kicked on. My concern is the oil pressure staying over 4. Did I just not let it warm up enough? How long should it take before the pressure drops to 2-3?

Thanks in advance!

Willard Bridgham 3

Check the oil pressure with a hand-held gauge that has been calibrated.....could be your gauge.

My completely rebuilt engine w/2000 mi runs 4.5-5 bar above 4000 rpm and 2.0-3.0 bar at idle w20/50 Red Line and the cooling fan cycling. My dash gauge is calibrated.

Run probably 20 min and not that hard. I have a KISS oil cooler.

M Berg

Idle gives not enough load that creates oil temp, you have to run it with load.

shiners780

OK, well since I don't have a hand held gauge, I guess I'll just take it to the track as is and hope for the best. Sucks not being able to test drive on the street.........

DanR

my car with a rebuilt engine 2500 miles ago is normally at 4 / 4.5 idle after a normal driving sessoin, only after a hard track session do I come back into the pit and it is at 3 idle

shiners780

That is reassuring, thanks Dan!

special tool

No, its not.
You are describing and engine with excellent clearances and modern engine oil.

Don't ****** defeat from the jaws of victory.