oil pressure question
#1
Race Car
Thread Starter
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after rebuilding my engine the oil pressure has been consistently 3.5 bar above idle with Mobil 1 synthetic, 15W-50, and about 1.5 bar at idle with the engine hot. bearing clearances were fine when i built the lower end.
i'm suspicious that my oil pressure gauge is not reading correctly because i took off the gauge faces (and needles) a couple times and I think maybe i reinstalled the needle just slightly incorrectly.
is there another method of checking the oil pressure? another gauge i can plug in somewhere?
i'm suspicious that my oil pressure gauge is not reading correctly because i took off the gauge faces (and needles) a couple times and I think maybe i reinstalled the needle just slightly incorrectly.
is there another method of checking the oil pressure? another gauge i can plug in somewhere?
#2
Hitsquad Ninja
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1.5 is a tad bit low, but i wouldn't be too worried. when you drop down below 2 and get close to 1 that is way too low to allow me to be comfortable. but then again it might have something to do with the 15w50 being the thicker oil. if it has been sticking at 1.5 and not fluctuating at warm idle below that then i think you should be fine. we need our oil guru to chime in!
#4
Race Car
Thread Starter
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track/autocross or hard street driving
#6
Race Director
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Originally Posted by joseph mitro
track/autocross or hard street driving
Those pressures are what I saw using Mobil 1 15w50 on my 944-spec car.
I swapped to Amsoil 20w50 Series 2000 oil and got 1 bar more pressure both at RPM and at Idle.
#7
Nordschleife Master
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Has the top oil pressure moved? The pressure relief valve will open at 5bar. If you'r still getting 5 bar in highway driving, for example, then the sender is likely fine. It won't fail by measuring a mid-range value low without lowering the high end.
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#8
Race Car
Thread Starter
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the top oil pressure when the engine is cold is consistently 4 bar at engine speeds above idle.
the crank pulley bolt is tight. i've already checked. i may have to try the amsoil.
the crank pulley bolt is tight. i've already checked. i may have to try the amsoil.