is high oil pressure normal?

[dmjensen]

Lately ive been noticing ive had high oil pressure while driving, is this normal or is there something im missing?

[dude8383]

Does it come down once the car warms up? What pressures are you seeing??

[dmjensen]

No, its sitting around 40 at 2000rmps and 20 at idle, usually its like 10 at idle.

[jaywood]

Where is your sender located? At the end of an oil line? If so, what size is the line?

[dmjensen]

Its in a cross fitting in a line one side is the oem sender and the other is a vdo 100psi elctric sender, those are perpendecular in my oil feed line

[jaywood]

Any pics of the setup? How far up on the line is the sender? What size is the line? -4AN? -3AN?

[blueapplesoda]

for pressure it shouldn't matter how big the line is unless one end of the cross or tee is going directly to the sump, an that would cause low pressure.

Maybe something is stuck in the pressure relief valve. When cold mine will be around 40, but when warm, it goes down as low as 5-10 or so. I have mine tee'd off with the oil feed on the turbo so it may read slightly low.

[jaywood]

Sometimes a restrictor increases pressure as well as decreasing flow. Think about putting your thumb on the end of a garden hose. Your thumb is a restrictor. Pressure is increasing and water is shooting further.

Just a thought

[dmjensen]

Im thinking i solved the problem, i had one of those oil breathr filters on my valve cover and it was smashed in the hole instead of over. So i think my crank case wasnt being ventilated because its fine now. So ill just leave the filter off for a bit.
But blueapple i think your right, thats how my pressures were before this started happening. But i know i have a leaky rear crank seal so i figured pressure should be lower than what was happening before i took off that filter

[jaywood]

For the breather you should get a 5/8" hose and run it down to the ground

[dmjensen]

That was what i was thinking, i dont beleive in catch cans so hose it is

[einstein57]

Sometimes a restrictor increases pressure as well as decreasing flow. Think about putting your thumb on the end of a garden hose. Your thumb is a restrictor. Pressure is increasing and water is shooting further.

Just a thought

That's only true when fluid is flowing through a device. When its just a sensor it has no exit so it will just see what ever the pressure in the system is. The sensor itself is calibrated to the surface area of the port.