oil pressure

[john555 0]

can anyone tell me what pressure my oil should be at also if anyone knows were you can get a oil pressure sender for my oil pressure gauge that would be great

[rigs 0]

If it's a VW gauge then VW will sell the sender. If it's a 3rd party gauge then you'll need to get the correct sender for the gauge.

Oil pressure depends on loads of stuff but roughly speaking it'll high when the oil is cold. When at full temperature as a rough guide it'll be ~1 bar at idle and 3 bar+ as high engine speed.

IIRC there is a 6 bar pressure limiter built in to the pump - someone who knows what they are on about might be able to confirm that.

[john555 0]

im using volvo gauges as the are use a one bar boost gauge which is good for my super charger i mite give volvo a ring and see about one of there senders

just wanted to make sure it would read a high enough pressure for my engine thanks

[FishWick 21]

You need a 10 bar sender for the VR6.

Cold pressure at idle ~ 4 bar

Hot pressure at idle ~ 2 bar

Cold 90mph cruise ~ 6 bar

Hot 90mph cruise ~ 4 bar

As Rigs says, it depends on a few things. Grade of oil you're using, condition of your bearings etc etc but generally speaking, if you see 2 bar at hot idle, oil pressure is good.

[john555 0]

will the standard oil pressure sender be able to run a gauge insted of just putting the oil light on

[rigs 0]

It has to match the gauge. It might work... but I doubt it.

Personally, I'd leave it as you're not going to be looking at the gauge all the time and having the buzzer go BEEEEEPP is handy if it's telling you your engine is eating itself.

If it's a volvo gauge you'll need a volvo sender for it to be sure. Get a T-peice that screws in place of one of the vw senders on the housing and takes both the vw sender and the volvo sender. That way you have both a gauge and the VW oil warning systems.