Oil Pressure

[maka]

HI all

Is anyone able to tell me where the oil pressure is supposed to sit on idle on an engine at operating pressure..

Or any info as to where yours sits.. would be awesome.

I think mine is a bit low, and i think the oil pump may need replacing..

Any input would be great..

My car is a R33 gt25t, and has just had the bearings replaced, cause it has previously spun a bearing...

So just wondering if this may be the cause....

Thanx in advance..

Mark,

[H@ME]

mine use to sit above the middle mark on the factory gauge however since i changed the oil to hell helix 5w-40 it sits right on the middle mark.

[(OO)SKYLINE(OO)]

On idle after warm up it sits very low or bit above the 1st white bar.

I believe its normal, I had a Nissan 280ZX and did the same thing.

Its only on start up it goes rightup.

When you revving / driving its goes up abit above the white bar.

[maka]

Thanks guys... will look into it further... could be only the factory gauge causing issues...

Cheers..

[DazWah]

mine goes all the way near the top when engine is stone cold? :S is this bad? when it gets warm it drops to around half way or a tad higher

[H@ME]

again i'd say it depends on the oil's people are using? thiicker vs thinner (synthetic) just let the car warm up and allow the oil pressure to drop before you go boosting away n all should be ok

To the original poster, if u have access to another r33skyline try hybridising the factory gauges to see if thats your problem.

[(OO)SKYLINE(OO)]

mine goes all the way near the top when engine is stone cold? :S is this bad? when it gets warm it drops to around half way or a tad higher

Normal.

When the car starts up its gotta get the oil pumping which takes afew mins. Once oil has circulated the pressure drops / sits halfway / below.

When you rev the car hard you should see it pump up alittle again normal.

[Duncan]

about 25psi/200kpa at idle warm is right, often thinner oils will go as low as 15/150kpa.

And it could be your motor was not rebuilt with the correct clearances.

Start with a mechanical oil pressure gauge to check things out

[Bliksem]

Mine sits slightly below the second bar, thats with a brand new RB26DETT Pump