Oil Pressure Gauge In R33 S1

[slaughter]

Hi guys,

Like the topic title says , i have a r33 s1 manual, just wanted to know what should the oil gauge sit at when cold and when warm? it sits at almost 8 when cold and then drops back to about 5 when warm, does runs fine just has a little miss on idle (which im working on atm to get diagnosed)

Any help would be great Thanks guys

PK

[krzysiu]

when cold it sits pretty high but mine doesn't reach 8. When its all warmed up it sits at 2 on idle.

And to answer your question, no they arent that accurate.

[sleek3]

yea mine goes up pretty close to 8 when cold and sits on 2 on idle or just below 2....but factory gauges are never accurate at all...and kris i want your GTS BADGE

[260tech]

Hi guys,

Like the topic title says , i have a r33 s1 manual, just wanted to know what should the oil gauge sit at when cold and when warm? it sits at almost 8 when cold and then drops back to about 5 when warm, does runs fine just has a little miss on idle (which im working on atm to get diagnosed)

Any help would be great Thanks guys

PK

Hi there, if you are worried you should be able to get your guage & sender unit checked by an instro tech in your neck of the woods, whether your measuring system be of the mechanical or electo/mechanical variety. Cold & hot oil pressures would depend on oil type for starters, existing wear on pressure bearing (pardon the pun) surfaces & oil pump efficiency kick in after that.

Oil pressure guage is reflecting degree of difficulty that oil pump is having in forcing oil through oil bearing surfaces. IE., it is measuring back pressure. The thing to be aware of is deviations from what is normal in your engine as no two motors/oil pumps will have exactly the same characteristics. Neither will two different (same make) pressure senders/guages unless they have been checked/calibrated on an "approved" type of test rig.

If your system is not displaying repeatability or is unreliable on any two given startup cold/warm run sequences then I would be getting the guage/sender checked first with a view to replacement then looking elsewhere if the measuring system proves up. But if your pressure comes up the same all the time in the two different states (cold/hot), you have not changed oil brands/types/viscosities & your engine is not complaining then I would not worry.

You would know yourself or at least have a fair idea when your motor is getting tired & in need of a birthday...........right?

My 2c, hope it helps.

GW

[slaughter]

Thanks heaps guys.

260 tech i should get it checked but yeah it does do the same all round, idle prolly sits on 3 and driving about 60kph goes to about 4-5, i was wondering, is high oil pressure good or bad? If my engine has higher then normal oil pressure is this a good or bad sign? I would imagine high oil pressure would be good?

[slaughter]

Thanks heaps guys.

260 tech i should get it checked but yeah it does do the same all round, idle prolly sits on 3 and driving about 60kph goes to about 4-5, i was wondering, is high oil pressure good or bad? If my engine has higher then normal oil pressure is this a good or bad sign? I would imagine high oil pressure would be good?

[br3ndan]

As its already been said they arent that accurate... buying and installing an aftermarket one would be the best and easiest opition to get piece of mind.

What kind of oil you running?

If the stock gauge is correct, that is running a little bit high. Better to run higher then to low.

[260tech]

Thanks heaps guys.

260 tech i should get it checked but yeah it does do the same all round, idle prolly sits on 3 and driving about 60kph goes to about 4-5, i was wondering, is high oil pressure good or bad? If my engine has higher then normal oil pressure is this a good or bad sign? I would imagine high oil pressure would be good?

Yup, so would I be happy with high oil pressure, providing always that the reading is not rediculous/off the clock. If the numbers you are quoting are accurate pressure wise for your motor & repeatable then I would not be worried. Quite happy in fact, particularly with idle pressure if that is on a warm engine. End of the day if you think it is all too good to be true & your engine is suggesting otherwise (rattling like a @#$% at idle) then get your system checked out. You don't need to get your system calibrated, get a test guage fitted & a chart of the results (idle kpa/indicated, 2000rpm/3000/4000 etc) so that you are aware of th inherent accuracy or otherwise of your system.

That's all.

Cheers GW