Oil Pressure On A Gtr

[frankxinyu]

hi guys, was just wondering, what oil pressure reading should you have on a stock GTR? just trying to see if mine works all right or not.

cheers

[33apx]

should be around 3.5kg~4kg.

whats happen with yours!!

[frankxinyu]

well, mine is really low atm, it sits on 2 when its idling( sometimes even below 2 if its hot), it comes up when the rev is up, then drops back down. really hope my oil pump is not f**ked, since i havent got enough money for a engine rebuild.

[hanyou]

just wat i wanted to know hahaha... mine is sitting on jus abit under 4.

[arbess]

Mine sits around 4 in the morning for warm up. Once the oil gets to 80-90*C it will then drop down to around 2 i think. after a long day it will idle under the first bar (Not the zero bar obiously). I have been told that when its low after a long day, its ok because oil is all over your engine and doesnt need to be pumped at high pressure.

Other wise the guage is stuffed. =) See a mechanic to know when your oil pump is on its way.

bye

[whitesky]

interesting post guys. My 32 GTR and one of my best mates with same car, have totally inconsistent readings.

I usually have 4 on warm cruise, but some times after idle ( at lights etc) it barely makes 2. I get a bit concerned and stare at it, then 10 seconds later its 4. ( irrelevant of revs )

Never the same each day.

We have come to the conclusion that the standard guages are a bit dodge.

The best way to put your mind at rest is to put in an aftermarket guage.

I have a Greddy one on the way, will tell u how it goes.

Dont sweat, it may just be the guage.

[frankxinyu]

thanx for your input guys!

started up my car this morning and the oil pressure was up to bloody 6. then it drops back to around 3. Then during hot times in the afternoon after ive been driving it, it sits at just above 1. it got me worried coz someone was telling me basically my engine is stuffed and a rebuild is needed. but i dont see any smoke or nothing coming out of the zorst, also the engine runs really smoothly without any miss firing or undue noise. so i guess its all right then.

getting the car checked out next week, so ill know for sure. at the mean time, i was told 1 bar is the low end of ok zone, as long as the oil pressure light is not on. again, as someone said, it could be the sensor or gauge, or even bad oil.

any way, ill let u guys know. cheers!

[djr81]

thanx for your input guys!

started up my car this morning and the oil pressure was up to bloody 6. then it drops back to around 3. Then during hot times in the afternoon after ive been driving it, it sits at just above 1. it got me worried coz someone was telling me basically my engine is stuffed and a rebuild is needed. but i dont see any smoke or nothing coming out of the zorst, also the engine runs really smoothly without any miss firing or undue noise. so i guess its all right then.

getting the car checked out next week, so ill know for sure. at the mean time, i was told 1 bar is the low end of ok zone, as long as the oil pressure light is not on. again, as someone said, it could be the sensor or gauge, or even bad oil.

any way, ill let u guys know. cheers!

Before you rush off & start replacing anything do a search for oil pressure - there are about a bazillion posts on the subject.

A couple of things:

The oil pressure will always be higher on a cold engine thatn on a warm one because the oil has a higher viscosity when cold.

The oil pressure sender unit on the Nissans is known to be rubbish. It will send erratic pressure readings to the gauge. Hence before you get anything removed check the pressure sender unit either by substituting it with a known good one or by getting a mechanical gauge put on the car by your mechanic as a test.

The overwhelming probability is that the send unit is stuffed & the engine is fine. It will cost maybe a couple of hundred dollars if you want to replace the sender unit, but most people don't even bother doing so.

Edited March 31, 2006 by djr81

[benm]

My oil pressure is always between 4-6 no matter if I drive a 10km trip or 200km.

[HR32_GTS-T]

personally i would never go by a factory fittef oil pressure gauge, for one skylines always seem to have problems with them, just save a lil money mate an get a fairly good quility aftermarket oil pressure gauge. Depending on brand/ size, ur looking around 80- 140 bucks.

[frankxinyu]

thanx guys, problem solved, its the sendor unit broken, which was leaking oil through it. then put on a mechanical oil pressure gauge, it was reading 2.5 bar hot idling, which is fine.

[beefy]

A lot of the Oil Pressure Gauges on GT-Rs are faulty. Mine sits on just under 3 most of the time but some days it sits under 2. Restart Car and it is back up to just under 3.

Also depends on the Oil you use. The Full Synthetic Oil will usually make the reading a bit lower.