Jump to content
SAU Community

2kg/cm3 Oil Pressure

locky

By locky,
in General Maintenance

 Share

Recommended Posts

RellikZephyr Proficient

RellikZephyr

Posted
Posted
hi everyone

I have been reading the posts about oil pressure. I have a r32 gts4 and it has only got 2kg/cm3 of oil pressure when it is cold and stays the same when I rev it. checked this with a mechanical gauge. is it possible to be anything else other than the oil pump.

thanks locky

i have exactly same thing. but havent checked with mechanical. going off stock guage

car is r32 gtr

RellikZephyr

Beer Baron Grand Master

Beer Baron

Posted
Posted

firstly don't worry too much about cold readings. do the tests when the oil is over 80 degrees. for info, a healthy 32 GTR will be just above 2kg at idle and should be around 6kg when cruising at 3000rpm.

Omurru Veteran

Omurru

Posted
Posted
i had a problem with my car but it wasnt the exact symptons to what you are having and it ended up being a broken oil pressure release valve in the collar. hope that helps.

where's that?

I have the exact same problem as well, am working on it at the moment but freekin everything here is closed so i can't get the fitting i need. Mine goes up to 4 on startup then hovers around 2 while driving, regardless of rpm, engine runs fine though no probs, i'm hoping when i hook up an external gauge it'll read properley then can be narrowed down to either dash gauge or sender.....

Toasty Enthusiast

Toasty

Posted
Posted
where's that?

I have the exact same problem as well, am working on it at the moment but freekin everything here is closed so i can't get the fitting i need. Mine goes up to 4 on startup then hovers around 2 while driving, regardless of rpm, engine runs fine though no probs, i'm hoping when i hook up an external gauge it'll read properley then can be narrowed down to either dash gauge or sender.....

i dont know. its what my mechanic told me.

nizmokid Mentor

nizmokid

Posted
Posted
firstly don't worry too much about cold readings. do the tests when the oil is over 80 degrees. for info, a healthy 32 GTR will be just above 2kg at idle and should be around 6kg when cruising at 3000rpm.

Hi Beer Baron, what would be the reading on a healthy R33 Gtst?

Beer Baron Grand Master

Beer Baron

Posted
Posted
Hi Beer Baron, what would be the reading on a healthy R33 Gtst?

it's very similar. between 1 and 2 and idle and between 4-6 at 3000rpm cruising. all at operating temp of course. in my experience the stock gauge has been fairly accurate, just very slow reacting. my defi BF moves around as fast as a tacho! the stock one just slowly creeps around.

vhs2 Collaborator

vhs2

Posted
Posted
cheers guys have decided to put a new motor in as compression all over the place and turbo is on its way out. the oil pressure still doesn't move above 2 at any rpm

hey my r34 non turbo sits at 6-7 at cold start and in normal running conditions its sitrs between 4-5..and wen the revs goes higher it hits 7max..is that normal

Omurru Veteran

Omurru

Posted
Posted

Ok just for you guys info. Got an external gauge hooked up today and just tested the pressure staticly neutral revving it. got the following readings:

At start approx 50psi then drops down to 22-26 at idle.

2000rpm - 43psi

3000rpm - 60psi

4000rpm - 71psi

5000-8000psi - between 70-80psi

If you want kg/cm3 divide by 14.2

Now I been told you want approx 10psi per 1000rpm and thats something to aim for with any engine of any age? now i am getting more like 20psi per 1000rpm dunno if this is just because it's under no load or its a turbo engine or what. Any ideas anyone. So guess i will be off to the nissan dealer tomorrow to try and get a new pressure sender and maybe a dash gauge if that doesn't work.

Also just for the info the oil pressure relief valve on an RB26 and I am assuming all Rb engines is on the bottom of the oil pump and its a sump of job to get to....

GreddyGo Rising Star

GreddyGo

Posted
Posted

Yours does seem pretty high!

Especially as you rev higher, Oil pressure isn't supposed to climb that high when reving a car, that's what the relief valve controls.

I would definitely start checking it out. You might start popping seals etc.

-Josh

Omurru Veteran

Omurru

Posted
Posted

lol it's not high dude, infact it's pretty spot on.....5.6kg/cm3 at 8000rpm. it just seems to climb fast and then level of, I suppose thats not such a bad thing really. although it's an n1 pump so it does flow more. Will be interesting to see if it comes up with similar figures under load.

Anybody know when the relief valve opens?

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now
 Share
Go to topic listing


  • Similar Content

  • Latest Posts

    • JC71
      new 1.5 LSD issues/concerns

      By JC71 · Posted

      Clutch is a spec brand, new clutch system,( PP, flywheel, friction disc, etc. pull type) installed 100 miles ago, with no problems.
    • JC71
      new 1.5 LSD issues/concerns

      By JC71 · Posted

      looking for some help and maybe some insight on others experience with a new LSD. R34 GT ran and drove beautifully, but always alot of grip loss due to the open R200 rear end, so I just installed a new 1.5 LSD way into the stock open R200 for a ER34. Simple. Everything seemed right. I test drove for the first time this weekend. as I started to back out the garage the first time slowly with tires straight it sounded and felt like I had a loose or half disconnected drive shaft...that was clucking around loose and shaking entire vehicle, and making it feel like the trans clutch was spontaneously slipping then grabbing very roughly while just letting out pedal slowly. I backed it out went to pull forward with the same noise, shake and slip grab feeling with hesitation, I turned the tires to back out more and then pulled ahead some same thing but worst because of added wheel resistance (which that I expected) puzzled … pulling it back in checking everything over and finding nothing wrong, I tried it the next day. same thing, couldn’t believe how it shook everything again making a terrible noise and making it feel like the trans clutch was slipping and grabbing, but I got it out of garage into the driveway, got it straight, drove forward and then reveres a few times in a straight line everything shaking , causing what felt like clutch slip and grab every time, sounded like right behind front driver tire and I could feel it in the floor board with my feet,... worst right when beginning to let clutch pedal out to engage slightly, shuttering and sounding terrible along the way…I managed to slowly get down the road, babying it the whole way, once I was rolling (out of 1st) seemed to be better and between shifts, then clutch felt closer to normal…not slip/ grab etc., but back down to any stop, straight road or turning, same thing. Made no difference if all tires were straight or if I was turning. All other gauge read out correct. with in 2 miles as planned I reached the empty parking lot and performed the break in procedure that came with lsd, essentially to drive in a figure 8 a bunch.  Did this, binding chattering, and shaking the car the whole way. I drove it back home seemed somewhat normal once I was in straight line and past 10 mph or so, and I know it will “bind” on corners and cause some tires squeal when turning especially from a stop, but when I begin to move it still causes what feels like the trans clutch to slip and jerk badly as well as shaking the entire car, and sounds terrible, that I didn’t expect. I used the fluid they supplied with LSD kit and did the breaking, planning to change fluid as they suggest after breaking, but wondering will it get smoother or less aggressive with use? maybe a 1.5 is just too aggressive for normal road driving?   I have a LSD that I put in my 71 cuda when I restored it, with amazing smooth , quite yet effective results. Different style LSD but that ones a joy to drive. maybe expecting too much from this R200?
    • Matt Z
      SAU NSW - Archies Flame Grille Meet & Cruise to Kurnell

      By Matt Z · Posted

      Join SAU NSW for a flame-grilled feed & flame-spitting cruise! Sunday 17th August 2025 3:30PM Meeting Archies Flame Grille Sylvania Waters 4:45PM Cruise Departure 5:15PM Arrival at Cape Solander Kurnell Meet Location: Archies Flame Grille Final Destination: Cape Solander Kurnell *Disclaimer* There will be a lead and follow car so no one should get lost. If you would like to attend or bring others along please put your name down and a +1 as numbers will be needed prior! This is NOT a race and we will all be adhering to all road rules. If this is what you want please come to one of our many track days. This is an official SAU:NSW event and will be run under a CAMS permit. One of the things that really sets our club apart is our commitment to being true enthusiasts. When on normal roads we strive to maintain good relations with the authorities as well as the public in general. When attending one of Skylines Australia NSW events please try to: • Be aware of surrounding environment and act accordingly. • Drive courteously on the state’s roads as a true enthusiast should. • Understand how important it is to maintain the good name of SAU NSW and thus, treat others accordingly. • Any misbehavior will not be tolerated and you will be asked to leave.
    • Ozdavroz
      WTAC 2025

      By Ozdavroz · Posted

      Yeah good luck out there! Will be good to see a mighty GTST going harder than the GTRs
    • bcozican
      WTAC 2025

      By bcozican · Posted

      i will be there 😁
×
×
  • Create New...