Jump to content
SAU Community

Recommended Posts

i have a built 26 with a trust oil pump and recently installed a just jap oil cooler and connected my defi gauge senders up.

oil pressure is good driving normally, but when i boot it, oil pressure stays above 6 bar until it reaches about 6500rpm and falls to about 3.5 bar by 8000rpm.

rev limiter is set at 9000rpm so would probably drop below 3 bar by then :thanks:

i also have fresh oil in there, castrol edge 10w-60

thanks,

luke

could be a myriad of things, the cheap coolers are not real good for flow but we ran twin JJR coolers on the car in my sig with no issues. remove the inlets and check to see if the inlet is half covered... some of them are and these coolers are useless. If it isnt this i would suspect incorrect clearances by whoever built it..

thanks for your reply,

what do u mean by check if the inlet is half covered?

another question, is it important which way the oil flows? ie. engine > filter block > cooler > back to engine

Edited by luke20t
thats called oil surge mate.

next time it does it. just stop acellerating. and it should leval out. basicly keep filling oil till it stops surging.

even though the sump is baffled and the oil level is almost on full on the dipstick?

depends what sump you have, stock gtr sump wont but if your running an rb rwd sump (assuming the car isnt a gtr) then there is every chance no matter how much oil you stick in there it is going to surge.. mine was the same

added more oil..

booted it a couple times and the oil pressure seems to be holding above 6 bar.

i cant believe how much oil i have put in now! close to 6.5 litres!

just hope this wasnt happening b4 i put the cooler in, because i never had it so full.

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


  • Similar Content

  • Latest Posts

    • My thinking is that if the O2 sensor is shot then your entire above described experience is pure placebo.
    • Here is the mess that I made. That filler there was successful in filling dents in that area. But in the middle area. I can feel dents. And I've gone ocer it multiple times with filler. And the filler is no longer there because i accidently sanded it away. I've chased my tail on this job but this is something else lol. So I'm gonna attempt filler one more time and if it doesn't work I'll just high fill primer the door and see where the issues are because guidecoat is of no use atm.
    • Ok, so I think I sort of figured out where I went wrong. So I definitely overthinked it, and I over sanded, which is probably a large part of the problem. to fix it, I ended up tapping some spots that were likely to be high, made them low, filled them in, and I tackled small sections at a time, and it feels a lot better.    I think what confused me as well is you have the bare metal, and some spots darker and some are lighter, and when I run my finger across it, it' would feel like it's a low spot, but I think it's just a transition in different texture from metal to body filler.    When your finger's sliding on the body filler, and crosses over to the bare metal, going back and forth, it feels like it's a low spot. So I kept putting filler there and sanding, but I think it was just a transition in texture, nothing to do with the low or high spot. But the panel's feels a lot better, and I'm just going to end up priming it, and then I'll block it after with guide coat.   Ended up wasting just about all of my filler on this damn door lol  
    • -10 is plenty for running to an oil cooler. When you look at oil feeds, like power steering feeds, they're much smaller, and then just a larger hose size to move volume in less pressure. No need for -12. Even on the race cars, like Duncans, and endurance cars, most of them are all running -10 and everything works perfectly fine, temps are under control, and there's no restrictions.
    • Update: O2 sensor in my downpipe turned out to be faulty when I plugged in to the Haltech software. Was getting a "open circuit" warning. Tons of carbon buildup on it, probably from when I was running rich for a while before getting it corrected. Replaced with new unit and test drove again. The shuffle still happens, albeit far less now. I am not able to replicate it as reliably and it no longer happens at the same RPM levels as before. The only time I was able to hear it was in 5th going uphill and another time in 5th where there was no noticeable incline but applying more throttle first sped it up and then cleared it. Then once in 4th when I slightly lifted the throttle going over a bump but cleared right after. My understanding is that with the O2 sensor out, the ECU relies entirely on the MAP tune and isn't able to make its small adjustments based on the sensors reading. All in all, a big improvement, though not the silver bullet. Will try validating the actuators are set up correctly, and potentially setting up shop time to tune the boost controller on closed loop rather than the open loop it is set to now. Think if it's set up on closed loop to take the O2 reading, that should deal with these last bits. Will try to update again as I go. 
×
×
  • Create New...