Jump to content
SAU Community

Overheating

benny gtr
 Share

Recommended Posts

51jay Mentor

51jay

Posted
Posted

Check all the usual things Quality of radiator fluid, are you losing any? Thermostat fully opening? system retaining right pressure? waterpump not too wornout? condition of radiator interior ,hoses and water passeges? oil cooler? theres a start

Link to comment
https://www.sau.com.au/forums/topic/40243-overheating/#findComment-825714
Share on other sites
jlnewton Grand Master

jlnewton

Posted
Posted

Yep, GTRs run hot when giving them a bit of a hammering. I have been warned by many people now not to even think about taking the GTR to Q.R. until I have a nice oil cooler, a decent sump baffle setup, bigger oil pump, and bigger radiator. This has been told to me by Ernie (Skyline imports), Gavin Woods, Bruce (LEDA suspension) to name a few, and Sydneykid has also mentioned this. So unitil these things are completed on me car, my Sprint Events at Q.R. are over, not taking the risk.

I can get the oil temp in mine to the "near danger zone" with a quick drive through the mountains, hate to think what it could get to on the track.

Link to comment
https://www.sau.com.au/forums/topic/40243-overheating/#findComment-826263
Share on other sites
rb26dett Experienced

rb26dett

Posted
Posted
rb26dett, you think the TRUST cooler may not be up to the task ? What experience have you had and what do you recommend ?

Squizz, I have the same problem up around Nebo, temp climbs real quick. We should organise a drive.

the oil cooler is in my car. it holds temps to just above the 70 mark on the gauge while cruising...

but when i really get into the driving, temps still creep up, albeit slower...this is all experienced on mountain runs. if u don't pay too much attention to the oil temp gauge u'll find it sitting at half in no time at all...

plus i'm running about 10 litres of engine oil with a trust sump...still the temps go up....

and the runs are done at night...hate day runs too much traffic, plus it's cooler at night...also done with heater venting into cabin...n still...problems with oil temp

Link to comment
https://www.sau.com.au/forums/topic/40243-overheating/#findComment-835776
Share on other sites
Squizz Grand Master

Squizz

Posted
Posted
What's the ambient temp in the engine bay like when the oil starts to run hot. if you can get the engine environment temp down it may help. Didn't 'Godzilla' have coolers on just about everything

Just driving normally it's bloody hot under the bonnet. Some venting may be in order...

Link to comment
https://www.sau.com.au/forums/topic/40243-overheating/#findComment-835818
Share on other sites
japtaxi Grand Master

japtaxi

Posted
Posted
What's the ambient temp in the engine bay like when the oil starts to run hot. if you can get the engine environment temp down it may help.   Didn't 'Godzilla' have coolers on just about everything

aust spec 32 gtr has oil cooler for transfer case, that about the major difference to jdm 32 gtr. So engine/transmission/diff oil coolers are still needed (in order of preference).

I'm not sure how much the sump got heats up by the front diff and vice versa, as you can now get aftermarket front diff cover for extra oil capacity with more cooling fins.

Link to comment
https://www.sau.com.au/forums/topic/40243-overheating/#findComment-835910
Share on other sites

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

    • GTSBoy
      New kid on the block

      By GTSBoy · Posted

      The wiring diagram for the R33 RB25 is freely available, and is essentially the same same as most other RBs (just with differences as to which pin # does which job). To get the ECU to power up, you just need to provide power to the ECCS relay, and have the other power feeds that come in from the top left of the wiring diagram (wrt the ECU) that give perma power to the fuel pump relay, the ECU itself, etc etc, all connected. When you put power on all these it will just come to life. It's pretty clear from the diagram what needs to happen. Just follow the lines from the 12V + supply stuff in the top left over towards the ECU. I've even posted snips of such diagrams (not for vanilla 25, I think for Neo and 26) to various threads here in the last few months, talking about what it takes to get the fuel pump and FPCM up and going. Search these up and they will help get you started on doing the same with the vanilla 25 diagram. Hell, for all I know, I've done the same with that one in years past and have forgotten.
    • Duncan
      New kid on the block

      By Duncan · Posted

      Yep...so unless someone posts up the answer you will need to probe from the ECU connector to the dash plug with a multi meter in continuity mode to trace the wires.  Note the ECU has multiple - and + (and across different key settings - Battery, IGN and Start) and most likely the power is fed from the connector(s) that is normally near the left hand headlight.
    • Songo
      New kid on the block

      By Songo · Posted

      Thanks Duncan, I am actually just trying to get the Rb turning and running with the RB25DET S2 original loom itself  I am just trying to get it going outside the body and not thinking about the S15 or trying to match anything to the S15 loom at all I am only trying to see if anyone has done this and what pin they found to be the ignition trigger and ECU+/- on the dash connector, that's about it. Thanks  
    • iain_ST44GA
      M35 VQ25DET starter motor

      By iain_ST44GA · Posted

      Hi Guys, Does anyone know any aftermarket part numbers for a starter motor to suit the VQ25DET? I can find lots of alternative part number for the VQ35DE, which I assume would fit, but there is a lot of conflicting information out there. Thanks..
    • Murray_Calavera
      R33 GTR running -9 with no tune

      By Murray_Calavera · Posted

      I don't understand how this hasn't boiled down to - Upgrade the turbo when you have everything required. ECU, injectors, fuel pump, turbo, etc. Do it all at once.  If you don't have everything required, just enjoy the car as it is and keep saving up your pennies. 
×
×
  • Create New...