Jump to content
SAU Community

Recommended Posts

hey guys.....was a pretty hot day today in Melbourne and unfortunately had to run some errands in this heat.

after returning i noticed the extreme amount of heat the engine was emitting...to the point i started getting worried. water temps were as high as 95 degrees and oil almost hitting 90.

i have a Koyo radiator that i recently just put on and had no dramas until today. most of the heat is comming from the exhaust housing (top mount gt35r) and there is no heatsheild.

can anyone give me some tips as to how i might overcome these problems? some people have mentioned ceramic coating the front/dump pipes and the exhaust housing. atm ive only got some shonky heat wrap.

any help much appreciated guys.

My oil is usually at 90, today went a tiny bit over due to Aircon on but hardly ever seen it over 90. Last year on those 46-47 degree days it got to a bit over 120 but 90 is fine dude. The water temp is a little high though.

I think properly made heat shields are the way to go , the heat insulation bags around the turbine housing are supposed to be good things too .

Ideally you want to keep the heat in the exhaust gas so it can do positive things for you , heat radiated into an engine bay does nothing for you .

A .

Driving around today, i didn't go past 75 degree's water temp. Every setup i've had has never gone above that either.

No heat shield is your issue, you are crazy to run around without one IMO.

No heat shield is your issue, you are crazy to run around without one IMO.

Hmm, what exactly is a heat shield? Are we talking about something custom designed for the car?

I just have a Race Radiators item, it was made for a R33, but we modded the mounts, fits perfectly into a HR31.

That is basically it.

I also use the factory RB26 heat shields, RB26 clutch fan with shroud etc etc.

None of this wanky thermo business, just how Nissan intended it with a good quality radiator.

I have 1x A/C condenser and a radiator sized intercooler directly infront of the radiator as well, so its not exactly getting fresh air either :P

And i wouldn't say i have a massive 'mouth' on my front bar either.

The RB26 does sit lower in a HR31 than a GTR though (ie top of the cam gears is level with my radiator top), but i doubt that is anything major in terms of reasons.

Hmm, what exactly is a heat shield? Are we talking about something custom designed for the car?

Being he has a high mount, yes it will be custom made for the exhaust housing.

Usually just a 180degree bend of stainless that bolts on. Not hard for a fabricator with half a brain.

Cheers,

I was having trouble with mine last summer but i never knew because the factory temp gauge didnt move much. It wasn't until the tuner plugged it into his pc and took it for a drive (diagnosing another problem) we noticeed it around 90 degrees). Since then i have played with the clutch fan and have noticed a lot more air being pulled through.....i just have to wait until its back on the road!!!!

James

PS: I also have a 4.2EFI patrol that is nearly identical in the engine bay minus the turbo. I plugged my consult thingy in and noticed when the factory gauge is on 1/4 its 84 degree (sits there on normal driving) and 1/2 is 89 degrees!!!

Nismo thermostat worthwhile or not whats the general consensus

rebuilding my rb26 at the moment an wondering if its worth the extra dollars

2530's poncams etc etc was making 429 hp before it spun a bearing so big baffelled sump etc going in now

found with stock rad an nissan clutchfan etc it kept temps under control well before even on trackdays etc in Darwin heat!

Edited by noone
Nismo thermostat worthwhile or not whats the general consensus

rebuilding my rb26 at the moment an wondering if its worth the extra dollars

2530's poncams etc etc was making 429 hp before it spun a bearing so big baffelled sump etc going in now

found with stock rad an nissan clutchfan etc it kept temps under control well before even on trackdays etc in Darwin heat!

I hated mine... made it almost impossible to get the car up to temp on cold Melbourne nights but you might not have that problem in Darwin!

90º water and oil is fine... no reason to stress out

while were having this talk .i thought id ask.can u run an aftermarket 50m radiator and still keep the clutch fan in place? and dose the 26 clutch fan make much of a diffrence?????

Cant answer your query regarding the 50mm rad though I am pretty sure they will fit okay

Nissan clutch fan and correct shroud was so so much better than thermofan on my 32

that plus an oil cooler and I really didnt have to worry bout temps on track even in Darwin temps

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

    • Well, apparently they do fit, however this wont be a problem if not because the car will be stationary while i do the suspension work. I was just going to use the 16's to roll the old girl around if I needed to. I just need to get the E90 back on the road first. Yes! I'm a believer! 🙌 So, I contacted them because the site kinda sucks and I was really confused about what I'd need. They put together a package for me and because I was spraying all the seat surfaces and not doing spot fixes I decided not to send them a headrest to colour match, I just used their colour on file (and it was spot on).  I got some heavy duty cleaner, 1L of colour, a small bottle of dye hardener and a small bottle of the dye top coat. I also got a spray gun as I needed a larger nozzle than the gun I had and it was only $40 extra. From memory the total was ~$450 ish. Its not cheap but the result is awesome. They did add repair bits and pieces to the quote originally and the cost came down significantly when I said I didn't need any repair products. I did it over a weekend. The only issues I had were my own; I forgot to mix the hardener into the dye two coats but I had enough dye for 2 more coats with the hardener. I also just used up all the dye because why not and i rushed the last coat which gave me some runs. Thankfully the runs are under the headrests. The gun pattern wasn't great, very round and would have been better if it was a line. It made it a little tricky to get consistent coverage and I think having done the extra coats probably helped conceal any coverage issues. I contacted them again a few months later so I could get our X5 done (who the f**k thought white leather was a good idea for a family car?!) and they said they had some training to do in Sydney and I could get a reduced rate on the leather fix in the X5 if I let them demo their product on our car. So I agreed. When I took Bec in the E39 to pick it up, I showed them the job I'd done in my car and they were all (students included) really impressed. Note that they said the runs I created could be fixed easily at the time with a brush or an air compressor gun. So, now with the two cars done I can absolutely recommend Colourlock.  I'll take pics of both interiors and create a new thread.
    • Power is fed to the ECU when the ignition switch is switched to IGN, at terminal 58. That same wire also connects to the ECCS relay to provide both the coil power and the contact side. When the ECU sees power at 58 it switches 16 to earth, which pulls the ECCS relay on, which feeds main power into the ECU and also to a bunch of other things. None of this is directly involved in the fuel pump - it just has to happen first. The ECU will pull terminal 18 to earth when it wants the fuel pump to run. This allows the fuel pump relay to pull in, which switches power on into the rest of the fuel pump control equipment. The fuel pump control regulator is controlled from terminal 104 on the ECU and is switched high or low depending on whether the ECU thinks the pump needs to run high or low. (I don't know which way around that is, and it really doesn't matter right now). The fuel pump control reg is really just a resistor that controls how the power through the pump goes to earth. Either straight to earth, or via the resistor. This part doesn't matter much to us today. The power to the fuel pump relay comes from one of the switched wires from the IGN switch and fusebox that is not shown off to the left of this page. That power runs the fuel pump relay coil and a number of other engine peripherals. Those peripherals don't really matter. All that matters is that there should be power available at the relay when the key is in the right position. At least - I think it's switched. If it's not switched, then power will be there all the time. Either way, if you don't have power there when you need it (ie, key on) then it won't work. The input-output switching side of the relay gains its power from a line similar (but not the same as) the one that feeds the ECU. SO I presume that is switched. Again, if there is not power there when you need it, then you have to look upstream. And... the upshot of all that? There is no "ground" at the fuel pump relay. Where you say: and say that pin 1 Black/Pink is ground, that is not true. The ECU trigger is AF73, is black/pink, and is the "ground". When the ECU says it is. The Blue/White wire is the "constant" 12V to power the relay's coil. And when I say "constant", I mean it may well only be on when the key is on. As I said above. So, when the ECU says not to be running the pump (which is any time after about 3s of switching on, with no crank signal or engine speed yet), then you should see 12V at both 1 and 2. Because the 12V will be all the way up to the ECU terminal 18, waiting to be switched to ground. When the ECU switches the fuel pump on, then AF73 should go to ~0V, having been switched to ground and the voltage drop now occurring over the relay coil. 3 & 5 are easy. 5 is the other "constant" 12V, that may or may not be constant but will very much want to be there when the key is on. Same as above. 3 goes to the pump. There should never be 12V visible at 3 unless the relay is pulled in. As to where the immobiliser might have been spliced into all this.... It will either have to be on wire AF70 or AF71, whichever is most accessible near the alarm. Given that all those wires run from the engine bay fusebox or the ECU, via the driver's area to the rear of the car, it could really be either. AF70 will be the same colour from the appropriate fuse all the way to the pump. If it has been cut and is dangling, you should be able to see that  in that area somewhere. Same with AF71.   You really should be able to force the pump to run. Just jump 12V onto AF72 and it should go. That will prove that the pump itself is willing to go along with you when you sort out the upstream. You really should be able to force the fuel pump relay on. Just short AF73 to earth when the key is on. If the pump runs, then the relay is fine, and all the power up to both inputs on the relay is fine. If it doesn't run (and given that you checked the relay itself actually works) then one or both of AF70 and AF71 are not bringing power to the game.
    • @PranK can you elaborate further on the Colorlock Dye? The website has a lot of options. I'm sure you've done all the research. I have old genuine leather seats that I have bought various refurbing creams and such, but never a dye. Any info on how long it lasts? Does it wash out? Is it a hassle? What product do I actually need? Am I just buying this kit and following the steps the page advises or something else? https://www.colourlockaustralia.com.au/colourlock-leather-repair-kit-dye.html
    • These going to fit over the big brakes? I'd be reeeeeeeeaaaall hesitant to believe so.
    • The leather work properly stunned me. Again, I am thankful that the leather was in such good condition. I'm not sure what the indent is at the top of the passenger seat. Like somebody was sitting in it with a golf ball between their shoulders. The wheels are more grey than silver now and missing a lot of gloss.  Here's one with nice silver wheels.
×
×
  • Create New...