Jump to content
SAU Community

Clutch Fan Upgrades

jdm32r

By jdm32r,
in Engines & Forced Induction

 Share

Recommended Posts

GTSBoy Grand Master

GTSBoy

Posted
Posted (edited)

A decent thermo setup is probably the best thing for a track car. For the following reasons;

  1. When you are right up the car, the car is generally moving quickly, thus getting decent natural air flow through the radiator. Thermo fans probably won't need to be running, and you would benefit from not having the load of a clutch fan on the engine.
  2. When you have been right up it but have had to slow down (yellow flag, going into the pits with a flat, broken suspension, whatever) then a clutch fan doesn't work it's best at lower revs and the thermos will work as well as they ever do - even if you've had to shut the engine down hot, the thermos will still allow a bit of heat to get dispersed. Not a bad thing.

For a road car I am strongly in favour of the original fan and the original clutch, preferably new ones. And when I say "original clutch", I mean the original type from Nissan. The Davies Craig etc aftermarket ones all seem to suck balls. I have been through several trying to get one that doesn't lock up at too low a temperature and make my car sound like a Patrol in traffic.

Edited by GTSBoy
  • Like 2
Run-It-Hard Veteran

Run-It-Hard

Posted
Posted

This is a neat replacement made by GKtech, I've got one in my R33 and it's definitely improved cooling efficiency.

http://www.gktech.com/index.php/s13-s14-s15-replacement-engine-fan-60-more-air-flow.html

You'll need to get the adapter too, as they were designed to bolt up to SRs.

http://www.gktech.com/index.php/sr-to-rb-clutch-fan-adapter.html

blind_elk Grand Master

blind_elk

Posted
Posted

I ran a thermo in my 32 for a short while, and had problems keeping the engine cool at any time, but particularly on the track. (Mild day (25ish) at Winton, 1 lap, engine boiling. same day, Highway cruise, slight uphill, thermo cuts in.)

I put the standard clutch fan back on, and haven't hade a problem since. (Mild day QR, 4 laps, engine slightly over thermostat temp.)

I would strongly recommend staying clutch, otherwise if you go thermo, spend a lot of effort in making sure air goes through the radiator.

Kinks Grand Master

Kinks

Posted
Posted

keep the standard clutch fan. upgrade the radiator. stock core is 16mm thick, put a 42mm core in and it will make a big difference to cooling ability.

make sure you retain the factory fan shroud. it's there for a reason.

Dale FZ1 Veteran

Dale FZ1

Posted
Posted

^^ +1 for fan shroud, regardless of whether you're using a mechanical or electric.

The aim is to achieve airflow through the whole core to promote heat transfer. You will find the OEM "splash tray": running back from the lower radiator support is an important cooling element so make sure it is retained.

Off topic, but is that black 32 the one you are putting on the track? Ride height looks like it might give some suspension travel and geometry issues unless you've done a LOT of work in that area.

GTSBoy Grand Master

GTSBoy

Posted
Posted

This is a neat replacement made by GKtech, I've got one in my R33 and it's definitely improved cooling efficiency.

http://www.gktech.com/index.php/s13-s14-s15-replacement-engine-fan-60-more-air-flow.html

You'll need to get the adapter too, as they were designed to bolt up to SRs.

http://www.gktech.com/index.php/sr-to-rb-clutch-fan-adapter.html

Interesting, because I've heard more negative reports on those things on RB than good.

  • Like 1
Jordy32 Experienced

Jordy32

Posted
Posted

Interesting, because I've heard more negative reports on those things on RB than good.

Is that so? I've been considering buying the adapter plate and putting it on my RB for a little while now as I've got the fan sitting on the side from when i had an S13. The fan went well on my SR and I've nothing but praise from people running clutch fans on their SR's at QLD Drift Matsuri, they swear by it, i'd assume an RB would have a similar result? all it does it pull air through a radiator better than the stock design, well at least they claim to.

The only people I've heard bash the fan are those who think it will lower the operating temperature, and are also using the stock temp gauge to "measure" their "results" - both of which render their "research" useless as they clearly have no idea what they're talking about.. lol

Has anyone here had a bad experience with it on the RB? :mellow:

GTSBoy Grand Master

GTSBoy

Posted
Posted

They're actually not an upgrade in terms of air flow or pulling power compared to an RB fan - especially the later RB fans. I think the GKTech fan is designed to pull less air and unload the engine as it is really aimed at the drift market.

Not bashing that fan, just pointing out that it might not be the best choice for an RB.

  • 5 years later...
thomathy Explorer

thomathy

Posted
Posted

Motor is is a rb25,My clutch fan is hitting the cooler pipe and cracked it! Dose anyone know if the rb26 clutch  fan will be a direct fit into the 25 shroud? as iv heard the blades are shorter so less chances it hitting. Cheers

D9A5906F-C98A-4191-B270-B28CC2075661.png

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

    • ARB26
      RB26DETT Sketchy boost mod?

      By ARB26 · Posted

      I might be way off the mark here.. there must be a T junction under the manifold. That takes manifold pressure through a check valve prior to the T, one side splits out to this bleed off orifice, the other straight to the wastegate actuators. 
    • ARB26
      RB26DETT Sketchy boost mod?

      By ARB26 · Posted

    • ARB26
      RB26DETT Sketchy boost mod?

      By ARB26 · Posted

      Carrying out some engine due diligence before my first drive in a 260RS that has been in storage for 10+ years, and found two lines that are susposed to be plumbed into the boost control solenoid. One of the lines (the wastegate boost supply line) to actuate the gates, had a bolt in one end blocking it. The other line (main boost signal line) from the very rear of the intake manifold (RB26DETT) and runs up to the boost controller had this pill in the end of it as seen in photos. Other than the obvious (T28 Ceramic turbos might well be cooked)  Can anyone shed any light on if there is any validity at all with this mod, bleeding a constant fixed rate of manifold boost pressure off through this 3mm hole?  Is it deliberate?  Was this a 90s Jap mod done to RB26's? Or has someone just fitted this without any idea of what happens to ceramic T28s if they are not gate controlled?    
    • PranK
      Chris' Toyota Mark ii JZX110

      By PranK · Posted

      This looks great! Awesome to have the 5 speed with an LSD in this. The Recaro's look like SR2's or SR3's. It's a shame they've been retrimmed as they would have looked sweet in their original colours. I think I'd want my agent to be a little more up front and informative too. I've never imported but I reckon it would make me a little nervous, so the more info the better.
    • soviet_merlin
      Duncan's V37.......race car?

      By soviet_merlin · Posted

      Thanks for doing that Duncan! Makes you a good person in my books. We don't get kangaroos or wombats here. But we have bats and it's similar. AFAIK it's often the mums with a baby attached that get hit because they drop lower when starting from a tree. If you hit an animal, check on it. https://www.ifaw.org/au/resources/wildlife-rescue-app An app to get the closest wildlife rescue contact.
×
×
  • Create New...