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Thermo Fans

BNR32t

By BNR32t,
in Australian Capital Territory

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BNR32t Proficient

BNR32t

Posted
Posted

Hey guy,

I have just put my thermo fan in the car but i haven’t yet hooked it up to the power. Has anyone else put one in a r32?

My poor little bnr32 seized up the clutch fan. :D

I want to know if i should just hook it up to a switch in the cabin or not?(manual turn on and off)

Regards Keith

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StinkyPoo Mentor

StinkyPoo

Posted
Posted

I've got two switches hooked up on mine. One to the ignition, the other is a thermo switch (turns on when it reaches a certain temp). Each fan runs one relay.

I've got two thermo fans, 1x shrouded 14inch fan, and 1x 12inch fan unshrouded (no space due to aircon).

Wiring would be the same between any car.

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Bullet32 Veteran

Bullet32

Posted
Posted

I use a 14" thermo with the standard shroud, its controlled by an electronic thermo switch that reads from the standard sensor in the thermostat housing...

Ive never had over heating issues since I started using this set up, I have the switch set to 84 degrees and even on a hot day it doesnt go over 91 maximum.

The best thing about removing the engine fan is the increase in engine response, by taking off the standard fan you reduce parasitic drag on the engine by quite a lot which makes it much easier to rev.

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  • 1 month later...
widebody32 Community Regular

widebody32

Posted
Posted

Have fitted plenty of these to GTRs and GTSTs. The main thing is to make sure that the radiator is a twin core one as the late version gtst had single core and don't seem to work efficiently with thermo's.

As for wiring, the best way is to use a thermo switch to control them. These can be as simple as a probe that sits underneath your radiator hose or a fan switch that is tapped into your manifold or a adaptor in your hose.

I usually go for the first as it is easiest, but have used both with good results.

Do not rely on manual switches as there will come a day when you will forget.

As for wiring it you will need either two relays or the one i use is a 70amp one that you can run both thermos from(much easier and less wiring)

Here is a brief description of how it wires in.

The thermo switch turns the relay on by giving it a earth when it reaches it preset temp and the relay then turns on both thermo fans.

Put the thermos behind the radiator in between the radiator and engine as they cause an airflow restriction when they are in front. You can use two 12" which are actually 13" in total diameter and these will fit perfectly or you can run 2 13" by overhanging them and blocking the sides in so they can only suck through the core.

Make sure you stagger them so that one thermo sits to the top and one sits to the bottom of the radiator, and also make sure they are wired and fans are spinning the right way to pull air instead of pushing air.

If you need a diagram drawn i would be happy to or i can show you how i do it as i am doing one for a customer at the moment.

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CeJay Grand Master

CeJay

Posted
Posted

Ok this might sound a bit dodge, but talked with my local auto electrician, and he's a bit of a lateral thinker (does good work) He said I should be able to use EA to BF at least thermo fans? As they all had them from then on? Or commodore ones, just need to measure up the radiator and compare the sizes. He did say commodores had larger thermo fans. Anyone know anything about using falcon or commodore ones? Or should I steer clear of them?

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infamous_t Veteran

infamous_t

Posted
Posted
Ok this might sound a bit dodge, but talked with my local auto electrician, and he's a bit of a lateral thinker (does good work) He said I should be able to use EA to BF at least thermo fans? As they all had them from then on? Or commodore ones, just need to measure up the radiator and compare the sizes. He did say commodores had larger thermo fans. Anyone know anything about using falcon or commodore ones? Or should I steer clear of them?

Member on here with Candy red 32 with 26/30 swears by the EA thermo fans, personally im looking at the flex-a-lite thermos which are a twin thermo in a single casing.

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