Thermo fans

[Dahtone Racing]

ok guys im trying to finalise my engine setup

i wanna piss of the engine fan and get thermo fan setup going

like on S2000s and WRXs

has anyone used a setup like this?

how do you reckon it would go on an RB30?

wat esle would you guys recommend?

[ylwgtr2]

electric fans are great

[Dahtone Racing]

yea i know lol i wanna clean up the engine bay and get rid of as much crap as i can

the engine fan looks shit house

ive heard of people using thermos instead of the engine fan having over heating issues

[DOUGMO]

something like a davies craig 16"

fan should flow near enough,

one of these flow more than

2 x 12" fans, might be worth a look

[elbee111]

something like a davies craig 16"

fan should flow near enough,

one of these flow more than  

2 x 12" fans, might be worth a look

This is what I had done recently. Hooked to a thermostat in the cooling system.

Definately no overheating issues. Hardly ever needs to come on in this weather.

Will have to see how it goes in Summer in traffic.

El Bee

[DOUGMO]

you can get adjustable thermostats

(which i have on my rx7) have them set

at a higher temp to come on later

then in summer have them come on

a bit earlier for the traffic

[Guest DIRTgarage]

yea i know lol i wanna clean up the engine bay and get rid of as much crap as i can

the engine fan looks shit house

ive heard of people using thermos instead of the engine fan having over heating issues

Anthony, we use a 16inch davies craig fan on TWO.06L. works a treat and rids us of that ugly engine fan. As an added bonus makes working on the front of the car and radiator removal much easier.

[BU5TER]

I'm using twin 12" davies craig they fit nicely

[GTRgeoff]

I've seen a twin fan setup on ylw3tr2's R34 that is schmick. It's off a falcon and seems to work well. He uses his own homemade controller (of course)

[Dahtone Racing]

thanks for the info guys

im gonna try and fit a set of WRX ones cause they are very neat and compact

they can cool a 500hp WRX with no issues so i guess they should be ok for my car

do i have to run it off a thermo switch or can i just have them running all the time?

[blind_elk]

If you run them all the time, you are basically defeating the purpose of fitting them (other than they look prettier than the factory one). The alternator, and hence the engine, has to work harder to keep power available.

If you aren't going to run them off a thermo switch, then at least run them off a manual override switch - you turn them on when you think they need to be on.

Personally, haven't had much success with the thermo setup. You need to ensure that the air is going to go through the radiator (the factory fan ensures this will happen), otherwise your engine will be continually overheating. Mine even turned the fan on on a slight incline @110kph on a mild (say 23C) day!

[Dahtone Racing]

well the way i was looking at it was that the engine fan is on constanatly

its always pulling air though the radiator while the engine is on.

so im just gonna replace it with a pair of electric ones

[someonestolecc]

well the way i was looking at it was that the engine fan is on constanatly

its always pulling air though the radiator while the engine is on.

so im just gonna replace it with a pair of electric ones

I think the clutch fan uses the clutch to vary it's speed so that's not quite true.

I use twin fans with an unknown shroud. One of the fans is busted and doesn't work and it still cools my water temp to about 80 degrees (sr20) so the twins are good even one... it even spins my air condensor fan on the other side of the radiator!

I have a manual switch that turns it on and off however jaycar have a temp sensor kit thing that lets you turn it on at say 85 degrees and turn it off at 80 degrees (I forgot what that particular ranging is called).

I'm currently looking for a replacement fan though but I think the jaycar kit is the cheap and safe way to go.

[TokyoTaxi]

The ones pictured below ( FLX220 ) were the ones I had on my HR31 and they fit perfectly and worked very well ( suffered a little on really hot days ).

- FLX220 Specs: H: 15.5" x W: 26.25" x D: 2.625" 2,500 CFM and 19.5amp draw.

If they fit, the FLX295W ( also pictured below ) would be a much better option.

- FLX295W Specs: H17.5" x W: 27.5" x D: 4" 4,000 CFM and 28amp draw.

BTW these are from Summit Racing Products in the USA.

( I don't know if there's anything like these in Aus but if so, they might be cheaper ).

[Dahtone Racing]

are there any disadvantages of running the fans all the time???

[Dahtone Racing]

anyone???

[elbee111]

Just as blind_elk said, that it really defeats the purpose and puts drag on the enging when it is unnecessary.

As per someonestolecc, my mechanic set it I think at that 80-85 range and used the consult port to check everything.

The fan(s) will switch on when it needs to. The mechanic did add another overide switch for me to have it run constantly when, and if, I want it to.

El Bee

[Dahtone Racing]

im not fitting em to reduce drag

im fitting em to clean up my engine bay because im going all out on it

hiding all the wiring and chroming everything and the fan ruins it

so rephrasing my question will having the fans on constantly have any negative effects on the running of the engine apart from this altenator issue?

[elbee111]

OK. Whatever.

They won't kill the engine, just make the alternator (and therefore the engine) work a fraction harder.

May also lower the temperature more than optimum and not allow it to warm up as quickly.

El Bee

[Dahtone Racing]

thank you