Electric Radiator Fan
 

Anyone running an electic radiator fan, what is your setup? Where did you buy it, did you wire it into something so it only comes on when a certain heat range is reached? How did you do that? What brand? I wanna know all the details. It'll really clean up the bay, and clear up the hp.

On my former 91NA:
Ford Tarus fan - shroud fits perfectly.
Wired using a fixed setting thermostat, relay, circuit breaker, and a diode in a wire from the AC clutch.

This setup would sometimes stay on up to 15 seconds after engine shutdown if the radiator was hot.
It was like the NA equivalent of a turbo timer.

No power difference on the S5.
The stock S5 fan clutch freewheels unless the radiator is hot.

I have my electric fan wired up through the sensor on the water pump neck as your gorund, and it will only ground your realy when the temperature is at a certain decree, and the rest of the relay is streight forward (if u need more help ask)
I used a mazda 323 fan with some custom brackets at the bottom and top

as for the power there is a little gain but not something that u will feel!

http://www.aaroncake.net/rx-7/efanmyth.htm
http://www.aaroncake.net/rx-7/efaninstall.htm

check out mine on my site...look at the bottom of my sig!

Re: Electric Radiator Fan
 

Perma Cool 16 inch finger chopper, wired to a temp sensor.

Hey Jarret how much was the finger chopper?

I really don't want to put my huge shroud back in.

I've got a temp sensor but it's the crappy one which fits between the fins. Know of any which will go into the coolant?

I'm probably going to fab a shroud with Rivets and sheet metal/aluminum. That way I can maximize the new Koyo for the summer.

BTW I think I found a ported S4 hotside I'm negotiating on. I'll need a S4 exhaust mani though, right?

88.95 at Summit racing:

Vendor: Perma-Cool Industries, Inc.
Product Line: Perma-Cool High Performance Electric Fans
Material: Aluminum
Finish: Anodized Silver
Diameter: 16 in.

Cool your radiator

16 in., 2,950 cfm electric fan

And I have S4 manifolds if you need one.

Jarrett

16" Permacool, with the Permacool install kit. That has a nice little thermo-switch in it.

I've recently discovered that you have to be careful on the dyno with that thing. Shops that use fans that blow through the radiator are peachy, but if you go to one that uses a fan that blows on the engine, it may fool the temp sensor. My car had a nice 225 degree spike because of that. I'll have to make that shop use a radiator fan next time.

FWIW, the car dyno'ed around 6hp lower through the entire curve at 225* then at 180*.

what do you guys use for a shroud with the permacool fans?

No shroud here... yet. I'll probably fabricate one before summer hits.

I got this idea from soemone I know...

..used the fan off of a Pontiac Fiera, fits in front of radiator perfectly, except you'd have to use zipties, but hey, for $10 at the junkyard, it works!!!...and I ghetto fabbed mine to a switch inside the car...


...ooooh no shroud = better view of engine...me like...

Anyone ever tried the dual integra fal fans? I was looking at them tonight but i didn't have my rad. handy to compare, it looks like it would be a good fit and they move alot of air? Any thoughts?

Any twin-fan set-up that actually fits on the core will not move as much air as one big fan. Two 10" fans are about the best you'll do, and fan 16" fan will far outperform them.

using fiero fan myself,

yeah, you'd think you'll gain power by removing the fan from the front of the motor, but alass, you must drive the electric fan with the alternator which is, well, mounted to the motor.
the question is, which takes less power, a clutch fan off the water pump or an electric fan off the alternator.

Different fans will give very varying results, but the difference isn't worth worrying about. Thermoclutch fans and electric fans with thermoswitches are only drawing power at low speed anyway, so it's no big deal.