black magic e fan 2800 cfm
 

i installed my black magic e fan with shroud today and this sucker realy moves some air if you want to go e fan i would realy reccomend this fan
i have never seen my cooling system behave so well. it has a built in thurmostat and temp sensor and is adjustable from 180 to 240 deg
i payed 280 after tax so its a little spendy but i think it will be worth every penny
model 150
flex a light black magic

fits the koyo rad pretty well although it doesnt cover the whole rad surface

nice fan, also sucks electricity like no other.

better hope your alternator can handle it. :)

yea i put my stock main pully back on to help with the extra juce i will need
and for my alt its got a life time warranty, yea baby and im already on my second one.
if only napa new

not meaning that it can't handle the draw but the output on our alternators is fairly weak. sitting at stoplights on a hot night is gonna really draw some juice, a bit more than the alternator can put out which can eventually run the battery down and kill the battery.

use capacitors. a bunch of them.

I used to use this fan. It acually worked. When you where stopped, car heats up fan clicks on cools it down soo nice that the fan can kick off again at a dead stop. *with thermoswitch*

I've been using this fan for a few months, including a cross country trip.
I picked mine up from SpeedUnlimited in MD for about $215.

In my experience, with my 1990 S5 GTU, the fan has worked great.

It keeps the temp. needle below 50%, even when idling in hot weather. I haven't noticed any significant draw from the electrical system. I have a stock S5 alternator and an Optima red top battery.

I also have the fan wired up to blow when the ignition is off, thermostat controlled. It'll usually kick on and off a few times after the car is parked as the engine cools.

I have been using the model 150 for a little while as well. GREAT fan!!!!!!! I have the thermostat set to the lowest level as well as a manual switch on the center console of my TII. It has worked better than any other e-fan I've ever seen used on a second gen. I paid $180 out the door at Kragen Auto parts. :) Got to love that military discount. It does draw some serious current though. An FD alt. upgrade for the FC is the way to go!!

Zach

That's ridiculous. You would need thousands of kiloFarads worth of capacitors to power an electric fan for several minutes stopped at a light, and the alternator would still have to charge them all up again.

I hope you were joking, and that the original poster knows enough to realize that this is a very poor suggestion.

If the e-fan is drawing too much, upgrade the alternator or switch to a more efficient fan.

On a S5, 50% is operating temp, the gauge isn't linear, it has pretty much 3 positions, cold, somewhere in between, and hot. 50% pretty much is anything from around 150-220, so if you were less than that, it's not a good thing. This is also why the s5 gauge sucks ass, because by the time it actually moves up to show the cars overheating, it's been hot for quite a while.

I have been on that fan for years.. But I did upgrade to an FD alternator to handle the 13 Amp draw.

One thing I don't like about that fan - that thermostat circuit SUX!
The solder joints and connections tend to pull out inside the box.

I prefer to run the fan as a stand-alone fan and run an external thermostat system - i.e. Spal FAN-PWM is fast becoming my favorite.


-Ted

and the best is.... http://www.jegs.com/webapp/wcs/store...0117&langId=-1

It did on my S5, and on top of the sound system :)

Yup, the thermo died shortly after, so I eliminated it and ran the fan at all times; the car did took longer to warm up though :(

I saw that one, pros:

-More CFM
-Shroud covers more surface area, so it should cover the FC radiator much better than the 150 black magic.

Cons:
-WHOLE lot more amp draw!

actually, i was referring to actually kickstart the fan into runing. like on most household airconditioning units ther are capacitors so it doesnt blow a breaker. my dad ( who is a master electricien) told me that it should work really well.

im not talking about to fully power it. just for times when the fan kicks on and needs the extra juice.

http://www.vintageair.com/download/pdf_singles/70.pdf
3700+cfm Yummy!

I hate to say it, but your dad is wrong. In a capacitor start motor, a starting capacitor is inserted in series with the startup winding, creating an LC circuit which is capable of a much greater phase shift (and so, a much greater starting torque). The capacitor naturally adds expense to such motors.

Thus, the capacitor is not used as a "starting battery", but to actually shift the phase of the AC waveform for more starting torque.

Nothing against your dad, but there's a huge difference between electricians and those who know electronics.

It of course is valid to put a large value capacitor in parallel with the e-fan's motor to aid in startup torque, but the real problem is not the fan starting (that current is supplied by the battery), but the continuous draw on the already weak alternator.

I will agree with the BM thermoswitch failing.

My buddies Camaro had the BM Extreme fan and the circuit board connectors melted off and failed.

I was planning on running a Permacool finger chopper(2950cfm/no shroud) with the BM thermoswitch.

SO what switch woudl you guys recommend? Any mods which might increase their stability?

If/when my stock fan dies and is replaced with a e-fan, I'm going to use this adjustable voltage switch kit to trigger the fan based on the ECU's coolant thermosensor voltage.

Damn looks like I found my dream controller.
http://www.jegs.com/webapp/wcs/store...1471&langId=-1

It would replace my autometer gauge and control the efan.
This placed with the permacool ($100range)fan would be a pretty economical choice for temp reading and stock fan replacement.

I just got mine, I hope it goes good.