i got a new koyo radiator and now i need a fan for my 87t2

wut type of fan is good for my car.... i heard that it has to push/pull at least 2500cfm.... what fan can i pick up frum the junkyard that will do the job?

https://www.nopistons.com/forums/pub...1047683561.gif

i heard the stock clutch fan is really good (and thats not being sarcastic).

I think you heard wrong, parasitic drag is not something that you want.





You can modify a e-fan from a Pontianc Fierro, or a newer model Ford T-Bird to do the trick, but if you want to do it right order a NEW fan from a parts store. I saw a kit at the local store with fan thermo switch and e-z install kit for for 129.99.

stock fan is one of the best set ups you can get



keep in mind the draw of a electric fan can push 40 amps and spike at 80 amps, stock S4 alternator cannot properly push one of those fans to thier potential



plus you dont want to lose the shroud.

[quote name='piston_killer' date='Apr 13 2005, 06:08 PM']i got a new koyo radiator and now i need a fan for my 87t2

wut type of fan is good for my car.... i heard that it has to push/pull at least 2500cfm.... what fan can i pick up frum the junkyard that will do the job?

https://www.nopistons.com/forums/pub...1047683561.gif


[/quote]





Flex a Lite blackmagic fan, it has its own shroud, pushes (or pull) over 2300cfm, AND I have been using it for OVER 7 years without a major problem (except for the thermoswitch, so the fan was on at all times).

stock works the best

heres one made to fit an fc with a koyo rad. it also has a plug in play harness

http://www.sneedspeedshop.com/store/viewIt...sp?idProduct=15

thats sweet !

i'm playing with a haltech car, stock radiator, stock fan, shroud everything, temps vary between 190f and about 195f. stock setup works great

The Taurus fan works great and fits pretty damn well too. I picked one up for $10, but I also had to get a 3rd gen alt to run it, so it's not really cost effective. Blows a hell of a lot of air though.

[quote name='j9fd3s' date='Apr 18 2005, 12:19 AM']i'm playing with a haltech car, stock radiator, stock fan, shroud everything, temps vary between 190f and about 195f. stock setup works great


[/quote]



Is that under boost, or idle?

[quote name='j9fd3s' date='Apr 17 2005, 11:19 PM']i'm playing with a haltech car, stock radiator, stock fan, shroud everything, temps vary between 190f and about 195f. stock setup works great


[/quote]



I like seth's rad, shroud fan setup. I can't find the pic of his engine bay though.

im not rich like all the rest of you i should add

[quote name='j9fd3s' date='Apr 17 2005, 09:19 PM']i'm playing with a haltech car, stock radiator, stock fan, shroud everything, temps vary between 190f and about 195f. stock setup works great


[/quote]



Have you found a point where the temp is too low, making the ecu run the engine in a limp mode, or does it just richen the mixture up to a dangerous level?

I grabbed a set of Chrysler 3.3L fans C/W shroud from my local salvage yard (believe it was an 89 Dynasty).

This unit had a pair of 10" fans.

I ditched the stock shroud then had to move my battery box over as well as cut a section out of the side of it as the shroud is just a touch too wide.

I made custom mount brackets and used aluminum plate to fill in the "through air" sections of the Chrysler shroud.

This setup works at least twice as good as the factory fan/shroud setup.

This is all on the factory rad on my S5 and most of the time I don't even need to turn the fans on.

I'm sure there are a few good reasons to use an e-fan. Space would be one. But I think a lot of people are under the mistaken impression that an e-fan doesn't put any "parasitic drag" on an engine. That would be incorrect.



When that fan is running, it's pulling a significant number of amps, and that in turn is putting a load on your alternator. Guess what's spinning your alternator?



It takes the same amount of work to spin a given fan at a given RPM whether you are using a clutch drive off your water pump shaft or a separate electric motor. There is no free lunch.



And if you use a fan like the Taurus fan, you'd best make sure that your alternator and your wiring can handle the amp draw. To me, it's money and time spent for no gain. The stock setup works fine.

As I mentioned, I find cooling to be much quicker and rarely even turn the fans on above 45mph.

For me (an autocrosser) I can almost always do my run with the fans OFF (no drag OR draw); and when I am in a prosolo situation where the runs have little time in between them I can get the heat back out of the engine quicker. These 2 factors are HUGE in my decision to change, I used to boil the coolant frequently at events and since I have changed - not even close.

IMO you can't argue with the results in this application.

At idle with my Taurus fan on high, my temps drop dramatically. My S5 TII, which is completely stock will retain heat in the engine for hours after I shut it off, but my S4 with the fan set-up, after idling for the minute that the turbo timer counts down, it's halfway cooled down already.

my radiator doesnt have a spot for the fan switch, would the stock fan still work?

[quote name='DareBee' date='Apr 27 2005, 06:51 AM']As I mentioned, I find cooling to be much quicker and rarely even turn the fans on above 45mph.

For me (an autocrosser) I can almost always do my run with the fans OFF (no drag OR draw); and when I am in a prosolo situation where the runs have little time in between them I can get the heat back out of the engine quicker. These 2 factors are HUGE in my decision to change, I used to boil the coolant frequently at events and since I have changed - not even close.

IMO you can't argue with the results in this application.


[/quote]





ooooOOOOoooo venturing outside of racing.kos.net/solo aren't we?

Not exactly.

I did (however) get sick of some of the people on the other RX forum I was using, now I am back.

umm.... could i still use my stock fan setup even if i have no place for the fan switch?

The stock fan doesn't need a switch, it goes around with the engine.

so wut exactly does the fan switch do?

I MEAN THE FAN SWITCH THAT GOES AT THE BOTTOM OF THE STOCK RADIATOR.....

it's the sensor at the bottom of the radiator with the two wires connected to it . .... on the lower drivers side of the radiator

cold start.

So you are saying that little sensor on the bottom is the cold start sensor?? Maybe thats why my car is a bitch to start, It hasnt been connected in months. https://www.nopistons.com/forums/pub...1047683664.gif

i mean it has to do with the accelerated warm up thingy.

S5's don't have a cold start system, that was an S4 thing.

[quote name='ZenRXSeven' date='Apr 18 2005, 03:45 PM']The Taurus fan works great and fits pretty damn well too. I picked one up for $10, but I also had to get a 3rd gen alt to run it, so it's not really cost effective. Blows a hell of a lot of air though.


[/quote]





The Taurus fans are really good fans... There 2800 CFM's

[quote name='raising arizona' date='May 12 2005, 05:10 PM']The Taurus fans are really good fans... There 2800 CFM's


[/quote]



i hear they are great and all but , do i really have to get a 3rd gen alternator to run it in my fc?

https://www.nopistons.com/forums/pub...IR#>/blink.png

[quote name='fc3s4utnv' date='May 9 2005, 09:34 PM']So you are saying that little sensor on the bottom is the cold start sensor?? Maybe thats why my car is a bitch to start, It hasnt been connected in months. https://www.nopistons.com/forums/pub...1047683664.gif


[/quote]

hey ive got a stock radiator but im using the cooling fan out of a pt cruiser, it mounts great with slight mod(you'll see if you get one), and its wired straight in so when the car turns on it does too, but the car still worms up quickly and stays where it should, but make sure you get the shroud with the e-fan, i also just drilled small holes in the shroud and hooked it up to the radiator through the

radiator fins

You should always wire your fan through a relay. You could have "run-on" or other problems if you don't.

The fan is still spinning when you shut off the car and if it is wired direct it will act like a generater (while it is still turning) and will back feed the electrical system. Needles to say this can cause problems.

i believe i read somewhere the taurus fan draws 40 amps, and considering a s4 alt is only 70, and a s5 is 80, it's taking up atleast 50% of your total output, so if your in stop and go traffic witht eh lights on, and the heater going it ain't going to be pretty.

The twin 10s (Chrysler) I put in draw 12 amps.

well... the stock fan shroud doesnt fit and i cant run the car without it......believe me, i tryied. https://www.nopistons.com/forums/pub...IR#>/blink.png

what fan should i use cause the stock fan is out of the question?.!

to the top!

[quote name='piston_killer' date='May 23 2005, 06:08 PM']what fan should i use cause the stock fan is out of the question?.!


[/quote]





[quote name='piston_killer' date='May 30 2005, 01:53 PM']to the top!


[/quote]



I count at least 8 different fans people have suggested in this thread, the decision is up to you at this point.