opinions? slim fans for n/a

[evan938]

just been considering the idea...i can get some slim fans, same as stock size (14") for cheap on ebay... im sure these will flow a lot more air than the stock fans. on the same note, if they flow so much more air, they should cool the radiator and condenser a lot faster than the stock fans, plus add a little extra room in the engine bay

discuss.

[clarion]

i dont see any thing negative about putting them in....go for it

[yamaha]

Slim fans can flow up to 2500 cfm per fan. Both stockers flow 1,200cfm, so, you will be getting more ait through the radiator and condensor, but I don't see why you need them. Your not putting strain and heat on the engine, and the stock fans you have now do the job. But on the bright side, your A/C will bo colder.

[2004ElantraGLS]

Yeah, it definately won't hurt anything, but I doubt you'll see any real gains from this. Might add some longevity to your A/C system...and if you have a Header installed, it'll help disperse some of that added heat.

[evan938]

that was my thinking. a little cooler engine bay (although my filter is in the fender) should keep the a/c a bit colder, keep the engine bay a little cooler, and will/should decrease the intake pipe temps a few degrees. not something im expecting a lot out of...compare it to the TB bypass mod

[BColeman]

evan, what's the going price on eBay for fans to fit our cars?

It's actually a great mod to do to your car, regardless of your current performance status. The benefit of colder A/C and a cooler engine bay are good enough reasons to install a pair.

Another question I have is how hard is it to install them? You don't have to remove the radiator or anything like that do you?

[BlackElantraGT]

Is it just me or does our car seem to heat up in the engine bay more so than other cars? When I'm at a stop and I have my left arm out the window, I can feel all the heat coming from the car.

[evan938]

you can get universal fans that attach onto the radiator sort of like a zip tie, but not. theyre made for this and come w/ the fans. theyre like a long plastic strip you put thru the radiator and then a circular plastic piece you put on the long one and it doesnt reverse. im seeing 14"ers on ebay for about 45$ shipped a piece...so 90$ for the set and 4 wires to solder

[yamaha]

Have a ebay link?

[evan938]

http://cgi.ebay.com/ebaymotors/14-High-Speed-Fan-Turbo-Supra-4G63-FLEX-A-LITE_W0QQcmdZViewItemQQcategoryZ34201QQitemZ463015 0209QQrdZ1QQsspagenameZWDVW

[tharptroy]

http://cgi.ebay.com/ebaymotors/14-High-Speed-Fan-Turbo-Supra-4G63-FLEX-A-LITE_W0QQcmdZViewItemQQcategoryZ34201QQitemZ463015 0209QQrdZ1QQsspagenameZWDVW

i thought I pisted this earlier, but obvously I was mistalken. I think that with the fans cooling the piss out of your engine, you're going to have the thermostat cycling opening and closing more often, and my guess is that when the thermostat is closed, the pumping losses in the water pump increase (reducing hp).

[ricerrx7]

^If anything, when the thermostat is closed there is less coolant to push, so it would give a little bit of power (nut much though).

[FordFasteRR]

The CFM ratings on aftermarket fans are made using no resistance ... once they are placed against the radiator fins, the cfm drops to less than half or worse.

I also think that a fan rated for higher CFM will also draw more power than the oem fans, which result in higher parasitic power loss due to the extra strain on the alternator... as you may or may-not know, the more power you draw from the electrical system, the more load the alternator places on the engine... this in turn requires more power to spin it which == less power to the wheels.

I would say that unless you have a damn good reason to do so, it would be pointless to change out the stock fans... and lastly ...

the stock fans have a very efficient shoud system, even with their lower flowing CFM rating, they can be (and most likely are) more efficient than any aftermarket slimfans that you can find...

So... don't waste your money. lol

[tharptroy]

^If anything, when the thermostat is closed there is less coolant to push, so it would give a little bit of power (nut much though).

my thought is that since the thermostat is closed that the pump will be pushing against a wall of unmoving coolant. perhaps im wrong (wouldnt be the first time). I'll go ask someone that I know is knowlegable on pumping systems.

[CTele02]

I dont think this would be a "useful" mod... becuz even when people take of the whole A/C system how much parasitic hp is gained? like 2-4hp? So imagine how little you would see from this...

[Bnystrom]

The fans only operate when it's hot out and the car isn't moving. What benefit do you expect to get in normal driving?

[evan938]

The fans only operate when it's hot out and the car isn't moving. What benefit do you expect to get in normal driving?

you sure? caus i was under the impression they also turned on when the a/c is on

[Keyan]

you sure? caus i was under the impression they also turned on when the a/c is on


They do. The 2 fans operate independantly.

[evan938]

so if the a/c is on while the car is moving, more flow over condenser should = colder a/c right?

[Leviathant]

The only time I noticed my fans were running was when my thermostat was dying off. They sucked a lot of juice (according to the voltmeter on my multigauge) and made a lot of noise. This was in the winter, so I'd be driving with headlights, fan, and my defogger on, and when I sat at a red light, applying the breaks would see my voltage drain steadily down to 12v, where it would kind of waver for a little bit until I drove again, letting the alternator charge up the system.

Since getting a working thermostat, I don't know that my fans have ever come back on.

[XDGT03]

I also think that a fan rated for higher CFM will also draw more power than the oem fans

2 high flow (cfm) 10" fans are going to draw around 8-10 amps each. I don't know what the oe ones draw. You may need a battery with more amp hours.

[tharptroy]

just an update, centrifugal pumps consume the most power when they're either running with a very low flow and high pressure or a very low pressure and high flow.

the cooling system is fairly restrictive, so I dont think the latter will ever be the case.

so in actuality, it depends on the pump's specifications to know whether or not the system consumes less power when fully open or partially closed....just something I found interesing, though it doesnt really give a definitive answer.