[Rotary_Rocket_87]

Why is a clutch fan better? If you look at new cars more have electric fans.

Let's weigh the pro's and con's

Electric:
Pro's
- they take up less room
- they flow alot of air
- even at higher speeds they pull air
- you can wire them in multiple ways ( toggle switch, thermoswitch, or an adjustable thermostatic relay
- they remove the load on the water pump, less work for the motor
- you can leave them on to cool the motor after a hard run

Con's
- if not shrouded they COULD be inefficient
- they draw between 20 and 30 amps, putting more load on the alternator
- they are slightly more complex to install

Clutch:
Pro's
- easy to replace/install
- flow very well at idle and slow speeds

Con's
- put drag on the motor
- when they fail they can create more problems than just overheating
- don't pull SH*T for air after a certain rpm
- motor has to be running for it to work

That is all I could think of, if anyone can add to this please do so. That being said I am currently running 2 12" aftermarket e-fans, unshrouded, on a key-on powered toggle switch. I haven't had any overheating issues. I also have had them controlled by an adjustable thermostatic relay that would keep the fans on till the motor dropped to a cretain temp, but it ended up getting fried by a short (and I haven't replaced it). They have been on my car for 2 years and I have only overheated twice (cause I was low on coolant from leaks). O don't have a bigger alternator (stock s4) and I am using a optima yellow top battery. Not once have I been able to notice a difference in the load on the alternator. Thanks for letting me rant.