I feel I wired mine safely for this summer. Its direct relayed off the ignition. In any case, my clutch fan actually siezed up about 4 months ago. You could bearly even move it with your hand. Not sure what went wrong with it, but it was much cheaper to just install an efan.

 

its clear now mine wasnt working properly, and wasn't cooling as it should. the electric fan has made a big difference..

again, i refer you to as i said earlier "but thats just my situation".

i would have imagined an electric fan would make a difference on any rx7.. but i dont have much experience on how my clutch fan should have been working (as i was at the time the only person i knew still with a clutch fan), and it clearly wasn't.

if what you're saying is true, then there was no way my clutch fan was working properly.. becuase in all honesty the electric fan has made a noticeable difference.

 

The Stock Viscus fan just plain sucks.. really, i mean sure you can use it, but it can fail, and lead to cooling problems down the road.. I wired up a small LED with a wire going just under the bonnet (hood), this let's me know when my E-fan is coming on, in relation to my new temp guage, it comes on at about 182 degree's.

you CAN use junkyard fan's, Fiero, taurus ect..ect.., but i opted to use an 18 inch black magic 2800 CFM's baby YEAH!

Some say it's over kill, but hey, my car is my baby, and it'll sure keep her cool...

-Markus

P.S, the little 12v LED under the hood was an idea from my friend. just like a viscus fan the E-fan electronic's can fail over time, the light let's me know if it's working, and it's barly noticeable ...unless you know it's there.

 

Think about this: If electric fans are so much better, why does just about every car with a longitudinal engine still use a thermoclutch fan? "

beacuse it's easy, it's cheap and they rarely wear out before the warrenty is up. Take a look under a few hoods from the 90's dude, guarentee that you'll find almost 95% of cars, at least here in north america, use electric fans, my permacool 16" moves a solid 2950 CFM, those 10 stubby blades of the OEM are not going to move that much air, given that they both have 100% coverage shrouds, and since those OEM blades don't seem to be high speed blades the faster they turn the larger the tip stall area becomes reducing the effectiveness of those stubby blades even more..

"Not many people here seem to have a grasp on how and when fans as supposed to work."

Including yourself it seems, but it sounds like a predujice towards a product more then anything..

"Worse is that many converting to electric fans don't know how to wire them up safely."

That's thier problem, if they are going to try and install a product of thier choosing without the knowledge required to do it right then sit back and laugh as they overheat and blow.. not your car. However giving advice on how to wire it would make you last point moot.

 

This is flat-out and blatently wrong. Please don't spread misinformation. There is already enough in this forum as it is.

 

Technically, all puller fans suck. Pusher fans blow.

 

i think you all should schedule a meet somewheres and see who has the biggest johnson in person. You should all beat the **** out of each other and then maybe we'll finally get somewhere!!!

 

I'm down for that, but all the less endowed people are going to be slaughtered by my massive ***** size.

People on this board need to know when to bow down.

 

what is this, teh lounge?!

 

You forgot to mention they also work very well. Ask BMW and Mercedes, who continue to fit clutch fans to most of their cars. And my stock fan works perfectly despite being long out of warrantee. Are we still talking cars with longitudinal engines or have you included cars with transverse engines as well, which obviously have to use electric fans. Maybe US manufacturers have different preferences, but most of the FR cars over here (Japanese, European, Australian) still use clutch fans, often with auxiliary electric fans like some FC's have. Your faith in the catalogue figure is impressive. You assume the stock fan can't match those figures, but it has been proven to have no problems at all keeping the engine cool as long as the clutch is healthy. So the actual flow rate of the fan is irrelevant, because it works. Judging from posts on this forum, plenty of people who have swapped to electric fans have had cooling and electrical problems, mainly due to poor fan selection and/or incorrect installation. The stock clutch is designed to slip at ~3000rpm, because that's as fast as is needs to spin to do its job, so high speed isn't an issue. And those blades are only 8mm shorter than the Permacool's, so I don't know why you call then "stubby". I never mentioned any product, and prejudice is a silly word to use in a discussion of facts.
I actually really like electric fans, because I think they're a bit more efficient overall and are certainly more flexible. However (and this has been my point all along) I'm not going to go out and spend money replacing my stock fan (which works perfectly remember) with an electric fan based on the incorrect assumption that it'll work better. If (when?) my fan clutch fails then I'll probably replace it with an electric one, because that is the most cost-effective repair. Sorry, but I don't share your unhelpful attitude. If I can post info that might prevent someone's car from overheating or catching fire then I will, even if they don't like to hear it. If someone decides to "upgrade" to an electric fan unnecessarily, I'd still rather they did it the safe and correct way and not risk problems later. Even if they don't follow my advice, there are plenty of other people reading these threads who might find it helpful.

 

I only put electric fans on my cars to free up room.

 

never said they don't work .. however automotive companies are in business to MAKE money , therfore using the bare minimum to make the product work is all they require.. if your happy with that then good for you, enjoy.

Your faith in the automotive companies to supply you with a top shelf part is fairly niave too.. I've got a similar gen III supra and the first upgrade everyone makes , including myself is to dump the CLUTCH FAN for an electric, 20% cooler just by doing that is what allot of people report..I've seen my temps drop by an avg of 15C So if it works for my Supra, it will sure as hell work for my rx7..

by that exapmle alone you've proven my point, the 16" permacool spins at 1750 rpm to makes it's max CFM high speed IS an issuehigher speeds mean more stress also hooked up to an adjustable thermosensor, like mine is.. it only needs to run when it hits 170.. not all the time.. that's the same as having your AC run all the time regardless of the need for it, it just does...

when your biased against a product for no reason other then you don't like it or it costs money.. that's a prejudice..

um.. that last comment was a satrical one based on the fact that you were bitching about people not knowing how to wire up a fan... yet you made no move nor hinted at offering up a solution ..


to put an end to this from my point of view, it worked brilliantly on my 7M-GE to bring temps down and has worked for many others the same way.. that's enough reason for me to have done it..

 

y'all been helpful here except fer the ones that just went off the subject(no names mentioned) but like i said my stock fan works fine fer now!! so all this info. will be great if i ever have to replace my fan!! i will go e-fan when the time is right and connect it to a thermo type switch so it will turn on only when needed!! thanx and play nice guys!! PEACE!!

 

Clutch Fans don't suck...Infact, they do their jobs quite well. If I could go back In time, I would have left my Clutch fan In as opposed to the Black Magic e-fan I'm currently running. It cools better, by far.

Even for that matter, Wozzoom lost his Motor due to his Black Magic not coming on demand.

 

I'm happy because my stock fan works perfectly and doesn't need replacing. That's all. You read far too much into my posts. I never said anything about the stock fan being top-shelf, I just said mine works perfectly. Sounds like Supras have an inherent problem with their fans. Luckily FC's don't. Does the concept of a thermoclutch completely escape you? Most of the time they're freewheeling or only engaged enough to suit the cooling requirements, so the load on the engine is minimal. An electric fan places it's full load on the engine (via the alternator) when it's on and no load when it's off. The net result is about the same. Read my post again. I thought I was pretty clear that I like electric fans. I'm just not going to waste my money replacing a perfectly good component for zero gain. That's stupid. You must be joking. Do you know how many times I've "offered a solution" on electric fans? I've posted multiple times on how to correctly and safely wire electric fans. I've posted my own wiring schematic many times too. There are very few 7M's on this forum, so your expericence isn't really that relevant. The point is that the FC's stock fan (with a healthy clutch) keeps the temps exaclty where they should be. In suburban stop-start driving and in heavy traffic (when a fan does the most work) my temps never move. So why should I change it? Until it stops working properly, I won't.

 

why the big deal about going elelectric vs stock? The only difference is at idle and when the car is moving REALLY slow (in heavy traffic), where it doesn't make much heat, no matter how much power your car makes.

Once you're moving, the fan doesn't do a whole lot. That's why racers use electric fans on their race cars, so they can turn them off while on the track. Some don't even use fans (and we're talking about rotary racers here)