Electric Fan?
 

Some people say that electric fans are no good with our turbo'd cars.

Would like to put on Perma-Cool 19114 - Perma-Cool High Performance Electric Fans - summitracing.com

Rated 2950cfm and only 9.5 amps

So are the problems people have in electric fans going with cheap ones that dont pull/push enough air? Or is that simply not enough flow?

these have 5900 CFM however come with a hefty price tag lol

Perma-Cool 19513 - Perma-Cool Cool Pack Electric Fans - summitracing.com


Anyways if electric is not the way to go, any suggestions for stock fan replacement with a more lightweight set up?

With this radiator / fan upgrade also doing oil cooler ... rerouting filter and changing to a dual filter also using the old oil cooler for the tranny.

As well as replace all my radiator hoses w/ steel braided lines, as well as oil and tranny lines....

Anyone ever replaced this stuff w/ steel braided lines? any suggestions, what sizes needed? How do you get them to connect to stock hook ups etc.

holy shit, 5900 cfms with the second one...479 bucks though. if i had enough money id sell this flexalite i havent installed yet and buy that one. dont ever want my car to overheat or spin a bearing or something.

the main beef with electric fans that people have is that they supposedly dont push/pull as much air as the stock fan. noones really rated the stock fan though, and as far as i know no numbers have been produced. if going with an electric fan, id set the temp a bit lower than usual and get a good, quality fan....no cheap junk.

i use the perma cool listed 19114 and i built a shroud around it , ok i'm using a fluidyne radiator too
i mostly cruise @ 160-170 a little chilly but thats cruising temp m 50-60 mph la la la type driving
once you start stepping on the pedals the temp adjusts .i use an electric sender temp gauge . the stock gauge sucks big time

http://www.ddmcse.com/turbo/images/SANY2150.JPG

electric is the way to go!
 

It doesn't take rocket science to figure out that electrical energy can be obtained much more efficiently than mechanical energy (ok, but does take a little bit of physics). Electric fans is the way to go. It is much more efficient to power a motor via an electric current than a mechanism. Electric fans will get you more air flow with a lower energy requirement. It will take this energy from your battery instead of your gas, so be sure to have a good battery. And you don't need to be an electrical engineer to install them. The circuits are not complicated (reading instructions SOMETIMES helps).

Puller
 

I forgot, set the electric fans to pull. More are flows as a puller than a pusher. Or you can have one and one. I think the problem with people is that they don't set the fan so it blows air in the right direction!


Pusher Radiador Puller
==
==
-----> == -----> to engine
==
==
==

^that didn't come out right, but you get the idea.

Oh by the way, 6 of one half dozen of the other, your battery doesn't just make voltage, its supplied from the alt. and that gets its energy from the crank and the rod to the piston taking power and gas milage. It would probably be more efficient but still pull power and gas milage from the motor

Yes, but the energy the alternator needs to resupply voltage in the battery is much lower than the energy required to operate the fan clutch. Gas mileage difference is hardly noticeable if at all, but cooling efficiency is what we're after. I was referring to the battery because a 30 ampere fan can easily drain a crappy battery.

are your saying i need 2 fans? one in front and one in back of radiator?

no: just that electric fans can be set to rotate both ways. you want the fans rotating so that air is pulled into the engine bay, pulling the air through the radiator into the engine bay.

i still havent found anything that compares the stock clutch's cooling capacity to an electric fans capacity ='( with a newer/bigger radiator it will be better regardless but id still like to know, for knowledge sake.

yeah i think so, mrnickleye uses 3 as he has mentioned before becuz he lives in the "desert", i used 1 on mine and it was overheating but where i live it can be real hot outside sometimes 2 so i had to add another 1......
but i think with the 2nd you will be allright depending on where u live.... just my 2 cents......

Some cars actually come with one on the front and one on the back, as a pusher and puller. I don't know why, I just think they would be better as just pullers. If you're getting a bigger radiator be sure to get a large enough fan. If you live in very hot climate I'd go for a dual fan. I just have one large fan, but like MrNickleye, I have an override switch so I can keep it running whenever I want during hot days. In fact I think I might add another fan. Hot weather sucks. As far as the stock fan, don't worry about it, I guarantee it doesn't come near 2950 cfm. Take the load off your engine. It takes a much smaller load to recharge your battery.

sounds good ill definantly go with the electric. This cooling system upgrade is starting to get costly heh. ;)

But im also relocating the oil filter and changing to 2 filters, redoing the lines, adding a oil cooler, redoing tranny lines and prolly use'n the old oil cooler for the tranny fluid

No Fan
 

Will an 87 NA supra overheat if the single electric fan is not functional? Thanks

Your fan for the engine is powered by the pulley not electric. I believe what you are talking about is for the a/c and not cooling the engine.

the stock fan's cfm is measured from engine rpm, it varies. in case you didnt know CFM means cubic foot per minute
so if the fan is rated at 5900cfm that means it pushes/pulls 5900 cubic feet of free flowing air and each cubic foot of air is 1 unit of mass

Ok
 

Please understand I have an NA NON turbo. The fan is on the radiator it does not cool the condensor. I can't seem to get a straight answer as to if the fan not working can allow the car to overheat, from what I have read it is tripped either by the AC or the Temp sensor. Mine does not work at all, works if I hook it up direct to power, I swapped fan relays from my other car NO DIFFERENCE. Where do you guys run wires into the cab so I can switch this fan, I see no easy openings on the firewall. I don't have fans on my condensor I have one big 8 inch electric fan shrouded against the radiatior on the motor side just like an older MK2 celica supra non turbo. Thanks for your help I broke the tang thingie off my thrromostat and now am about to drill it.

You should have a fan powered by the engine pulley. If you do not it must be aftermarket. As far as I know every mk3 came with a belt driven fan and not electric.

Of course I have a pulley driven fan, I also have an 8 inch electric fan on the radiator not the condensor.

I only have a pulley driven fan and I can run around all day with the a/c, on a hot day, and be fine.

Did you check?

Coolant mixture
water pump
t-stat
air in the system

Checks
 

Yes I changed thermo, changed rad cap, burped it and burped it. I have not pulled the water pump.

i recommend changing the water pump and check your thermostat housing sensors

Term sensors
 

How do you check the thermostat sensors? My temp guage works as it should. I thought there was only one. Please explain, Thanks

Success
 

FIXED IT!
Here is the explanation I didn't want to clutter up the board any worse than I have! Thanks so MUCH!

http://www.toyota-supra.info/forums/...html#post84699