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Old 04-29-2008, 06:27 AM   #1
sd88supra
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Default 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).
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-1987 5 spd N/A with TEMS: low miles! All stock with the exception of electric fans and an '89 front bumper, Yokohama 225/50/16 with stock rims. It's a mess and in the garage.

-1987 5 spd Turbo with TEMS: miss-matched tires, needs lots of work, but it runs! Project car.

-1988 N/A auto targa: all stock except 18" rims with Falken 265/35/18 in rear and 225/35/18 in front; daily driver.
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Old 04-29-2008, 06:45 AM   #2
sd88supra
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Default 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
==
==
==
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-1987 5 spd N/A with TEMS: low miles! All stock with the exception of electric fans and an '89 front bumper, Yokohama 225/50/16 with stock rims. It's a mess and in the garage.

-1987 5 spd Turbo with TEMS: miss-matched tires, needs lots of work, but it runs! Project car.

-1988 N/A auto targa: all stock except 18" rims with Falken 265/35/18 in rear and 225/35/18 in front; daily driver.
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Old 04-29-2008, 06:46 AM   #3
sd88supra
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Default

^that didn't come out right, but you get the idea.
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-1987 5 spd N/A with TEMS: low miles! All stock with the exception of electric fans and an '89 front bumper, Yokohama 225/50/16 with stock rims. It's a mess and in the garage.

-1987 5 spd Turbo with TEMS: miss-matched tires, needs lots of work, but it runs! Project car.

-1988 N/A auto targa: all stock except 18" rims with Falken 265/35/18 in rear and 225/35/18 in front; daily driver.
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Old 04-29-2008, 08:29 AM   #4
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Quote:
Originally Posted by sd88supra View Post
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).
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
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Old 04-29-2008, 11:35 PM   #5
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Quote:
Originally Posted by carfanatic89 View Post
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.
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-1987 5 spd N/A with TEMS: low miles! All stock with the exception of electric fans and an '89 front bumper, Yokohama 225/50/16 with stock rims. It's a mess and in the garage.

-1987 5 spd Turbo with TEMS: miss-matched tires, needs lots of work, but it runs! Project car.

-1988 N/A auto targa: all stock except 18" rims with Falken 265/35/18 in rear and 225/35/18 in front; daily driver.
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Old 04-30-2008, 11:47 AM   #6
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are your saying i need 2 fans? one in front and one in back of radiator?
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Old 04-30-2008, 04:18 PM   #7
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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.
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Old 05-01-2008, 05:37 AM   #8
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Quote:
Originally Posted by mkiiisupra View Post
are your saying i need 2 fans? one in front and one in back of radiator?
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......

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Old 05-01-2008, 07:58 AM   #9
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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.
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-1987 5 spd N/A with TEMS: low miles! All stock with the exception of electric fans and an '89 front bumper, Yokohama 225/50/16 with stock rims. It's a mess and in the garage.

-1987 5 spd Turbo with TEMS: miss-matched tires, needs lots of work, but it runs! Project car.

-1988 N/A auto targa: all stock except 18" rims with Falken 265/35/18 in rear and 225/35/18 in front; daily driver.
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Old 05-01-2008, 12:07 PM   #10
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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
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