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Old 04-02-2011, 06:01 AM
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Electric fan for more power and mpg

The stock fan on our trucks just screams power loss. On the foxbody mustang the first thing i used to take off was the engine driven fan and i would replace it with a taurus fan. Made the throttle response so much better.

I was reading an article in diesel power about electric fans:

"16. It takes between 10 and 70 hp to drive the cooling fan, so cooling system maintenance can have a significant effect on fuel economy.

DP Diesel Power Note:
Replacing the stock clutch fan with a Flex-a-lite twin electric fan setup is said to recover 27 hp and increase fuel mileage by 6%."

Has anyone put on a E-Fan? I would like to make that my next mod. Not only would it free up power and mpg but make the front of the engine easier to get at for belt changes.
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Old 04-02-2011, 06:33 AM
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Subscribing. Interested in how this is going to turn out.......
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Old 04-02-2011, 06:43 AM
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So I am one of those fox body guys. I would say your power loss wouldnt be as significant as stated above. Also, I dont think it would be worth the effort or time on our trucks.

Just my thoughts, no Dyno 6.0 data for you on this.
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Old 04-02-2011, 06:49 AM
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I was also thinking about this. I always replace the fans on my stangs with electric. I can't see how there'd be any benefit to have a heavy as fan hanging on the front of a diesel.
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Old 04-02-2011, 08:19 AM
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I am getting the dual fan shroud from a friend soon. I am very anxious to get it and see how it does. I will do a write up in a month or 2 because I still have to get fans and the computer that controls them, after I get the shroud..
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Old 04-02-2011, 09:15 AM
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hey guys,
thought i would put some light on some of your questions. Ill start with the horsepower gains from it. Your not only gaining horse power from removing the belt driven fans, but your also going to see gains in the fact that the fan will be pulling air through the intercooler which will cool off the air which as most of you know will condense the air even more. One of the biggest things when looking for electric fans for diesels is one that push's enough air due to the fact that the radiator and intercooler on a diesel is larger than the average setup. I personally dont know how effective it is, however i have ordered an electric fan setup for my truck and i will do a writeup on it and see if I can get the local college to let me use the dyno since I was a student there anyways here is what im going to use for my setup. Flex-a-Lite 272 Ford Super Duty Diesel Fan with Variable Speed

If anyone has any questions Just let me know
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Old 04-02-2011, 09:32 AM
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awesome! thanks! I will be waiting for that wright up
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Old 04-02-2011, 09:47 AM
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Old 04-02-2011, 10:34 AM
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Doesn't the PCM control our fans and disconnecting it wouldn't cause a problem???
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Old 04-02-2011, 12:10 PM
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The PCM does. however disconnecting it shouldnt do anything, like throw codes or interfere with anything with the truck that would be vital. Its only a signal from the ecu when a Targeted area of tempterature is hit. The only thing its going to do is send a signal to the fan that isnt there. the PCM probably wont even notice a difference. And with bigger fans that are electric you could set the thermostat which would keep the engine cooler and would probably never reach the targeted temp to activate the stock fan anyways. Not 100% sure but ill look into it and include it in my writeup.
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