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  #1  
Old 08-24-2011, 12:51 PM
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does anyone make an electric fan kit for our trucks? I know I can do it all myself but id much rather spend the money and let someone else have the headache of designing the shroud and yada yada.

Also does anyone know if this sets any sort of CEL to take the stock fan off? Figure it would be worth a few ponies and It would ne nice to be able to control fan turn on/off points
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  #2  
Old 08-24-2011, 01:15 PM
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Your truck has an electric fan from the factory. It is what they called a "hybrid" fan system, an electric and mechanical fan. Some people have removed their mechanical fan with no issues (don't know how this would work with towing/heavy duty use, etc...) but most of those people also have a 180 tstat and tuner to adjust electric fan on temp. I believe the stock electric fan is set to run with AC on and at 222 deg F (that's what superchips tells me, even though I swear I've heard the electric fan at around 205 F).
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Old 08-24-2011, 06:41 PM
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Maybe taking the stock clutch fan off and putting on a dedicated "pusher" would help? Its def something I will experiement with once they make tuners for these 2011s
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Old 08-24-2011, 08:31 PM
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I'm not sure but isn't a "pusher" fan one that blows air from inside the engine bay, through the radiator, and out the grill? I assume the stock fan is a "puller", along with almost all electric fans. I would think a fan blowing out would not help, as the air pushed through the grill while driving would counteract this....? I think a puller would be MUCH more efficient. I think the stock electric fan is enough, I wouldn't change this unless you experience overheating once removing the clutch fan. If you do experience overheating I think the first step should be to put in a 180 tstat.
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Old 08-24-2011, 09:08 PM
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Quote:
Originally Posted by snrusnak View Post
I'm not sure but isn't a "pusher" fan one that blows air from inside the engine bay, through the radiator, and out the grill? I assume the stock fan is a "puller", along with almost all electric fans. I would think a fan blowing out would not help, as the air pushed through the grill while driving would counteract this....? I think a puller would be MUCH more efficient. I think the stock electric fan is enough, I wouldn't change this unless you experience overheating once removing the clutch fan. If you do experience overheating I think the first step should be to put in a 180 tstat.

A pusher goes on the front of the radiator and pushes air through the radiator faster. Its mainly for sitting in traffic/around town driving when you may not get as much air over the radiator like you would at say, freeway speeds.

A 180* stat wouldnt do a thing unless you can tune your fans on earlier, and with a 2011 not being able to be tuned all it would do is let the stat open a littl earlier and take a little longer to reach full operating temps
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Old 08-24-2011, 09:16 PM
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Quote:
A pusher goes on the front of the radiator and pushes air through the radiator faster. Its mainly for sitting in traffic/around town driving when you may not get as much air over the radiator like you would at say, freeway speeds.

A 180* stat wouldnt do a thing unless you can tune your fans on earlier, and with a 2011 not being able to be tuned all it would do is let the stat open a littl earlier and take a little longer to reach full operating temps
ah! gotcha. Wouldn't the stock efan basically do the same thing by pulling through the radiator.....I guess I just don't see what you're accomplishing by changing the setup?

Right, I meant once a tune is available...
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Old 08-24-2011, 10:32 PM
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Theirs a kit out. Do a goggle search. I cannot remember where I saw it. Its probably worth 15 hp but you will need to buy and overdrive pulley kit. Thats the only way to take advantage of the eFan.
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Old 08-24-2011, 10:37 PM
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I just don't understand.....why change the stock efan setup if others are running just the stock efan with no mech fan without issues??? I would try it and see what happens and if you have overheating issues THEN address them possibly with an aftermarket kit/fan....I just don't see the need or reason for this. I would think just removing the stock mech fan would free up no more than maybe 5 hp(assuming your clutch is working properly). An underdrive pulley would be a great addition to this mod...
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  #9  
Old 08-25-2011, 01:27 AM
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I didnt know about the "hybrid" setup when i made this thread. It would be interesting to see when the stock efan kicks on temp wise. Ive had a few vehicles hace heating/cooling problems before and Id rather spend $70 for an extra efan for an insurance policy than have temp problems. Ill tackle this once tuners are available so I can control the stock fan
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  #10  
Old 08-25-2011, 08:04 AM
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gotcha. for reference, superchips tells me that the stock on temp for the efan is 222 deg F (I assume hemi is same as 4.7L, although I'm not sure). I swear though that I've heard the fan come on earlier, like around 205 or so....so who knows. They told me it's possible that there is another setting that they don't see and can't adjust...
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