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Custom Dodge Ram Performance Mods - Engine - 5.9 Liter V8 Discuss modifying your Dodge Ram with Performance Parts and Accessories!


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  #1  
Old 06-13-2012, 05:58 PM
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Ryank Ryank is offline
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Default Electric fan done!

So i got my electric fan done, ended up getting a 16'' fan from oreillys, and the wiring kit, as well as a 180 degree thermostat. I made my own mounts and mounted it to the original shroud. My problem is the truck is running hotter know, any suggestions? im thinking of buying a second fan? also the wiring kit has the wire for the positive on the fan clutch, but i cant find that wire, where is that located?
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Old 06-13-2012, 06:29 PM
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Sounds like you did not buy a large enough fan. How many CFM is the e-fan you purchased?

You need 3,000 CFM+ to cool the engine.

Look into the Taurus e-fan swap, ~4,500 CFM for about $30.
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Old 06-13-2012, 06:33 PM
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That fan i bought is like 1600 i think, thats why im thinking of buying a second one?
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Old 06-13-2012, 10:07 PM
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I'm going to be putting in a fan from a 1st gen intrepid. It a dual fan set up. I had the same fan and a 180 t-stat in my Dakota an never had any cooling issues even in the summer with the AC on towing a trailer. I've gotta get the time to put everything in. When I do I'll post pics.
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Old 06-13-2012, 11:23 PM
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Taurus fan from junkyard. Not much out there that can move more air than it, and it's cheap.
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Old 06-14-2012, 04:52 AM
double0ram double0ram is offline
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what years taurus are we talking about?
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Old 06-14-2012, 08:47 AM
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I don't know exact years but I believe late 90's(the bubble looking style taurus). Maybe even early 90's(the boxy looking style taurus)? Someone else will know. It's also all over the internet, a very popular mod for any car, so if you google it you can probably find what years.
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Old 06-14-2012, 09:05 AM
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Quote:
Originally Posted by snrusnak View Post
I don't know exact years but I believe late 90's(the bubble looking style taurus). Maybe even early 90's(the boxy looking style taurus)? Someone else will know. It's also all over the internet, a very popular mod for any car, so if you google it you can probably find what years.
Correct - early 90's Taurus with the 3.8 V6. Also found on Lincoln Continentals and Mark VIIs of the same vintage.

Grab a two speed fan relay from an early '90's Volvo, and temperature switches from Summit Racing. You'll need a circuit breaker or fuse (60A), and a heavy duty relay as well, for the ignition sense.

If this sounds confusing - put the stock clutch fan back on.

FWIW - I did this mod on my 2002 3.9 V6 Dakota, gained slightly better throttle response, but that was it. No MPG gain. Maybe, just maybe, freed up some HP, but it wasn't like the truck was a rocket anyhow, so it was tough to tell.

I also did this mod on my 2002 Durango. Gained nothing. I put the clutch fan back on for simplicity. The 4.7's generate a lot of heat, and since there wasn't any performance/MPG benefit, I thought why risk an e-fan only for nothing? I still hate the roar of the clutch fan in at the cold start, but the factory set up works well.
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Old 06-14-2012, 05:37 PM
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I think I'm just going to return the fan i bought and buy the ford taurus fan, i found them new on ebay for about 80 bucks, with the amount of air that thing pushes, i dont think ill have anymore problems!
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Old 06-14-2012, 08:23 PM
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Quote:
Correct - early 90's Taurus with the 3.8 V6. Also found on Lincoln Continentals and Mark VIIs of the same vintage.

Grab a two speed fan relay from an early '90's Volvo, and temperature switches from Summit Racing. You'll need a circuit breaker or fuse (60A), and a heavy duty relay as well, for the ignition sense.

If this sounds confusing - put the stock clutch fan back on.

FWIW - I did this mod on my 2002 3.9 V6 Dakota, gained slightly better throttle response, but that was it. No MPG gain. Maybe, just maybe, freed up some HP, but it wasn't like the truck was a rocket anyhow, so it was tough to tell.

I also did this mod on my 2002 Durango. Gained nothing. I put the clutch fan back on for simplicity. The 4.7's generate a lot of heat, and since there wasn't any performance/MPG benefit, I thought why risk an e-fan only for nothing? I still hate the roar of the clutch fan in at the cold start, but the factory set up works well.
Did the efan run continuously? If the efan is running, your not really gaining anything over the clutch fan.

Quote:
I think I'm just going to return the fan i bought and buy the ford taurus fan, i found them new on ebay for about 80 bucks, with the amount of air that thing pushes, i dont think ill have anymore problems!
I think the taurus fan is a 2 speed fan, so you can get a controller to run 2 speeds separately, or you can try the low speed and if it doesn't cool enough then hook up the high speed. The high speed draws a lot of power(which means hp) so if you don't need it don't use it. Could also wire the low speed on auto and wire the high speed on a toggle switch for emergency use...
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