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x96283
Dodge Dakota
7/01/2001
03:25:22
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 Subject: Electric Fan
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Message:
Engine-00 Dak 5.9 R/T
If I were to convert to an electric fan what possible HP could be freed up? I also want to install a 180 tstat... Total increases in everyday perf? Track, if any? Cooler overall temp?
What model elec fans are people using? How much of a hp draw is the stock belt driven one? Are your elec fans set for constant or thermo-based engagement?
Location-Hawaii, I *never* use my heat.
Thanks with all the questions!
giusto
00 af cc r/t
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Kevin
Dodge Dakota
7/01/2001
09:56:46
|  RE: Electric Fan
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Message:
You should gain at least 5 hp going to an electric fan. Quicker throttle response. Overall temp should stay about the same if your cooling system is in good shape to begin with. Most folks on the forum are using the 16" Hayden Black Magic fan. I personally use the 16" Perma-Cool. The Black Magic is more expensive, but has a more secure mounting scheme. The fans can be set up for constant use or a thermostat can be ordered with the fan to control on and off by temp. All in all I think you will be happy going electric. Definitely go with the 180 t-stat.
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DAK2
Gen III
7/01/2001
22:24:38
|  RE: Electric Fan
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I/m not sure about the R/T but my 3.9 already has an electric fan as well as the clutch fan
from the factory. Electric fan runs all the time
when the A/C is on.Look under the shroud next to
radiator you may need a light to see into that area
Y2K DAK 3.9L 5 Spd OS/2 Keeps going&going&going
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Jeffster
Dodge Dakota
7/02/2001
00:21:42
| RE: Electric Fan
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Message:
Mine also has both. An electric and clutch fan. I am actually thinking about putting in a 180 T stat and removing the clutch fan alltogether and seeing if that's enough cooling. Living on the west coast of Canada the temps never get above 90 even in the hotest days of summer. If it starts to heat up I will just replace it untill they have an after market fan for the 4.7.
Has anyone tried this?? Seems like there are many many stupid little things that cost very little money to get instant improvments in performance out of this truck.
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Andy Bosi
Dodge Dakota
7/02/2001
01:15:07
| RE: Electric Fan
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Acually, I just removed my mechanical fan 2 days ago, just to see if the electric fan is enough to handle the cooling.
Location: Colorado. Air temperature: 70-93 degs. So far so good...
Don't know how it'll behave if I take it out to the Arizona desert in the middle of the summer. But for now, I'm enjoying the additional power from not having to drive the mechanical fan all the time.
/Andy
01 QC, 3.9L V6, 4x4, 3.92 LSD, 5 spd
180 T-stat, autolite 3923 plugs; MSD 6A & 8680
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Art
Dodge Dakota
7/02/2001
02:36:01
| RE: Electric Fan
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where you live jeffster Im in victoria and it does get over 90 although I`ve never seen the electric fan come on the rads in the 01`s are huge
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kerleyfries
Dodge Dakota
7/02/2001
14:20:01
|  RE: Electric Fan
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i have heard the whole thread and would now like to comment. i have a 2001 4.7 reg cab auto. i took off the belt driven fan and hard wired the stock electric fan to the ignition. this stock electric fan puts out the same cfm as the 16 inch permacool. i put a 160 stat in there and i have no cooling probs what so ever! i can run the ac and peddle to the metal for miles and have no cooling issues. it is awesome. the truck runs so much smoother and cooler.
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Jeff
Dodge Dakota
7/02/2001
15:16:27
| RE: Electric Fan
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Message:
How did you go about removeing the fan?
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Jeffster
Dodge Dakota
7/02/2001
15:31:09
| RE: Electric Fan
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Thanks!! My fan is coming off also. No kidding about the fan size Art. It's even bigger than the 5.9 liter!!
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Duner
Dodge Dakota
7/02/2001
15:46:09
| Love that Roar!
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I am very glad I still have both. Here in Phoenix my temp gauge sits right on the 210 mark until I run into stop & go traffic or shut it off and it gets a hot soak. Then the temp gauge gets into the 220-225 range as best I can tell. I then get to hear the stock mechanical fan roar very loudly until it gets back below the 210 mark. At least during our summers, I doubt the engine would survive without the mechanical fan. I'll probably be able to remove it during our winters.
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kerleyfries
Dodge Dakota
7/02/2001
16:18:54
| RE: Electric Fan
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Message:
well 1st of all i took the old fan off. there is only 1 bolt that keeps the water pump pulley on. you will never in a million years find a bolt that size at wally world or an auto parts store. what i did was take the clutch fan and beat the bearing and the nut out of the housing. this does seem like a pain in the butt, but it really was not big deal. either do that or try and find something to fit that thread size. a lock place might carry something that size but i would not know where else to find one. since the electric fan is only operated by the ac your trucks do not get the cooling power that it should. after me putting in the 160 stat and hard wiring the electric fan to the ignition my temp is right above the c in the dead of the heat even with the ac on. you all have to remember that i am in oklahoma. i reach temps well above 100 degrees, not including the heat index. so dont think that it wont work for you if you hit the 80's or 90's. just trust me. this is the best. oh yeah and i wired it to my cigarette lighter fuse in the fuze box, that way it comes on when i turn on aux or when the ignition on. this is also great in the staging lanes to get your vehicle cooled down before you race. cheap horsepower and cleanliness is what i am all about. i imagine that you are to. my email is clint.kerley@attws.com if you all have any questions.
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Jeffster
Dodge Dakota
7/02/2001
16:46:11
| RE: Electric Fan
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Message:
Kerlyfries.. I have no A/C in my truck. Does this mean that my electric fan has never even been used and is just there because it's a generic part.
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Andy Bosi
Dodge Dakota
7/02/2001
16:55:48
| RE: Electric Fan
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Message:
Jeff et al,
It was a pain in the A.. removing that fan clutch, until I figure out an easy way.
If someone knows how to attach a picture in this forum & tell me how, I can post a picture of a simple contraption to hold the pulley stationary so that the center bolt can be turned.
Basically, I used a piece of sheet metal, 4" x 8" 16 gauge, from the local HW store,plus 2 bolts, to form a very flat wrench, that engages 2 out of the 4 holes in the pulley to keep the pulley from moving.
/Andy
01 QC, 3.9L V6, 4x4, 3.92 LSD, 5 spd
180 T-stat, autolite 3923 plugs; MSD 6A & 8680
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kerleyfries
Dodge Dakota
7/02/2001
16:59:49
| RE: Electric Fan
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Message:
no as far as i know that just supplements your motor when it reaches a certain temperature. i believe that it is around 200 degrees and then the electric fan kicks in. with taking the clutch fan off and allowing the electric fan to completely run your system and the 160 stat everything will cool like a dream. your motor will never even get close to 200 degrees. why have your motor gain heat when it doesnt need to. that just robs horsepower. we dont need that now do we?
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kerleyfries
Dodge Dakota
7/02/2001
17:02:21
| RE: Electric Fan
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i got mine off by having my 300 lb friend take a pair of huge pliers and holding it around the pulley and it came right off. you just need a little muscle. its not on that hard, just keeping the pulley from moving is the real kicker
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Andy Bosi
Dodge Dakota
7/02/2001
17:17:13
| RE: Electric Fan
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Message:
I second Kerlies' observation regarding when the electric fan comes on.
The electric fan appears to be temperature-activated. I do not hardwire it to always-ON or anything like that, and it seems to function correctly.
Even while idling and running A/C, the electric fan turns on and off intermittently.
/Andy
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Duner
Dodge Dakota
7/02/2001
17:20:50
| RE: Electric Fan
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Message:
I just used a big wrench to bind up the belt and a big crescent wrench on the large nut on the pulley. A couple of quick raps on the crescent with a hammer and it spun free. I've had the fan off & on about 5 or 6 times. To cool my truck at the race track, I just pull the relay in the fuse block and plug in a jumper wire. *(This will give you a check engine light.)* When I'm done at the track, I just pull the jumper and plug the relay back in. Since I always clear the pcm before & after running it anyway, it's no big deal. The electric fan will come on without running the AC or even if you don't have any AC installed. If the PCM sees a high temp, it turns the electric fan on. I don't know for sure what that temp really is, just that mine has come on in the past even when I wasn't running the AC.
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kerleyfries
Dodge Dakota
7/02/2001
18:00:51
| RE: Electric Fan
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now duner did you get find a bolt to hold on the pulley or what. i could not find one and had to bash my clutch in and hack saw the bolt.
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Duner
Dodge Dakota
7/02/2001
18:09:53
| RE: Electric Fan
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The big nut that holds the fan & clutch portion will just freewheel on the pulley itself. The big nut doesn't actually hold the pulley on. It's only function is to hold the fan and clutch on.
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kerleyfries
Dodge Dakota
7/02/2001
18:12:28
| RE: Electric Fan
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yeah but unlike the older style that had the small 7/16 bolts holding the pully on these do not have that option. that would be the only thing to hold that pulley one. i would certainly not run my truck without some sort of pressure on that pulley. the belt is not enough to me to hold that on correctly.
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Art
Dodge Dakota
7/02/2001
19:14:32
| RE: Electric Fan
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Message:
Why dont you just wire the electric fan up to a switch so can turn it on and off manually or get one of those perma-kool switches to come on when you want and stay on for a few minutes at shutdown,guess I`ve never came near 200 yet cause its never come on yet
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kerleyfries
Dodge Dakota
7/02/2001
19:26:47
| RE: Electric Fan
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cause i think that toggle switches are a pain in the butt. try lettin your friend drive your car and then come back with the engine boiling because he forgot to turn the fans on. plus i would rather it run all the time anyway just to reinsure that my engine is being cooled and besides all you have to do is turn the engine on and you are ready to go
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Jeffster
Dodge Dakota
7/03/2001
00:00:27
| RE: Electric Fan
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I proded around looking at how it's wired and have decided to run a positive wire with a switch and splice it right into the exsisting circuit. This will allow the electric fan to operate normaly under the PCM's monitoring or by throwing the toggle switch for maximum cooling at the race way or when hot dogging. The best of both worlds and no risk of forgetting to turn the fan on as it's still hooked up to the PCM.
I did a couple electric fan tests today and found it alone drew enough air in to actually turn the clutch fan. It does a great job and moves the air nicely.
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Art
Dodge Dakota
7/03/2001
01:34:42
| RE: Electric Fan
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Message:
Ya but jeffster I doubt that fan is made to be on all the time,the motor doesnt look very heavy duty for a primary fan
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Jeffster
Dodge Dakota
7/03/2001
03:40:41
| RE: Electric Fan
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Probably true Art. I think having an optional switch for maximum cooling when needed will probably be fine however. No electric fan motors really look all that heav duty from what I have seen anyways and actually are only usually ever run when iddling anyways. The wind blowing through the rad when in motion with such a large rad will be pleanty adequate.
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