|04-25-2011 10:30 PM|
I installed an electric fan in my 98 in the winter and it worked out fine. My only worry was i live in Florida and in the summer it gets hot. So far it's already been over 100 degrees and with my fan on the thermostat gauge never runs over more than halway between the first notch and the middle. The jeep runs cool. Sometimes i worry it doesnt get to operating temperature. I wired mine through a daystar rocker switch from 4wd.com. It worked great and looks factory. I first installed it through my radiator with the zip tie deals that go through the fins. They didnt bust my radiator but i didnt like them. I got a new radiator and used metal brackets and bolted them to the fan and radiator. I just turn my fan off when i go through water or anything like that.
|04-25-2011 08:09 PM|
|Jeep229R||I recently installed a Flex-a-lite radiator and electric fan which comes as a kit, model #60187. The install took about 2.5 hours with the hardest part being running the wiring neatly (easy install). The radiator is an aluminum 2-core with the fan moving 3000CFM and an optional cab fan-kill switch for water crossings. I have not been off-road since the install but am so far impressed with the airflow, presentation and slight increase in power/mpg.|
|04-22-2011 08:03 PM|
|04-22-2011 05:29 PM|
|Scoob||At the same time you have to wonder why jeep spent the time and money to put an elec fan on the 2.4 SE. I believe it was to add something back to a severely underpowered engine. I have never seen a dyno to prove it one way or another. But I just cant see jeep installing an electric fan in a TJ for no reason at all.|
|04-22-2011 05:15 PM|
|04-22-2011 03:05 PM|
Interesting - I put an electric fan on my Jeepster - and kept the mechanical fan too. I put the electric on the outside of the radiator. It was for low speed crawling here in the hot desert.
I ran the power through a switch and a light to remind me it's on.
When driving on the highway the light kept coming on - but the switch was off.
The fan spinning from the air flowing past was acting as a generator! It caused static on the CB.
I think I replaced the switch with one that grounded that feed line when it was off. No more problem.
|04-22-2011 01:44 PM|
|cnolan76||I was thinking more of a mpg saver. Even if it's only one or two mpg, that would be better than the 12 I am getting now. I have another car that gets close to 30 but it's not as fun to drive.|
|04-21-2011 10:43 PM|
"mounted in a good location it will not get caked in mud."
I have yet to find this place on the underside of my jeep.
Thanks for the input. Im still leaning toward electric but not by much. I have a feeling this is going to come down to clearance with the new rad and / or a coin toss
|04-21-2011 10:21 PM|
Also see my above post.
And yes, like I said the total energy needed to spin a plastic fan is less than a mech. fan, but after other factors the net gain is small.
|04-21-2011 10:17 PM|
|04-21-2011 10:14 PM|
|Scoob||If you are going to play in water an elec fan is MUCH better. Because you can turn it off. If the clutch is engaged on a mech fan trying to cool the engine and you take it in the water the blades will actually pull themselves into the radiator making a hole in the rad and a mess of the fan blade.|
|04-21-2011 10:12 PM|
Fresh water is not really a problem for low-voltage systems like an electric fan. The electrical resistance of fresh water is higher than most would suspect so with 12 volts, it's not much of an issue at all.
This is about the only reason to me that makes sense for converting from a mechanical to electric fan... so the fan can be shut off when driving through deep water. Though I hope everything else is properly protected from water incursion, especially if you have an older 3-speed automatic transmission like was used in 2002 and older TJs.
|04-21-2011 10:11 PM|
I dont expect some crazy jump in power of MPGs either. I dont plan on even being able to measure the difference in any way other then me telling myself "WOW shes running GREAT since i did the fan swap"
|04-21-2011 10:03 PM|
Do u happen to know the cfm of the mech fan? the electric i am looking at is around 3300 cfm. Not sure I agree with the Mech fan being the "most efficient" but I could b wrong.
The external trans cooler with the fan under the tub was my first thought, I even ordered everything material wise to do it, but I returned it all for the trans cooler radiator. IMO the remote cooler would b more of a liability because mounting it under the tub will subject it to being caked in mud and soaking in H2O when i sink the jeep up to the seats like I tend to do.
I appreciate the input and discussion, thank you
|04-21-2011 09:47 PM|
Don't do an electric fan swap hoping to gain power. As shown above the best reason for an electric fan swap is deep water crossings. The mechanical fan pretty damn efficient and pull a LOT of air compared to electric fans.
Electric fans are powered by electricity, that power HAS to still come from the engine as it is the sole power source of energy on our Jeeps (well technically gasoline, which is then converted to mechanical energy). The extra amp draw of the electric fan will require to alternator to work harder, in turn putting a load on the engine. Then you have to factor in lost energy due to mechanical energy now being converted to electrical energy then back to mechanical energy to spin the fan. This in itself is extremely inefficient. Put all these factors together and the gains are minimal.
Most people claim a HP increase because they put on a dinky 1k or 2k CFM electric fan.
Take the money you would put into an electric fan swap and do an external trans cooler with its own fan you can mount under the tub.
|04-21-2011 09:39 PM|
|just4fun||I got my fan from a ford taurus for around 35 bucks from the local you pull it yard.I had it on my mud truck for a few years and im looking to use it on my jeep. The taurus fan seems to be a popular install on jeeps. All you need is a good relay and heavy duty switch or a hook up that turns fan on and off automatically.|
|04-21-2011 09:36 PM|
|cnolan76||I found a Hayden radiator thermostat and a procomp 16" electric fan on amazon for around 50 bucks plus shipping. I'm thinking all I would need after that is a toggle switch and wire right?|
|04-21-2011 09:31 PM|
Only PERSONAL experience I have with them is that I know several in our club that run them. If you are going to play in the water at all they are nice to have.
I have often thought of doing that mod. The only thing that ever stops me is wanting to get other mods first. But I will have one some day. When I do I think I will go with the one from a 04-06 4 cylinder just for its ease of installation.
The thing I have noticed is they are much louder on the trail then the mech. fans.
|04-21-2011 09:16 PM|
|cnolan76||I've been considering the swap as well. I'm interested in advice from someone that has had an electric fan for awhile.|
|04-21-2011 09:10 PM|
Should I go electric?
My Tj has 180k ish and im about to swap in an automatic. I have been fighting with the thought of swapping out the factory mechanical fan with a shiney new electric one. I like the idea of more power and the increased cooling capacity of the electric, especially since I will be adding the heat from the trans to the radiators cooling duties. I am increasing the radiator to an aluminum 2.5" w the trans fluid hookups. The Cons also weigh heavy on my mind. I Live in Philly and the majority of my wheeling is WATER, MUD and Sand. I am concerned about loosing the fan in a mud hole over the pine barrens and blowing everything. If the fan were to hold up for a 2-3 yr period, i would be content with that. As long as the failure is not catastrophic.
My first time at RC I helped a kid off the trails who had an electric fan all coroded to poop and it just quit on him and he began to overheat and had to call it a day 10 min into the ride.
Im looking for some thoughts and criticisms of the idea, and if anyone has any PERSONAL experience w the electric swap.