Aftermarket cooling?
Thread Starter
Seasoned Member
Joined: Oct 2017
Posts: 473
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From: Western Washington
Year: 1990
Model: Cherokee
Engine: 4.0L Renix
So I have been looking for a while for a triple fan setup that wouldn't break the bank. I think I found it.
FF Dynamics Extreme TT System
Has anyone heard of them? My thought here is that with the surface area, the CFM may not need to be as high as the clutch fan. Also it has the integrated fan shroud, and nice cages around the fans to protect hands and such.
My Jeep doesn't have an e-fan, and I really want to dispense with the clutch fan. Also, I don't have a shroud for the clutch fan, so this more direct style fan system would help tremendously. As always, thanks for the advice!
FF Dynamics Extreme TT System
Has anyone heard of them? My thought here is that with the surface area, the CFM may not need to be as high as the clutch fan. Also it has the integrated fan shroud, and nice cages around the fans to protect hands and such.
My Jeep doesn't have an e-fan, and I really want to dispense with the clutch fan. Also, I don't have a shroud for the clutch fan, so this more direct style fan system would help tremendously. As always, thanks for the advice!
Last edited by SirCyber; Nov 12, 2017 at 11:42 PM.
CF Veteran
Joined: Jan 2016
Posts: 1,242
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From: Newport News, VA
Year: 96 & 88 4 dr Cherokees
1) you'd be far better off finding a shroud for your clutch driven fan
2) that setup, per their own description, only has 3300 cfm total...that's 1100 per fan, and that is not enough
3) that setup may have more coverage than you currently have with no e-fan, but why don't you have an aux fan ?
4) and for that price, I'd be finding me a shroud and an aux fan from a JY
2) that setup, per their own description, only has 3300 cfm total...that's 1100 per fan, and that is not enough
3) that setup may have more coverage than you currently have with no e-fan, but why don't you have an aux fan ?
4) and for that price, I'd be finding me a shroud and an aux fan from a JY
Thread Starter
Seasoned Member
Joined: Oct 2017
Posts: 473
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From: Western Washington
Year: 1990
Model: Cherokee
Engine: 4.0L Renix
1, as stated I want to be rid of the clutch fan. I did that with my first jeep, had a friend help me set up a twin taurus fan setup, only turned both fans on when wheeling. No fans on hwy, and one fan in normal traffic. It's lighter without, gives a minor boost in power, and also I can run two of them to a two stage thermal sensor, and have one on a toggle... Or at least that's what I am thinking right now. Either way you look at it, those fans should be pulling more air directly through the radiator than a clutch fan and aux fan with standard shroud just due to the proximity, right? I know the raw numbers, and not discounting any opinion. Just seeing thoughts is all.
Some people that run those style sets up say their jeep ran hotter after vs stock.He is right on it lacking cfm to cool right and really the stock set up is better then most aftermarket stuff.
Thread Starter
Seasoned Member
Joined: Oct 2017
Posts: 473
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From: Western Washington
Year: 1990
Model: Cherokee
Engine: 4.0L Renix
Just realized that I didn't answer the other questions... The jeep merely didn't have an aux fan, nor shroud, when I bought it. Andrew, thanks for the input on that from people who have ran it. Do you know any specific situations or conditions?
As I mentioned, I know it's lacking at least 700CFM from just the clutch fan. I'm just getting ideas, and seeing what thoughts are out there. This could also serve for visitors searching and such. With stock style cooling, the clutch pulls around 4kCFM. I don't have numbers for the stock aux fan. I would like to do a CFM drag pull from the front side of the radiator, maybe that's something I can work on to give others input.
For now, keep it coming! Love the chat and seeing what others much more experienced than me have to say
As I mentioned, I know it's lacking at least 700CFM from just the clutch fan. I'm just getting ideas, and seeing what thoughts are out there. This could also serve for visitors searching and such. With stock style cooling, the clutch pulls around 4kCFM. I don't have numbers for the stock aux fan. I would like to do a CFM drag pull from the front side of the radiator, maybe that's something I can work on to give others input.
For now, keep it coming! Love the chat and seeing what others much more experienced than me have to say
Thread Starter
Seasoned Member
Joined: Oct 2017
Posts: 473
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From: Western Washington
Year: 1990
Model: Cherokee
Engine: 4.0L Renix
Well then, after a bunch more searching, I found someone who actually did what I was suggestion myself to do.
THIS says 2k mech fan 1350 aux fan? Mystery deepens... I'm gonna go and do some independent testing, also to answer everyone's continuing questions for this mystery.
THIS says 2k mech fan 1350 aux fan? Mystery deepens... I'm gonna go and do some independent testing, also to answer everyone's continuing questions for this mystery.
I like the factory hybrid Mechanical/Electric setup. Might have to override the Electric and stop for a few cool down periods, but one or the other is going to get you back out of the sticks.
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CF Veteran
Joined: Jan 2016
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From: Newport News, VA
Year: 96 & 88 4 dr Cherokees
I know you said you wanted to get rid of your clutch fan,.,,,I was politely trying to say that is a bad idea.
I know is my factory aux fan when you put 12v to it out of the jeep moves a heck of a lot of air.........not far off from a taurus fan.
How close the fans are to the radiator does not mean they will cool better.
In fact, they will likely move less air, as they can only draw air thru the radiator within the radius of the fan, if they are off the radiator an inch or so like the factory ones are, they would be able to pull from the area of the shroud, not just the radius of the fan like when they are right against it.
.
I know is my factory aux fan when you put 12v to it out of the jeep moves a heck of a lot of air.........not far off from a taurus fan.
How close the fans are to the radiator does not mean they will cool better.
In fact, they will likely move less air, as they can only draw air thru the radiator within the radius of the fan, if they are off the radiator an inch or so like the factory ones are, they would be able to pull from the area of the shroud, not just the radius of the fan like when they are right against it.
.
Last edited by TRCM; Nov 13, 2017 at 10:59 PM.
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Joined: Apr 2013
Posts: 781
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From: Dawson Springs, KY
Year: 1985
Model: Cherokee
Engine: 2.5L
I know you said you wanted to get rid of your clutch fan,.,,,I was politely trying to say that is a bad idea.
I know is my factory aux fan when you put 12v to it out of the jeep moves a heck of a lot of air.........not far off from a taurus fan.
How close the fans are to the radiator does not mean they will cool better.
In fact, they will likely move less air, as they can only draw air thru the radiator within the radius of the fan, if they are off the radiator an inch or so like the factory ones are, they would be able to pull from the area of the shroud, not just the radius of the fan like when they are right against it.
.
I know is my factory aux fan when you put 12v to it out of the jeep moves a heck of a lot of air.........not far off from a taurus fan.
How close the fans are to the radiator does not mean they will cool better.
In fact, they will likely move less air, as they can only draw air thru the radiator within the radius of the fan, if they are off the radiator an inch or so like the factory ones are, they would be able to pull from the area of the shroud, not just the radius of the fan like when they are right against it.
.
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Joined: Oct 2011
Posts: 731
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From: St. Albert
Year: 1989
Model: Cherokee
Engine: 4.0L I6
I know you said you wanted to get rid of your clutch fan,.,,,I was politely trying to say that is a bad idea.
I know is my factory aux fan when you put 12v to it out of the jeep moves a heck of a lot of air.........not far off from a taurus fan.
How close the fans are to the radiator does not mean they will cool better.
In fact, they will likely move less air, as they can only draw air thru the radiator within the radius of the fan, if they are off the radiator an inch or so like the factory ones are, they would be able to pull from the area of the shroud, not just the radius of the fan like when they are right against it.
.
I know is my factory aux fan when you put 12v to it out of the jeep moves a heck of a lot of air.........not far off from a taurus fan.
How close the fans are to the radiator does not mean they will cool better.
In fact, they will likely move less air, as they can only draw air thru the radiator within the radius of the fan, if they are off the radiator an inch or so like the factory ones are, they would be able to pull from the area of the shroud, not just the radius of the fan like when they are right against it.
.
I can't comment on the set up the OP linked to specifically, though.
Thread Starter
Seasoned Member
Joined: Oct 2017
Posts: 473
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From: Western Washington
Year: 1990
Model: Cherokee
Engine: 4.0L Renix
Thanks for the additional input. I don't have info for blowing out clutch fans, but I do go into some (at times) hood deep water.
CF Veteran
Joined: Jan 2016
Posts: 1,242
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From: Newport News, VA
Year: 96 & 88 4 dr Cherokees
If it is spinning when you hit water, it can damage the radiator if it is close enough.
I don't like pusher fans for just this reason, I've seen them get pushed into the radiator to the point you couldn't use it.
I found this set up and company they claim there kit will do 5000cfm http://www.ksuspensionlifts.com/stor...an_System.html
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Joined: Dec 2015
Posts: 467
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From: Sioux Falls, SD
Year: 2001
Model: Cherokee (XJ)
Engine: 4.0l
I found this set up and company they claim there kit will do 5000cfm http://www.ksuspensionlifts.com/stor...an_System.html


