Tripple Threat fan kit from FFdynamics

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Oct 29, 2011 | 06:45 PM
  #31  
Have you looked into the dirtbound offroad triple fan kit. There are reviews they did themselves on cfm and cooling and such over at naxja.org forums. The owner is a great guy.
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Oct 30, 2011 | 01:50 PM
  #32  
I just redid my cooling. Hesco therm housing, water pump, therm, CSF 3 row rad. I replaced every hose. I did the water wetter additive to rad fluid. My temp stays at around 195.
I'll soon add the Dirt Bound Offroad fans.
Their fans do not include the shroud. It's an additional $75. Making it $325. Seems like the extreme kit is cheaper in price.
Considering $200 for CSF rad and $325 for dirt bound fans. Wish I saw this months ago.
The CSF is a poorly crafted radiator. At least the one I got. It is Taiwanese. Go figure.
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Oct 31, 2011 | 10:24 AM
  #33  
I had cooling problems ever sense the day I bought my 2000, a month later needed a new stock one, still ran like sh**... this past summer I put a all metal 3 core from

https://www.radiatorbarn.com/

she runs like new now. with all stock components other than a high flow rathermostat house, I have one of those ffd triple electric fan kits I'm not using now, never installed, I'll sell to whoever wants it.
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Oct 31, 2011 | 11:31 AM
  #34  
My take on things is this:

Shroud design is tricky, and tiny changes can make a huge difference in fan effectiveness.

I wouldn't mess with the standard FFD kits. For my money, I'd only consider the full-blown kit including radiator and shrouds. It's the only way to guarantee that the air being moved by the fans will actually cool the radiator--I've heard nothing but good about that kit.

The Dirtbound kit seems to get mixed reviews. If they specify a particular radiator to go with the shroud, then maybe it works well with that. But putting their fans and shroud on a random radiator is going to give random results. I also think their controller is suspect. Two out of the three fans don't kick in until the temperature hits 205. Guess what--you're never going to run at less than 210 on a hot day! I'd use somebody else's controller.
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Nov 2, 2011 | 11:38 PM
  #35  
Quote: I just redid my cooling. Hesco therm housing, water pump, therm, CSF 3 row rad. I replaced every hose. I did the water wetter additive to rad fluid. My temp stays at around 195.
I'll soon add the Dirt Bound Offroad fans.
Their fans do not include the shroud. It's an additional $75. Making it $325. Seems like the extreme kit is cheaper in price.
Considering $200 for CSF rad and $325 for dirt bound fans. Wish I saw this months ago.
The CSF is a poorly crafted radiator. At least the one I got. It is Taiwanese. Go figure.
The kit does come with a shroud, we offer the shroud separate for customers of the first version can upgrade if they wish.

Quote: My take on things is this:

Shroud design is tricky, and tiny changes can make a huge difference in fan effectiveness.

I wouldn't mess with the standard FFD kits. For my money, I'd only consider the full-blown kit including radiator and shrouds. It's the only way to guarantee that the air being moved by the fans will actually cool the radiator--I've heard nothing but good about that kit.

The Dirtbound kit seems to get mixed reviews. If they specify a particular radiator to go with the shroud, then maybe it works well with that. But putting their fans and shroud on a random radiator is going to give random results. I also think their controller is suspect. Two out of the three fans don't kick in until the temperature hits 205. Guess what--you're never going to run at less than 210 on a hot day! I'd use somebody else's controller.
We have tested the kit on stock, CSF 3 core brass, and Champion 3 core Aluminum radiators and they all have similar performance and the fit is the same.

I just redesigned the shroud to now have better radiator coverage and it now features a rib in between each fan so they are not competing for air. It bolts directly to the radiator and does not require cutting the radiator support anymore. This was a much needed design change.

I have been searching for an adjustable two stage fan controller and have a few possible ones in mind, I am just waiting for some sample units to arrive so we can test them and see if we want to change the kit to include them instead of the fixed temperature controller.
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Nov 3, 2011 | 12:36 AM
  #36  
Quote: We have tested the kit on stock, CSF 3 core brass, and Champion 3 core Aluminum radiators and they all have similar performance and the fit is the same.
Good to know, thanks.

Quote:
I just redesigned the shroud to now have better radiator coverage... I have been searching for an adjustable two stage fan controller and have a few possible ones in mind....
Good on ya! For what it's worth, I don't think FF Dynamic's controller is anything to write home about, either, but I'd rather have all the fans turn on at a selectable temperature than have only one fan turn on at the design temperature. Think about how the stock fan works--the big guy turns on at design temperature, and the electric one turns on at high temps or with the A/C. Ideally, I'd go with a two- or three-speed controller that runs all the fans the same speed, but with a PWM controller to set the fan speed.

If cost is no object, I'll take a fully variable-speed temperature controller with an in-dash temp readout dongle, please.
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Nov 3, 2011 | 11:54 AM
  #37  
Quote: Good to know, thanks.



Good on ya! For what it's worth, I don't think FF Dynamic's controller is anything to write home about, either, but I'd rather have all the fans turn on at a selectable temperature than have only one fan turn on at the design temperature. Think about how the stock fan works--the big guy turns on at design temperature, and the electric one turns on at high temps or with the A/C. Ideally, I'd go with a two- or three-speed controller that runs all the fans the same speed, but with a PWM controller to set the fan speed.

If cost is no object, I'll take a fully variable-speed temperature controller with an in-dash temp readout dongle, please.
The controller I run on my personal jeep is a Zirgo digital with on dash digital readout and on the fly temp adjustments, the problem is it is a single stage all or nothing deal. They also are not willing to offer dealer pricing, so I had chosen not to sell them even though it is a great controller.

Most the good controllers that I like, are about $100 - 150 so I don't know if the average person will want to spend more than half the fan cost on the controller. The PWM would be my favorite choice.

The reason we switched to the current sensor setup was due to the fact the flex-a-lite controller we had been shipping with the kits where failing. I have not had one of the current model come back as bad.

Wiring the fans to come on with the AC is not a problem, just one extra wire to connect.

Here is a photo of the new shroud, you can see the divider in between.
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Nov 4, 2011 | 12:59 PM
  #38  
When I made my own triple fan system with Zirgo fans I was able to mount them against (or very close to the radiator) using a couple pieces of aluminum, factory holes on the radiator brace, and some small 90 degree angle brackets on the bottom radiator slots. Seems to me there's a lot of extra space being used up with your shroud. If the fans were closer to the radiator there would be no need for the slats between the fans. Space between the fans and engine is very limited.

I've been using the flex-a-lite variable speed fan controller and it is worth it. The only drawback is not having an actual temperature number to set it with.

Dave
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Nov 4, 2011 | 11:36 PM
  #39  
Quote: Seems to me there's a lot of extra space being used up with your shroud.
No, the plenum created by the shroud design shown above is correct. You need some low-pressure volume to get the maximum air flow across the radiator at the low vehicle speeds where you really need the fans. In my opinion Dirtbound Offroad is doing the right things, assuming their tests come out acceptably.

Quote:
I've been using the flex-a-lite variable speed fan controller and it is worth it. The only drawback is not having an actual temperature number to set it with.
I'll look into that controller. I like the Zirgo controller a lot, but I'm not sure I'm willing to pay for it.
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Nov 5, 2011 | 03:01 AM
  #40  
Quote: I`ve been running the ff dynamics triple threat fans for a year now. to tell you the truth my stock fan kept my temp in check. since insalling the 3 fans my temp has increased. I`ve done everything to lower my temp. radiator flushings, changing my thermostat, I even added temp lowering additives. The only time my temp runs cool is at highway speeds. here in new york I deal with alot of stop and go traffic and my temp has been getting dangerously high to the point my check gages light comes on and my temp is about to overheat. I have set my fans to kick on before 210. In the winter my engine runs super cool. But in the summer I`m scared to drive any long distance. Mind you I take excellent care of my Xj she`s my baby, my pride and joy. what can I do to get my temp back down below 210 again the way it used to be. My mechanic tells me to go back to stock. Can anyone or does anyone have any ideas of what I can do. PLEASE!!!!
XJ Louvered Hood Panel

http://www.hylineoffroad.com/demo/pr...products_id=54
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Nov 8, 2011 | 06:31 PM
  #41  
So to get this right the dirtboud kit comes with just the shroud and fans? And what do you do about relocating the belt or do you even need to? If there are no modifications needed to rerout the belt im really interested in this kit.
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Nov 8, 2011 | 06:35 PM
  #42  
Quote: So to get this right the dirtboud kit comes with just the shroud and fans? And what do you do about relocating the belt or do you even need to? If there are no modifications needed to rerout the belt im really interested in this kit.
You do not need to reroute the belt. You just unbolt the fan and clutch and put the nuts back on to secure the pulley.
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Nov 8, 2011 | 06:50 PM
  #43  
alright thanks man
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Nov 8, 2011 | 08:21 PM
  #44  
I had to cut the bolts flush with the nuts. They were too close to the fans. Just something to keep an eye on.
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Nov 8, 2011 | 08:39 PM
  #45  
Quote: I had to cut the bolts flush with the nuts. They were too close to the fans. Just something to keep an eye on.
They send you new bolts to replace the factory studs and nuts...
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