I've spent some time reading a bunch of threads on dual electric fan setups (et all), and pretty much figured out what I need to make my own (some of the "kits" are ridiculously expensive).

The only thing I didnt see, was much (if any) talk about after-market performance fan & clutch assemblies (bolt-on replacements). Anything for late-model F150's?

Thanks for any info

 

Cool.... a stumper!

 

I've not personally used one of these, but it's a start:

Flex-A-Lite belt driven fan

 

If you're on a budget there some atricles where an electric fan from a Crown Vic. or Lincoln Mark 8 is used in conjunction with the stock fan shroud. I listed a pair below but there are others as well.

Good luck.

LINK

LINK

 

Thanks guys

Right now, I'm shying away from electric fans. Though I can make a setup pretty cheap, I'm not sure I want to introduce that many additional points of failure.

My truck gets used off-road quite a bit, back in the boonies, and a mechanical fan has advantages in that scenario.

Obviously the stock fan/clutch assembly is a freak'n tank, and reducing that rotational mass is gonna help for a little extra power.

 

Thanks guys

Right now, I'm shying away from electric fans. Though I can make a setup pretty cheap, I'm not sure I want to introduce that many additional points of failure.

My truck gets used off-road quite a bit, back in the boonies, and a mechanical fan has advantages in that scenario.

Obviously the stock fan/clutch assembly is a freak'n tank, and reducing that rotational mass is gonna help for a little extra power.

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Griffin,

Can you please share your solution? What Flex Fan did you use?

Manufacturer & Part#

Thanks!

 

I pulled the fan/assembly off my truck. Much to my surprise, the nylon/plastic fan isnt that heavy. My friend works a a local auto parts store, so I was able to "borrow" a steel replacement fan and a aluminum (non-clutch) fan.

I dont have the numbers here with me, but the aluminum fan was only marginally lighter (almost not worth noting) than the OEM (getting ride of the clutch in that case is what really saves you the weight). The steel fan was notably heavier than both.

In the end, I left it the way it was. My friend noted that some of the after-market clutches are more efficient than the OEM clutch, though it likely would not provide any notable power/mpg improvement.

 

That website advertises a clutch that has a thermostat built into it that supposedly engages at certain temperatures. Now that, in theory at least, sounds promising. I mean, isn't the whole idea behind electrical fans weight and fan speed? I know when I crank my truck up in the mornings, even during winter, that fan will run about wide open. Sounds like your ready for takeoff, and then it quites down. Am I missing something here? If we had a way to engage the fan, i.e. the clutch, to come on at certain temperatures, wouldn't that be the exact same operational theory as the electrical fans? Yeah, the fan setup itself weighs a few more pounds, but if the engine isn't turning it, then it shouldn't make a difference, correct????

 

Flex-a-lite has screw on adapters. Anyone know if they will work?

 

I believe the idea is to not have the engine (crankshaft) turn any fan, reducing the drain and strain on the pully eating HP.
probably give 10+/- hp with electric fans.

off road use in the mud I'd stay where you are--stock.

everything you do has a trade off
tuner=91 octane
tall tires=speedo off

look at both sides before you buy.

 

I have the Troyer Performance kit. I also play off road. I like the idea that i can stop the fans from turning when I go through water. ever see what happens to a rad when the fan turns into the rad? talk about walking home..... Izzy Eddy was with me when I last played in the mud. The engine had a ¼ inch thick coat of mud. Every thing worked as designed. At the time i did not have a way to manually turn on the fans and the secondary fan got caked with mud and it dried before I washed it off. Do not run a fan with mud caked on it will vibrate and selff destruck. The only thing I have added are the master Kill switch and individual back up turn on switches. No problems so far.

EDIT: Additional comments,
I will be relocating the controllers to a position inside the cab. Keeps the mud off them.

Regards

Jean Marc Chartier

 

I have considered going with a Flex-a-lite fan blade versus what i have now. I can not see paying the money for an electric fan that can fail so easily (had it happen in a car i had once) . My dad uses the flex-a-lite fan in his 93 f-250 and it seemed to help. He pulls a 28ft. old heavy camper with it and the only thing else that isn't stock is his exhaust. He had cat back straight pipes put on it and it is quieter than my old ranger was with either staright pipes or a glass pack muffler. The thing pulls great. I was pulling a 17ft. camper with my ranger i had(3.0 off road with 4.10's stock) and he just left me like i was sitting still pulling that big thing he has going uphill. Oh yea he is running a 351 in his truck also. My truck pulled great but for a small block his is unbelieveable! I now have a too high geared 2001 f-150 that really does not pull a whole lot better due to gearing and big tires and lift put on by the dealership i got it from. gonna eventuallly put 4.56's in it though.