I have Hayden 2791 waiting for me to install it. It will go with Derale 6 blade fan instead of OEM 5 blade.
Should you get a heavy duty fan clutch?
- Thread starter pagrey
- Start date
I finally installed my USMW 4-bolt fan clutch. Still not driving my Jeep so I can’t report quite yet but holy cow, it turns so much easier than the Hayden 2737 HD. It reminds me of about how the stock clutch felt when I removed it, which was still in good shape at the time. If it performs anything like my initial impression leads me to believe it will, then I think I concur with @freedom_in_4low and have found my forever-fan-clutch. Hopefully holds up long term.
I might be late to the party, but I replaced the fan clutch on my Tundra back in the winter. The clutch I removed was a USMW and it had “MADE IN USA” stamped on it, which gave a bit of confidence. It got stuck on full lock which is why I knew it needed replacing. Before that, it was very quiet even in the summer and followed the same characteristics as the Mopar one on my Jeep; loud at first but very quick to unlock once moving. I see no performance difference between this one and the OEM clutch that replaced it. This came off of a 4.7L V8.
When the Mopar unit on my Jeep goes out, I’ll probably give USMW a go. Seems that the consensus is Hayden does the job but generates too much noise; something that us barn-on-wheels owners aren’t too fond of.
When the Mopar unit on my Jeep goes out, I’ll probably give USMW a go. Seems that the consensus is Hayden does the job but generates too much noise; something that us barn-on-wheels owners aren’t too fond of.
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Was it decently old when you removed it? I’m not scared of it going bad eventually, as long as it’s a reasonable service life. That’s good that it worked appropriately up until the failure.
My main complaint about Hayden is how dang loud it is. Almost feels like there is no fan clutch and like the fan is bolted straight to the water pump.
The truck was at about 85k or so? I’m not sure if that is premature. The only gripe I have is when it failed it spewed the oil everywhere. I’m not sure if that was the original unit, I can’t remember what the OEM Toyota one was branded.
Fwiw, I'm still happy with the USMW. I see no performance difference against the Hayden, but I sure do enjoy tooling around at low speed and hearing the exhaust...of the car behind me...instead of just fan.
I take my kids to school 3x a week, in the morning when it's about 80 outside; about 4 miles of 45mph and stop signs every mile, then 5 of 55mph highway, then about 3 in town. The only time I hear the fan is taking off from a stop light after sitting for at least a minute or two, and the needle on the temp gauge never even touched the 1 in 210. I'm confident the Hayden engages at a much lower temperature than OEM does (the FSM describes a test sequence indicating that the fan should engage when the air off the radiator reaches approx 170), and that the USMW is a more equivalent replacement.
I take my kids to school 3x a week, in the morning when it's about 80 outside; about 4 miles of 45mph and stop signs every mile, then 5 of 55mph highway, then about 3 in town. The only time I hear the fan is taking off from a stop light after sitting for at least a minute or two, and the needle on the temp gauge never even touched the 1 in 210. I'm confident the Hayden engages at a much lower temperature than OEM does (the FSM describes a test sequence indicating that the fan should engage when the air off the radiator reaches approx 170), and that the USMW is a more equivalent replacement.
If you want a quiet car, buy an electric...
Fan noise doesn't concern me.
It doesn't "concern" me, but I don't need it to be overly aggressive either. When the aftermarket is significantly louder than the factory one, that to me tells me it's too loud, and that doesn't really provide any benefit.
Other than keeping the engine cooler. I want every erg of cooling power I can get - this thing has never run this cool since I've had it.
Well if you want that, go ahead and bolt up a solid fan with no clutch. More cooling power. There is a point where more fan doesn’t equal better.
You might have a different problem to address than additional fan clutch air movement.
That's the way it used to be done, actually. I want that fan turning max at idle, and it doesn't become loud until the high 2,000s RPM. I care...
It's not keeping the engine cooler by running when it's not needed, such as when it's not even hot enough to open the thermostat.
06jeeprubicon
New Member
You won’t get a response from him. This thread pertains to 00-06 models, so yes. Although recently US Motor works seems to be a better option than the Hayden offerings.
Andyroo Oz
New Member
Hi guys, just had the fan clutch replaced on my TJ 06 here in Oz. Since then when the tj gets up to temp and the fan kicks in full noise it sucks a lot of the power from 2000 rpm through to 3000. Has anyone noticed this as well? It's not a OEM or Hayden, cheap Chinese apparently. Thinking of putting the Hayden on but not sure if that fix the power loss issue. Jeep doesn't over heat anymore though.
I don’t think my Mopar fan clutch is operating correctly, but I wanted to ask in case I’m wrong.
Here’s a video of it, imo, not properly disengaged after sitting all night (current temp is 43*).
https://vimeo.com/915562573?share=copy
I bought the part three years ago to replace PO’s failed electric fan. This part may be why my gas mileage has dropped…it seemed too extreme to only be a winter fuel issue (if that’s even a thing in Tucson)
I may get this clutch if your are still having good luck with it @freedom_in_4low
Here’s a video of it, imo, not properly disengaged after sitting all night (current temp is 43*).
https://vimeo.com/915562573?share=copy
I bought the part three years ago to replace PO’s failed electric fan. This part may be why my gas mileage has dropped…it seemed too extreme to only be a winter fuel issue (if that’s even a thing in Tucson)
I may get this clutch if your are still having good luck with it @freedom_in_4low
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hard to tell how much force you're using to spin it, but mine does not freewheel after I spin it, either (it's sat overnight and the outdoor temperature is 48°F) so I'm not sure you can condemn it based on that.
Between the USMW and two Hayden's (including one that LOOKS just like the Mopar), they all even make audible fan noise when I first start. The difference however, is that the Hayden would ROAR the entire 5/8 mile out of my neighborhood and onto the main road, whereas the USMW quiets down before I hit the end of my 90' driveway.
When I got sick of the Hayden was when I was wheeling at high elevation in Colorado, with temps in the 40-50s, basically engine braking down an easy 3,000' descent for 2 hours, so basically zero engine load. My thermostat had malfunctioned and ECT wasn't even getting to 170 - I could barely hear my GMRS radio over the fan noise. It should not have been engaged at all according to factory specs which call for engagement when air coming off the radiator exceeds 170°F. The USMW seems to behave correctly this way - past the end of my driveway, I don't hear it unless the engine is actually up to temp and I've been at a stop light and the weather is well into the 80s.
I flicked it as hard as I could for the video (not sure if that helps...but tbh I thought it would move more than that).
Hmm ok. I may just need to get the USMW and experiment.
My fan is loud often (if not always), but I just didn't pay much attention. And I didn't have a previous viscous fan to compare it to. But, if it's not working correctly then I need to remove it. Only one way to find out for sure. (sigh)
Side note: I've also had what sounds like a raspy bearing noise that comes on only around 3600 RPM that's been racking my brain for a while. I thought it was an easy pulley-bearing fix but it was not.
I've confirmed the bearing noise is not from the following items:
- idler pulley
- tensioner pulley
- AC compressor
- alternator
I don't know if the Mopar fan clutch or water pump are the cause of the noise, but it's getting to the point where it's either that or something internal to the engine. The noise is not gradual it only comes on at 3600 (sounds like a super fast raspy hiss/scrape) and stops when I let off the throttle. (another sigh)
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