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  •  » Clutch Fan

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    11/21/2025 8:34 AM  #1

    Michael H.
    I FYI 24-7

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    From: Laurel, MS
    Registered: 4/01/2013
    Posts: 914

    Clutch Fan

    Jieve's radiator question got me thinking about radiators and fans.
    I'm currently running a metal fan with clutch (I can't remember if it's 5 or 6 blade).

    In the Fox-body world I've heard people speak highly of these plastic clutch fans... supposedly they rob less power and allow the engine to rev quicker since they are lighter, while maintaining the simplicity of a mechanical fan.
    https://lmr.com/item/LRS-2733K/Mustang-Replacement-Fan-Clutch-Kit-79-93-50

    ...but they are for a reverse rotation water pump.  Has anyone ever tried to just flip the fan part around and bolt it to the clutch to reverse it?  If that worked you could paint it black and probably most folks would never even notice it.

    I guess the reason the idea is compelling to me is that I put a 351W in my '91 F-150 (built similarly to a 1st Gen Lightning engine) and went to an electric fan and I like how quick it revs without the mechanical fan, but I want to keep a mechanical fan on the 289 in my '67 Mustang due to simplicity and less electrical load.  I don't want to have to go down the rabbit hole of higher amp alternators.

     

    11/21/2025 8:44 AM  #2

    Bullet Bob
    Senior 24-7 FYI Addict

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    From: Montrose, Colorado
    Registered: 4/01/2013
    Posts: 4,939

    Re: Clutch Fan

    If you flip it, it'll still be a reverse rotation fan and it'll still blow the wrong direction.  And, it'll probably be into the radiator.

    BB1

    Last edited by Bullet Bob (11/21/2025 8:45 AM)

    "you get what you pay for, good work isn't cheap, and there are NO free lunches...PERIOD!"
     

    11/21/2025 2:52 PM  #3

    TKOPerformance
    Hyper FYIFORD ADDICT

    Offline

    From: Newark, DE
    Registered: 12/15/2014
    Posts: 7,869

    Re: Clutch Fan

    Went to an electric fan over a decade ago and have zero regrets.  

     

    11/21/2025 6:33 PM  #4

    6sally6
    Hyper FYIFORD ADDICT

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    From: Surfside Beach,SC
    Registered: 4/02/2013
    Posts: 6,982

    Re: Clutch Fan

    TKOPerformance wrote:

    Went to an electric fan over a decade ago and have zero regrets.  

     
    X-2...
    6sal6

    Last edited by 6sally6 (11/21/2025 6:36 PM)

    Get busy Liv'in or get busy Die'n....Host of the 2020 Bash at the Beach/The only Bash that got cancelled  )8
     

    11/23/2025 9:30 PM  #5

    TimC
    I FYI 24-7

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    From: Wheaton, Illinois
    Registered: 4/01/2013
    Posts: 889

    Re: Clutch Fan

    Those Foxbody plastic fans are notorious for cracking and breaking as the plastic ages, usually launching some fragment through the radiator. Fox forums discuss the failures.

     

     

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