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Engine Fan and Revving: What is too much?

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    Engine Fan and Revving: What is too much?

    '88 325is here.

    I've been wondering:

    I live in a warm climate. My main engine fan (the one that is synchronous with rpm) operates on a frequent basis.

    My main concern is this: sometimes, I gotta pull into traffic. However, I don't want to go above 4K with that engine fan in fear of damaging it or the fan clutch.

    What's your take on this, r3v? Does the fan clutch have some sort of safety mechanism that prevents damage? Do you guys baby it when you hear the fan kick in?

    Best,

    Pete
    Me: "I can't wait to redline my car!"
    Mark: "Didn't you just break a rocker arm?"
    Me: "Yeah, I don't think I've learned my lesson."
    Mark: "You never will."

    #2
    this doesn't make sense. the clutch fan only locks when it heats up. the rest of the time it freewheels. or are you talking about the electric fan? how do you hear a clutch fan kick in?

    in any case I've taken mine to 7500. I wouldn't worry about 4k..
    Build thread

    Bimmerlabs

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      #3
      I meant when it's locked when heated up and makes that "WOOOOO" noise as it runs up with the engine.

      Didn't want to bust the fan clutch by going to high in the rpm.
      Me: "I can't wait to redline my car!"
      Mark: "Didn't you just break a rocker arm?"
      Me: "Yeah, I don't think I've learned my lesson."
      Mark: "You never will."

      Comment


        #4
        The fan clutch is designed to slip if the load on it becomes too great.

        Also, you can get fan clutches for practically nothing. Why are you worrying about a cheap and easily replaced part?
        2006 GMC Sierra 2500HD 4WD LBZ/Allison
        2002 BMW M3 Alpinweiß/Black
        1999 323i GTS2 Alpinweiß
        1995 M3 Dakargelb/Black
        - S50B32/S6S420G/3.91
        1990 325is Brilliantrot/Tan
        1989 M3 Alpinweiß/Black

        Hers: 1996 Porsche 911 Turbo Black/Black
        Hers: 1988 325iX Coupe Diamantschwartz/Black 5spd

        sigpic

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          #5
          if bmw says the engine can rev to 6500-6700rpm stock, than all the parts attached to it are designed to handle that rpm. i wouldn't worry in the least.
          Originally posted by BillBrasky
          That's like Vlad challenging Chip Foose to a car painting contest.
          Originally posted by acolella76
          i'm pretty sure 'Phillis' is short for syphilis
          2007 CVPI, stock and slow
          1994 tercel, 5efhe swap, i/h/e
          1984 t-type, 5.3/th350 swap in progress

          My newest addition:
          Rebecca Arlene, born 4/19/2013

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            #6
            Hot damn this forum rocks! Thanks for the answers everyone!

            Originally posted by nrubenstein View Post
            The fan clutch is designed to slip if the load on it becomes too great.

            Also, you can get fan clutches for practically nothing. Why are you worrying about a cheap and easily replaced part?
            Hey, the less money I spend on my car, the more I have to spend on beer.
            Me: "I can't wait to redline my car!"
            Mark: "Didn't you just break a rocker arm?"
            Me: "Yeah, I don't think I've learned my lesson."
            Mark: "You never will."

            Comment


              #7
              Dude, you worry about the oddest things
              1989 cirrisblau-metallic 325i

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                #8
                remove the fan like me when it died. problem solved
                sigpic

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                  #9
                  and when your check engine & oil pressure lights come on, just cover them in black electrical tape. ;)
                  Build thread

                  Bimmerlabs

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                    #10
                    Originally posted by nando View Post
                    and when your check engine & oil pressure lights come on, just take the bulb out.

                    fixed :p
                    sigpic

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                      #11
                      Originally posted by SpecM View Post
                      Dude, you worry about the oddest things
                      Haha, yeah, I think I do, too.
                      Me: "I can't wait to redline my car!"
                      Mark: "Didn't you just break a rocker arm?"
                      Me: "Yeah, I don't think I've learned my lesson."
                      Mark: "You never will."

                      Comment

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