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Thread: Vibration on M60B40 540i/6... pulleys? water pump? bearings?

  1. #1
    TC535i Guest

    Default Vibration on M60B40 540i/6... pulleys? water pump? bearings?

    I'm getting a cyclical vibration from probably 1500 to almost 3000 rpm, most noticable around 2200. It's motor-based, not center bearing/guibo/whatever, cuz it'll do it sitting at a stop sign in neutral, clutch in, it'll vibrate/resonate.

    The water pump has bad bearings, the fan has a lot of wobble, so I'm changing that this weekend, along with a new radiator (old one's leaking)... could that be causing my problem? I also have heard this vibration is normal (poor V8 balance), and bad motor mounts can exaggerate the symptoms, and I know my mounts are shot (if I rev it in neutral, it REALLY rocks back and forth.

    Any other ideas?

  2. #2
    Join Date
    Dec 2003
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    Eastern Tennessee USi
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    completely normal on the M60, the 3.0 is about the same rpms maybe a little lower on the high end vibration. It is impossible to make a 45degree V8 balance all through the range so the vibrations have to go somewhere. If it vibrated at say 5000 rpms it would blow up.
    95 E34 530I V2.37
    ===========
    Those who make peaceful revolution impossible will make violent revolution inevitable.

    John F. Kennedy

  3. #3
    Join Date
    Mar 2006
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    USA
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    motor mounts help a LOT!
    Alusil, Dinan DME | ITG Air Filter | Eibach/Bilstein HD | 26/20 Swaybars | Iridium plugs | Depo/ProLumen HID | Optima batt. | no AC | Stoptech brake lines, Frozen rotors, brass bushings, Superblue

  4. #4
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    your car is going to blow up. you need to give it to me.


    Quote Originally Posted by Alexlind123
    You're my hero.

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