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Thread: Curious - about rear dropping from Neut - Drive.

  1. #1
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    Default Curious - about rear dropping from Neut - Drive.

    I've got an auto, and I've always been curious as to what EXACTLY causes the rear to drop when you put the car in drive from neutral or park as well I believe.
    EuroLux:. Private Detail
    E34 1/'89 ///M20 2.5i: Lachsilber

  2. #2
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    Default

    torque

  3. #3
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    This is while standing still, no movement besides a running engine with foot on the brake - shifting from N -> D.

    Just idle torque?
    EuroLux:. Private Detail
    E34 1/'89 ///M20 2.5i: Lachsilber

  4. #4
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    Quote Originally Posted by CharlesAFerg
    This is while standing still, no movement besides a running engine with foot on the brake - shifting from N -> D.

    Just idle torque?
    yes, but the gear is engaged.

  5. #5
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    if u give it a tiny bit of throttle is squats more, and then you look tough!
    :P
    11/88 535iA

  6. #6
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    Quote Originally Posted by Michael999
    if u give it a tiny bit of throttle is squats more, and then you look tough!
    :P
    Quoted for truth (and tuffness )

  7. #7
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    The reason it happens is because when you switch into gear, the transmission begins transmitting torque through the drivetrain in the rear. This happens while your rear brakes are clamping down and not allowing the wheels to rotate. The torque goes through the halfshafts and because they are physically locked on the outter ends, the differential and rear subframe try to rotate. This causes the rear end to squat down.

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