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Thread: 86 k75 c weird noise 13 k miles

  1. #1

    86 k75 c weird noise 13 k miles

    Getting used to this new to me K. There is a noise that is worse when cold. Sounds to me like itís in what would be the bell housing. Sounds like a loose bearing at about 1500. It might be something of concern or maybe not. I know thatís not a good description.

  2. #2
    3 Red Bricks
    Join Date
    Jan 2007
    Pleasanton, Ca.

    Is this with the bike moving in gear or stopped with the clutch in or in neutral?


    Ride Safe, Ride Far, Ride Often

    Lee Fulton Forum Moderator
    3 Marakesh Red K75Ss
    Mine, Hers, Spare

  3. #3
    Registered User GTRider's Avatar
    Join Date
    Apr 2006
    Nibley, UT USA
    That sounds like side slap between the gears in the intermediate housing. Most all brick-k bikes acquire that noise sooner or later, and it doesnít cause any problem other than being acoustically annoying. Quieting it requires pulling the trans and the intermediate housing and re-shimming the gears and is generally not considered worth the time, effort, and expense. The noise is usually only noticeable at idle or below 1500rpm and not noticeable once underway.

    1983 R80ST ó 1984 R80 G/S-PD ó 2010 K1300GT ó 2018 R1200GS
    BMWMOA#52184, AMA#271542, IBA#138

  4. #4
    Noise is the same in neutral or in gear. With clutch engaged or not. Pretty sure Iím just going to learn to live with it. Just wanted to be sure

  5. #5
    #13338 PGlaves's Avatar
    Join Date
    Oct 2003
    "Big Bend" TX
    Listen where the alternator mounts at the right-rear of the engine. Hard, stiff, worn rubber cush drive pieces will make a noise.
    Paul Glaves - "Big Bend", Texas U.S.A
    "The greatest challenge to any thinker is stating the problem in a way that will allow a solution." - Bertrand Russell

  6. #6
    Nick Kennedy
    Join Date
    Nov 2011
    Telluride Colorado
    One cheap [ BMW owners' favorite word] and easy diagnostic tool to make, is a section out of a old garden hose, It can be fairly long if needed, like 4'.
    Put one end against your ear and the other in the vicinity of suspected noise and if it's there you will hear it.


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