Results 1 to 7 of 7

Thread: R1150RT water in muffler?

  1. #1

    R1150RT water in muffler?

    Hi folks,

    I pulled the stock muffler and cat off of my 04 R1150RT to do some other work on it and I noticed that it sounds like there is water sloshing around inside the thing. The bike has 12k on it and externally the muffler and cat look to be in good shape.

    I tried standing it up on either end and letting it sit for a while but nothing comes out in either orientation. I know that water is a product of combustion so it's not strange that it could be in there. I just don't get why it won't drain out. Has anyone else seen this?


  2. #2
    Fortis Fortuna Adiuvat Omega Man's Avatar
    Join Date
    Jan 2010
    Clogged hole in the low point in the exhaust?
    "You can do good or you can do well. Sooner or later they make you choose." MI5
    Mod Squad
    2009 F800GS 1994 TW200

  3. #3
    Is there a drain hole that I am missing?


  4. #4
    Registered User GTRider's Avatar
    Join Date
    Apr 2006
    Nibley, UT USA
    Are you sure that it’s water and not just loose carbon? Or possibly a loose section of the internal baffling?

    Water condensation is common in exhausts systems of vehicles that are routinely run for short distances, like commuters or grocery-runners. But it would be unusual to find significant condensation on a bike that is consistently run distances long enough to thoroughly heat engine and exhaust.

    1983 R80ST — 1984 R80 G/S-PD — 2004 K1200GT w/Hannigan S/C — 2010 K1300GT — 2018 R1200GS
    BMWMOA#52184, AMA#271542, IBA#138

  5. #5

    It's definitely liquid. The bike has not been run hard for a while so as you mentioned I'm hoping that it will fix itself once I start riding it regularly. Just seems like there should be some way for it to drain out from one end or the other.


  6. #6
    MOA #24991 Pauls1150's Avatar
    Join Date
    Apr 2008
    south of Los Angeles
    The flow path through the "muffler" section is very convoluted; that's how they get a good overall length after the initial restriction of the catalytic converter.
    It will probably take several iterations of inverting it up and down and around to get water out; I'd recommend that you try to drain it out the rear, so that any crud doesn't block the cat up front.
    Maybe a steady air flow in the "normal" direction would also help.

  7. #7
    Registered User AntonLargiader's Avatar
    Join Date
    Jul 2004
    Charlottesville, VA
    After one good ride it will be gone.
    Anton Largiader 72724
    Tech articles - YouTube
    Virginia Motorrad Werkstatt BMW motorcycle service and repair in central Virginia

Similar Threads

  1. Muffler dripping water R1200RT: Newbie owner question
    By mward in forum Hexheads/Camheads
    Replies: 7
    Last Post: 11-22-2014, 01:37 PM
  2. GSA Muffler MOD:)
    By Polarbear in forum Hexheads/Camheads
    Replies: 3
    Last Post: 11-15-2009, 11:18 PM
  3. water/oil pump water seal
    By jamesbruce in forum Flying Brick K-bikes
    Replies: 1
    Last Post: 05-26-2008, 07:12 PM
  4. Water? dripping from muffler?
    By deanzat in forum Oilheads
    Replies: 7
    Last Post: 10-31-2005, 03:24 AM
  5. Broken muffler hanger on 04 R1150RT
    By kioolt in forum Oilheads
    Replies: 1
    Last Post: 09-14-2005, 12:05 AM

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts