Base gasket seepage

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  • DomsKat550
    Forum Apprentice
    • Nov 2023
    • 47
    • Patchogue NY

    #1

    Base gasket seepage

    My 1982 GS550M Katana engine has some oil seepage from front of base gasket, will this effect compression and should I try tightening, or just leave it? Engine has all original gaskets with only 7,500 miles done in first 10 years bike sat in a garage for 30 years before I got it running. Thanks
  • Nessism
    Forum LongTimer
    GSResource Superstar
    Past Site Supporter
    Super Site Supporter
    • Mar 2006
    • 35790
    • Torrance, CA

    #2
    Once they start leaking, they usually won't stop after tightening. You can try, though. Nothing to lose. Leaking won't affect compression.
    Ed

    To measure is to know.

    Mikuni O-ring Kits For Sale...https://www.thegsresources.com/_foru...ts#post1703182

    Top Newbie Mistakes thread...http://www.thegsresources.com/_forum...d.php?t=171846

    Carb rebuild tutorial...https://gsarchive.bwringer.com/mtsac...d_Tutorial.pdf

    KZ750E Rebuild Thread...http://www.thegsresources.com/_forum...0-Resurrection

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    • Big T
      Forum LongTimer
      Past Site Supporter
      Super Site Supporter
      • Mar 2005
      • 12392
      • West Slope, OR

      #3
      Try cleaning the vent on the top of the motor and the hose going to the airbox
      The leak could be from excess crankcase pressure
      1978 GS 1000 (since new)
      1979 GS 1000 (The Fridge, superbike replica project)
      1978 GS 1000 (parts)
      1981 GS 850 (anyone want a project?)
      1981 GPZ 550 (backroad screamer)
      1970 450 Mk IIID (THUMP!)
      2007 DRz 400S
      1999 ATK 490ES
      1994 DR 350SES

      Comment

      • DomsKat550
        Forum Apprentice
        • Nov 2023
        • 47
        • Patchogue NY

        #4
        Ok thanks for info, everything gets better the more I ride it so maybe this will too, I installed a new hose when I adjusted my valve clearance,

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