Considering 79' GS850G

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  • zeli
    • Feb 2026

    #1

    Considering 79' GS850G

    I am considering buying a 1979 GS850G 14k miles per odometer. Seems like it would be a decent project. Owner says that it has a leak which is coming from the right side where the cylinder head meets the crank case. Does run but says it needs a tune. Any other major known issues to look out for. Any inputs/opinions on on whether it be worth it or pass on it. Thanks.
    Last edited by Guest; 07-13-2017, 02:30 PM.
  • dorkburger
    Forum LongTimer
    Past Site Supporter
    • Jan 2013
    • 10770
    • Stupid Freehold Boro NJ

    #2
    The oil leak and the sellers wording is concerning. The head connects to the cylinder, not the crankcase.
    If it is indeed a leaky head gasket or the base gasket (where the cylinder meets the crankcase. his wording causes this question), you will be buying a project bike. if the leak is just the valvecover gasket or the half moons, and leaking down, not a big deal. If that checks out ok, still figure for catching up on deferred maintenance, especially the valve adjustment.
    sigpic
    When consulting the magic 8 ball for advice, one must first ask it "will your answers be accurate?"

    Glen
    -85 1150 es - Plus size supermodel.
    -Rusty old scooter.
    Other things I like to photograph.....instagram.com/gs_junkie
    https://www.instagram.com/glen_brenner/
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    • zeli

      #3
      Hey thanks, yeah the wording isn't the best. I am suppose to go look at it Saturday. Did say that its a steady leak at high RPM's.

      Comment

      • zeli

        #4
        So I spoke with the seller again to get a better understanding and they confirmed that indeed it is the base gasket that is leaking. Right side where "block meets crankcase". He's asking $700 for the bike.
        IMG_2133.jpg
        Last edited by Guest; 07-13-2017, 04:40 PM.

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        • Nessism
          Forum LongTimer
          GSResource Superstar
          Past Site Supporter
          Super Site Supporter
          • Mar 2006
          • 35790
          • Torrance, CA

          #5
          You sure that bike has 14k or 114k? Photo suggests the later.
          Last edited by Nessism; 07-13-2017, 08:22 PM.
          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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          • zeli

            #6
            Originally posted by Nessism
            You sure that bike has 14k or 114k. Photo suggests the later.

            I havent seen the bike. So it's one of those by what he said and what odometer shows type of miles. IMG_2134.jpg

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            • steve murdoch
              Forum Guru
              Past Site Supporter
              • May 2004
              • 8491
              • St. Catharines, On.

              #7
              I think that engine/exhaust look way too scruffy to only have 14,000 on it.
              2@ \'78 GS1000

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              • 2BRacing
                Forum Mentor
                • Jan 2009
                • 796
                • Onrus, near Hermanus, South Africa

                #8
                Yeah, the worn-away lettering around the warning lights on the gauges, and the fading away of the orange color on the tips of the speedo and tacho needles point to a well-used bike.
                1981 GS850G "Blue Magic" (Bike Of The Month April 2009)

                1981 GS1000G "Leo" (Bike Of The Month August 2023)

                Comment

                • Guest

                  #9
                  Pretty rough for 14K but it is only $700. Not a big fan of the 79' as it's a one year bike, the 80s and newer have some different features/ parts. Let us know how it goes in person.

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