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Engine seized on my GS 700e

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    Engine seized on my GS 700e

    I bought this bike a few days ago, 1985 GS700e, looked ok, ran great, sounded great, seemed like a perfect buy. Iv'e now ridden it about 70 miles and the engine suddenly seized. I was riding in town, grabbed the clutch to to down shift and the motor froze solid, haven't been able to turn it since. I'm wondering where to go from here, I've had a blast the last couple of days, so I'd like to keep the bike if I can, thanks in advance.

    #2
    I guess you have to find out why / how it has seized to work out whether it is repairable or junk.

    Take off the cam cover and see if the camchain is intact would be the first step.
    Current:
    Z1300A5 Locomotive (swapped my Intruder for it), GS450 Cafe Project (might never finish it....), XT500 Commuter (I know - it's a Yamaha )

    Past:
    VL1500 Intruder (swapped for Z1300), ZX9R Streetfighter (lets face it - too fast....), 1984 GSX750EF, 1984 GSX1100EF (AKA GS1150)
    And a bunch of other crap Yamahas....

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      #3
      Oil? Did the engine lock up or the tranny?
      GSRick
      No God, no peace. Know God, know peace.

      Eric Bang RIP 9/5/2018
      Have some bikes ready for us when we meet up.

      Comment


        #4
        The oil was clean, looked recently changed. Pretty sure its the motor itself, it still shifts and will roll in neutral. Probably won't get time to start digging until thursday.

        Comment


          #5
          How did the motor sound when it stopped? Did it just stop quietly or did it go bang?
          Current:
          Z1300A5 Locomotive (swapped my Intruder for it), GS450 Cafe Project (might never finish it....), XT500 Commuter (I know - it's a Yamaha )

          Past:
          VL1500 Intruder (swapped for Z1300), ZX9R Streetfighter (lets face it - too fast....), 1984 GSX750EF, 1984 GSX1100EF (AKA GS1150)
          And a bunch of other crap Yamahas....

          Comment


            #6
            I have a 83" 750 motor that will slide right in there. 18000, miles, needs stator cover yours should fit. $250. You pay shipping. PM me if interested
            1984 GS1100GK newest addition to the heard
            80 GS 1000gt- most favorite ride love this bike
            1978 GS1000E- Known as "RoadKill" , Finished
            83 gs750ed- first new purchase
            85 EX500- vintage track weapon
            1958Ducati 98 Tourismo
            “Remember When in doubt use full throttle, It may not improve the situation ,but it will end the suspense ,
            If it isn't going to make it faster or safer it isn't worth doing

            Comment


              #7
              Originally posted by hillsy View Post
              How did the motor sound when it stopped? Did it just stop quietly or did it go bang?
              No noticeable noise, I just thought it had died until it would crank back over.

              Comment


                #8
                Originally posted by hjfisk View Post
                I have a 83" 750 motor that will slide right in there. 18000, miles, needs stator cover yours should fit. $250. You pay shipping. PM me if interested
                Sent you a PM

                Comment


                  #9
                  I had similar symptoms when my cam bolt backed out and snapped the timing chain. I second pulling the cam cover to have a look at the chain.
                  Jordan

                  1977 Suzuki GS750 (My first bike)
                  2000 Kawasaki ZRX1100
                  1973 BMW R75/5

                  Comment


                    #10
                    Originally posted by hannibal View Post
                    I had similar symptoms when my cam bolt backed out and snapped the timing chain. I second pulling the cam cover to have a look at the chain.
                    So I pulled the valve cover to check the timing chain, but I'm having trouble finding it.


                    Damage report:
                    1 missing valve adjustment screw
                    2 broken tapits
                    1 broken chain

                    will update after more digging

                    Comment


                      #11
                      That's rough, mctaylor.
                      Looks like your helper in the background is just as surprised.
                      2@ \'78 GS1000

                      Comment


                        #12
                        Originally posted by steve murdoch View Post
                        That's rough, mctaylor.
                        Looks like your helper in the background is just as surprised.
                        He's thinking "In all my years as a shop dog I've never seen anything like this" ☺
                        My Motorcycles:
                        22 Kawasaki Z900 RS (Candy Tone Blue)
                        22 BMW K1600GT (Probably been to a town near you)
                        82 1100e Drag Bike (needs race engine)
                        81 1100e Street Bike (with race engine)
                        79 1000e (all original)
                        82 850g (all original)
                        80 KZ 650F (needs restored)

                        Comment


                          #13
                          Originally posted by storm 64 View Post
                          He's thinking "In all my years as a shop dog I've never seen anything like this" ☺
                          That look says "what did you just say?".
                          Alan

                          sigpic
                          Weaned on a '74 450 Honda
                          Graduated to an '82 GS850GL
                          Now riding an '83 GS1100GL
                          Added an '82 GS1100GL

                          Comment


                            #14
                            another victim of an improperly tightened screw adjuster?
                            1983 GS 1100 ESD

                            Comment


                              #15
                              Originally posted by greg78gs750 View Post
                              another victim of an improperly tightened screw adjuster?
                              Seems that way. I think, at this point, a new head is my best option.
                              Last edited by Guest; 05-19-2017, 02:05 PM.

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