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Cylinder Block stuck on pistons, '83 GS850

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    #1

    Cylinder Block stuck on pistons, '83 GS850

    Hello, first time poster, love all the information here! So, I have been cleaning up and rebuilding the top end on my 83 GS 850. Had everything removed and cleaned down to the pistons. Installed new rings, put the cylinders back over the pistons before realizing I had forgotten to gauge the rings. A month later I go to take the block off, and find that it's stuck. Now it was in the middle of winter and first thought that maybe some rust had bound it up. Tried some PB and beat on the pistons with a mallet, tried rotating the crank and only get about a 1/4" play in it. Tried gently prying the block up, but didn't want to damage anything so have been looking for a proper method for removing this old thing. Is heat the best method, and how much? Or something else?
    Any suggestion greatly appreciated.
    KP
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    #2
    Are you holding all the slack out of the can chain when trying to turn the crank?? Sounds like the chain has folded over and jammed into the cranks gear.
    MY BIKES..1977 GS 750 B, 1978 GS 1000 C (X2)
    1978 GS 1000 E, 1979 GS 1000 S, 1973 Yamaha TX 750, 1977 Kawasaki KZ 650B1, 1975 Honda GL1000 Goldwing, 1983 CB 650SC Nighthawk, 1972 Honda CB 350K4, 74 Honda CB550

    NEVER SNEAK UP ON A SLEEPING DOG..NOT EVEN YOUR OWN.


    I would rather trust my bike to a "QUACK" that KNOWS how to fix it rather than a book worm that THINKS HE KNOWS how to fix it.

    Comment

      #3
      Pull up on the cam chain and move the crank forward and back using the 19MM nut. This should wiggle the chain free of any folds and let it roll freely on the cranks drive gear.
      MY BIKES..1977 GS 750 B, 1978 GS 1000 C (X2)
      1978 GS 1000 E, 1979 GS 1000 S, 1973 Yamaha TX 750, 1977 Kawasaki KZ 650B1, 1975 Honda GL1000 Goldwing, 1983 CB 650SC Nighthawk, 1972 Honda CB 350K4, 74 Honda CB550

      NEVER SNEAK UP ON A SLEEPING DOG..NOT EVEN YOUR OWN.


      I would rather trust my bike to a "QUACK" that KNOWS how to fix it rather than a book worm that THINKS HE KNOWS how to fix it.

      Comment

        #4
        Ahh, thank you, ill give that a try. Yeah the chain fell in when I was trying to get the block back off.

        Comment

          #5
          Reach in with some hemos or a good magnet to retrieve the chain. And if you have already installed new rings I would just button it up and run it. Its gonna be fine.
          MY BIKES..1977 GS 750 B, 1978 GS 1000 C (X2)
          1978 GS 1000 E, 1979 GS 1000 S, 1973 Yamaha TX 750, 1977 Kawasaki KZ 650B1, 1975 Honda GL1000 Goldwing, 1983 CB 650SC Nighthawk, 1972 Honda CB 350K4, 74 Honda CB550

          NEVER SNEAK UP ON A SLEEPING DOG..NOT EVEN YOUR OWN.


          I would rather trust my bike to a "QUACK" that KNOWS how to fix it rather than a book worm that THINKS HE KNOWS how to fix it.

          Comment

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