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Any suggestions for freeing stuck pistons in cylinder

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    #16
    Use the penetrant of choice from the suggestions. Leave plugs out and let sit for minimum of 2 weeks. Remove drive chain. Using 1st gear, Use HD impact driver on countershaft nut. you will have to rotate the engine backwards or the nut will loosen up. Someone chime in if turning backwards is a dumb idea.
    Current Rides: 82 GS1100E, 00 Triumph 955 Speed Triple:twistedevil:, 03 Kawasaki ZRX1200, 01 Honda GL1800, '15 Kawasaki 1000 Versys
    Past Rides: 72 Honda SL-125, Kawasaki KE-175, 77 GS750 with total yosh stage 1 kit, 79 GS1000s, 80 GS1000S, 82 GS750e,82 GS1000S, 84 VF500f, 86 FZR600, 95 Triumph Sprint 900,96 Triumph Sprint, 97 Triumph Sprint, 01 Kawasaki ZRX1200, 07 Triumph Tiger 1050, 01 Yam YFZ250F
    Work in progress: 78 GS1000, unknown year GS1100ES

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      #17
      Originally posted by limeex2 View Post
      Use the penetrant of choice from the suggestions. Leave plugs out and let sit for minimum of 2 weeks. Remove drive chain. Using 1st gear, Use HD impact driver on countershaft nut. you will have to rotate the engine backwards or the nut will loosen up. Someone chime in if turning backwards is a dumb idea.
      you do realize metal is impermeable? nd that any chemical reaction in galvanic corrosion would occure far sooner than two weeks?
      1983 GS 550 LD
      2009 BMW K1300s

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        #18
        Originally posted by Cipher View Post

        you do realize metal is impermeable? nd that any chemical reaction in galvanic corrosion would occure far sooner than two weeks?
        Yes. The time period mentioned is an attempt to give the penetrants time to work. With a seizure of this magnitude, what happens to the piston and bore are secondary to a point. Saving the pistons is out of the question and cylinders can be replaced, bored or re-sleeved depending on the owners intent on keeping it original. Any galvanic? corrosion has already occurred. The penetrants or other solutions mentioned here are petroleum based and should not cause more corrosion.
        Current Rides: 82 GS1100E, 00 Triumph 955 Speed Triple:twistedevil:, 03 Kawasaki ZRX1200, 01 Honda GL1800, '15 Kawasaki 1000 Versys
        Past Rides: 72 Honda SL-125, Kawasaki KE-175, 77 GS750 with total yosh stage 1 kit, 79 GS1000s, 80 GS1000S, 82 GS750e,82 GS1000S, 84 VF500f, 86 FZR600, 95 Triumph Sprint 900,96 Triumph Sprint, 97 Triumph Sprint, 01 Kawasaki ZRX1200, 07 Triumph Tiger 1050, 01 Yam YFZ250F
        Work in progress: 78 GS1000, unknown year GS1100ES

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          #19
          I wonder if getting some schedule 40 electrical pvc pipe slightly smaller than the bore diameter & some steel angle iron or box tubing wide enough to strap heavy duty ratchet straps on each side of 1-4 cylinders & another angle iron/box piece below frame with wood shims between frame rails & oil pan. Cut the pvc pipe into 1/2" rounds over 2-3 cylinders to start (assuming 2-3 or more stuck than 1-4), crank ratchet straps to more than snug & work the bolt on end of crankshaft in the proper direction to push the pistons down from TDC. Or 2 all-threads with bolts on each end, drilled thru angle iron or box. Maybe a second set of hands to do ratchets while one works the crankshaft bolt.

          Have no idea if this would work, just a thought
          Last edited by Carter Turk; 02-02-2024, 04:34 PM.
          GS\'s since 1982: 55OMZ, 550ES, 750ET, (2) 1100ET\'s, 1100S, 1150ES. Current ride is an 83 Katana. Wifes bike is an 84 GS 1150ES

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