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Busted piston skirts, New pistons?

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    #1

    Busted piston skirts, New pistons?

    Currently in a rebuild of my 82 650GLZ. Found the 4th piston's skirts (both front and back) are broken off. Cylinder walls are good, still need to check the crankcase for any damage but looks alright.

    My issue is replacing this piston. I'd like to replace them with a high compression set but not sure where or how to find this. I've been trying all the sites that I've been relying on but I'm not sure how to find this. Any ideas? Thanks.
    Tags: None
    #2
    Pretty sure there is no such things as high compression 650 pistons.
    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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      #3
      Sure!
      Shave the cylinder and cut bigger valve pockets into the stock pistons.
      Use silly putty on the valve pockets to make sure you aren't contacting valves with the pistons before you start it. ( by hand and not with the starter motor)
      1983 GS 1100E w/ 1230 kit, .340 lift Web Cams, Ape heavy duty valve springs, 83 1100 head with 1.5mm oversized SS intake valves, 1150 crank, Vance and Hines 1150 SuperHub, Star Racing high volume oil pump gears, 36mm carebs Dynojet stage 3 jet kit, Posplayr's SSPB, Progressive rear shocks and fork springs, Dyna 2000, Dynatek green coils and Vance & Hines 4-1 exhaust.
      1985 GS1150ES stock with 85 Red E bodywork.

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