gudgeon

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  1. D

    Is this cylinder wall okay?

    Hi guys, I think this is in the right section, please excuse if it's not. I'm still learning the ropes and I wasn't sure if this amount of scoring is something to be worried about? I'm kinda getting the worst of it in these pics, everywhere else seems quite nice in comparison. the crap...
    • Daniel.
    • Thread
    • bearing bore carbon clean up clearance conrod cylinder gudgeon head gasket hone nikasil rebuild rings scars torque valve water cooled yamaha yzf250
    • Replies: 24
    • Forum: General Tech Talk
  2. B

    Ducar Gudgeon pin stuck hard

    Hi, I got given a 2007 Atomik bike with a 125 Ducar motor last week. Some parts were missing, so after fitting a new throttle grip, carby and flushing the motor, although it started easy, it blew heaps of blue smoke. I stripped the engine to replace the piston and rings to find that the piston...
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