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Thread: 83 250r piston

  1. #1
    Join Date
    Apr 2016
    Location
    Manitoba
    --
    60

    83 250r piston

    hello! just picked up a 1983 250r that is apparently just needs a piston. My question is the guy says the jug has been honed, would this change the size of the piston needed? or will the stock one still work. thanks

  2. #2
    Join Date
    Aug 2015
    Location
    Portland Oregon
    --
    174
    Just being honed doesn’t mean much. The cylinder needs to be accurately measured so you will know what sized piston will fit correctly. If run too long a cast OEM piston can rattle enough to break & take out the crankshaft. Do it correctly & save an accident.




  3. #3
    Join Date
    Apr 2016
    Location
    Manitoba
    --
    60
    What's that tool called??

  4. #4
    Join Date
    Oct 2013
    Location
    Wherever I May Roam
    --
    3,757
    Dial bore gauge. Used in conjunction with a micrometer, you need to measure the cylinder top middle and bottom on 2 axis'.

  5. #5
    Join Date
    Apr 2016
    Location
    Manitoba
    --
    60
    Thank you!!

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