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Thread: 250r Bore ?

  1. #1
    Join Date
    Apr 2005
    Location
    Easton, MO
    --
    142

    250r Bore ?

    I have the jug off the 85 getting bored . How can I check the relief on the exhaust bridge when i get it back. I have calipers but not a bore mic. Any help is appreciated.

  2. #2
    Join Date
    Jun 2005
    Location
    Jackson MI
    --
    1,688
    If you put a nice straight edge from top to bottom of the bore along the exhaust bridge, you can slide a feeler guage under It to check to see If It Is relieved enough.

    83 ATC 60-R Cr60 converted with Zinger parts.
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    83 Tri zinger
    ATC 85-R Cr85 engine on shortened 86-R frame.
    ATC450AF
    86 310-R Drag racer
    440 snowmobile powered custom built.
    87 Cr 500 Converted to Drag racer

  3. #3
    Join Date
    Apr 2005
    Location
    Easton, MO
    --
    142
    That's what I thought about doing. But was just a little curious if there was another method of doing it. Thanks!

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