View Poll Results: What's The Current Bore On Your 250r??

Voters
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  • Original Bore 66mm

    6 25.00%

  • .010 66.25mm

    3 12.50%

  • .020 66.50mm

    6 25.00%

  • .030 66.75mm

    3 12.50%

  • .040 67mm

    1 4.17%

  • 67.25mm

    0 0%

  • 67.50mm

    0 0%

  • 68mm

    2 8.33%

  • 68.50mm

    1 4.17%

  • 69mm+

    2 8.33%
Results 1 to 5 of 5

Thread: What Bore Is Your 250r On?

  1. 08-27-2007, 01:04 AM #1
    Rustytinhorn's Avatar
    Rustytinhorn
    Rustytinhorn is offline Just Too Addicted Arm chair racerJust too addicted
    Join Date
    Jan 2007
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    Utah
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    What Bore Is Your 250r On?

    Trying to get a feel of where our 250r's sit as far as getting worn out.
    A few wheelers, + an
    '73 Honda 49cc Mini Trail
    '85 200 Big WHEEL

    "Despite the cost of living, its still popular."
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  2. 08-27-2007, 12:57 PM #2
    deathman53
    deathman53 is offline Power User Teaching quads a lesson
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    2,676
    mine are big bore clyinders, that is why they are 72mm. My stock cylinders are 30 and 40 over.
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  3. 08-27-2007, 05:25 PM #3
    Billy Golightly's Avatar
    Billy Golightly
    Billy Golightly is offline Always finding new and exciting ways to not give a hoot in hell Catch me if you can
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    Blog Entries
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    68.50mm using the YZ250 piston on the flat tracker.
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  4. 08-27-2007, 08:04 PM #4
    vegas250rr's Avatar
    vegas250rr
    vegas250rr is offline At The Back Of The Pack Arm chair racerAt the back of the pack
    Join Date
    Dec 2006
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    Las Vegas, NV
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    stock bore!
    85 350X, 85 250R, 99 TRX 90, 05 Predator 90, 05 TRX 400ex, 2019 RZR4 XP100
    FEEDBACK for Vegas250rr
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  5. 08-27-2007, 08:09 PM #5
    Jason Hall's Avatar
    Jason Hall
    Jason Hall is offline Power User Roostin Away
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    Jun 2005
    Location
    Jackson MI
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    I have one .010. (my favorite 250R engine ever). another .040 another .060 & one pro-x big bore 72.25mm.

    83 ATC 60-R Cr60 converted with Zinger parts.
    83 ATC 70.
    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
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