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Thread: uneven wearing in the cylinder means...

  1. #1
    Join Date
    Aug 2003
    Location
    Lafayette NY (near Syracuse)
    Posts
    102

    uneven wearing in the cylinder means...

    Hi everyone-
    Im in the process of rebuilding my 250x, and im going to get the cylinder rebored. However, on close inspection of the inside the cylinder, it appears to be worn unevenly(there are large scratch marks in some places and not others, etc). Im wondering if this means that something else is wrong with it....
    If anybody has any ideas id appreciate it
    Thanks!!
    Will
    2000 Polaris Trailblazer - sold
    2001 Honda 300EX-FMF Megamax II, K&N filter, Dynojet jet kit, 13t sprocket
    1987 Honda 250x - sold

    1995 Ford Probe GT - oh yeah!!!

    Looking for an LT250R or maybe a Blaster in NY

  2. #2
    Join Date
    Apr 2002
    Location
    cinci
    Posts
    4,103
    looking from the intake hwere are they?sometimes cylinders get oval shaped all the need is a honing sop if its a oval nuttin to worry about......

  3. #3
    Join Date
    Jun 2001
    Location
    Waterford, MI
    Posts
    2,448
    Ur cylinder will wear like that if you take in some water too. Mine did that .. I think I can ride through anything with no airbox lid
    440, Ross 11.5:1 piston, Web cam 479 grind, race port & polish, oversized valves, hardened rockers, CRF450 cam chain, 39mm FCR carb, lightened Flywheel, Stock clutch, WB CDI box, K&N filter , WhiteBrothers E-Series full exhaust, Sidewinder Chain, 15/36 gearing, open airbox, LSR Axcaliber +3.5 axle, Houser Racing +2 a-arms, Elka triple rate, fully adjustable front shocks, +1.25 Houser swingarm, Tag Metals X5 bars, Arens +1 steering stem, Muscle steering dampener, Stainless Steel brakelines, HeatSeeker temp. guage, Pro Design kill switch, DG Pro Series nerfs, 8 run Hauler paddles. ~~http://www.sounddomain.com/id/trick440ex~~

  4. #4
    Join Date
    Aug 2003
    Location
    Lafayette NY (near Syracuse)
    Posts
    102
    thanks a lot guys
    anyone else have any other ideas
    thanks
    Will
    2000 Polaris Trailblazer - sold
    2001 Honda 300EX-FMF Megamax II, K&N filter, Dynojet jet kit, 13t sprocket
    1987 Honda 250x - sold

    1995 Ford Probe GT - oh yeah!!!

    Looking for an LT250R or maybe a Blaster in NY

  5. #5
    Join Date
    Oct 2002
    Location
    Nevada
    Posts
    9,647
    There is a possibility that your crank isn't true, but that is doubtful.

    For the most part, I would bore it out, replace the piston, and don't worry too much about it. Keep it in mind when you rebuild it the next time, and see if it shows the same signs. If you see it again on your next rebuild, then dig deeper into the engine to find the cause. My bet says the problem dissapears with a new piston and bore.
    Duncan Racing 340PV, +2 A-arms, +4 LSR axle, and a host of other goodies.

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