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Thread: raptor crank/flywheel

  1. #1
    Join Date
    Apr 2011
    Location
    chillicothe,mo
    Posts
    32

    raptor crank/flywheel

    This might be posted in the wrong spot but this was the only forum for raptors I found here.

    My buddy has a 350 raptor. 2007. Pretty low hours on it. Hasn't been road hard. It came up with a nock and small metal particals in the oil. Really sounded like a rod. A loud solid nock .We took it apart yesterday. I didnt have the puller for the flywheel
    so we took the motor to the yamaha dealer here in town and had it pulled off. It was very tight on the crankshaft, not loose in any way. We discovered what you see in the pics. The key way was still intact and was not sliped at all. But the crank and this hub are ruined. The rod was good and tight and all of the tranny gears we good. Can some one explain what happened here?

    Sorry for the bad pic of the crank,will try to get better one tomorrow. It looks worse than the flywheel hub tho. Yamaha shop didn't have any idea what caused this.

    Photobucket

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    2002 400ex TT race bike (For Sale)
    11:1 Wiesco stock bore, stage 2 hot cam, Pro Circuit Head pipe, FMF power-core 4 slip on, Dynateck CDI, 450R carb 50pilot/180 main, CRJ rear lowering link, Full Flight +2+1 a arms, Lonestar +2 axle,Elka stage 1 fronts, Elka Stage 3 rear, Motion Pro twist throttle, Pep steering stabilizer, Baja skids.,maier Plastic, ITP T-9 wheels, Hoosier/American racer SD-33/razr tt, Durablue swaybar

    2002 440ex trail Bike
    440 namura 11:1, Stage 3 Hotcam, Big gun CDI, Sparks X6 exhaust, 450R carb, CFM oil tank, roll +1 Swinger, Rpm Carrier, Tusk +2 Axle, Leagers +2+1 A Arms, Houser +1 stem, 450R Front shocks,CRJ lowering link, Durablue front lowering kit, geared 15/38, Maxxis Razars

    1997 Yamaha Banshee basket case
    a rebuild in progress

    2008 Polaris sportsman 800EFI work bike

  2. #2
    Join Date
    Feb 2009
    Location
    ontario, Canada
    Posts
    3,135
    bearings?
    01 Raptor 686R
    lonestar +3a-arms- +2 swinger/ axcaliber+3/ elka's
    hmf full system-K&N filters
    GYTR full skids-shift lever- brake lever
    yukon tranny-one way starter bearing
    686 wiseco
    cam, oil, speed limiter mods
    3 spark plug head, high vilocity ported, stage 3 cam, maier plastics, gusseted PC'd frame,
    05 Ram reg cab short box
    and a shed full of other toys

  3. #3
    Join Date
    Apr 2011
    Location
    chillicothe,mo
    Posts
    32
    Nope all the bearings were good. Not sure what caused it
    2002 400ex TT race bike (For Sale)
    11:1 Wiesco stock bore, stage 2 hot cam, Pro Circuit Head pipe, FMF power-core 4 slip on, Dynateck CDI, 450R carb 50pilot/180 main, CRJ rear lowering link, Full Flight +2+1 a arms, Lonestar +2 axle,Elka stage 1 fronts, Elka Stage 3 rear, Motion Pro twist throttle, Pep steering stabilizer, Baja skids.,maier Plastic, ITP T-9 wheels, Hoosier/American racer SD-33/razr tt, Durablue swaybar

    2002 440ex trail Bike
    440 namura 11:1, Stage 3 Hotcam, Big gun CDI, Sparks X6 exhaust, 450R carb, CFM oil tank, roll +1 Swinger, Rpm Carrier, Tusk +2 Axle, Leagers +2+1 A Arms, Houser +1 stem, 450R Front shocks,CRJ lowering link, Durablue front lowering kit, geared 15/38, Maxxis Razars

    1997 Yamaha Banshee basket case
    a rebuild in progress

    2008 Polaris sportsman 800EFI work bike

  4. #4
    Join Date
    Feb 2009
    Location
    ontario, Canada
    Posts
    3,135
    why didn't you ask the yamaha dealer....I can't tell much from the quality of those pictures
    01 Raptor 686R
    lonestar +3a-arms- +2 swinger/ axcaliber+3/ elka's
    hmf full system-K&N filters
    GYTR full skids-shift lever- brake lever
    yukon tranny-one way starter bearing
    686 wiseco
    cam, oil, speed limiter mods
    3 spark plug head, high vilocity ported, stage 3 cam, maier plastics, gusseted PC'd frame,
    05 Ram reg cab short box
    and a shed full of other toys

  5. #5
    Join Date
    Jul 2009
    Location
    The Rubber City
    Posts
    1,245
    The 350 forum is in a sub forum under the hybrid section but you wont get much help for 350s on this site
    02 Warrior
    Lonestar, Elka, Houser, Yoshimura, American Star Racing, Flexx
    04 Crf50

    ohiomafiariders.com

  6. #6
    Join Date
    Jul 2009
    Location
    The Rubber City
    Posts
    1,245
    02 Warrior
    Lonestar, Elka, Houser, Yoshimura, American Star Racing, Flexx
    04 Crf50

    ohiomafiariders.com

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