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Thread: piston problem

  1. 04-18-2007, 08:10 PM #1
    team-red-rider's Avatar
    team-red-rider
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    piston problem

    hey guys on my 125 i was riding it then it died...ok i poped the head off the exhaust side of the piston is F'ed up its melted and the rings are bent (no scratches on the cyl suprisingly!) what would cause that? i had it mixed at 15:1 while i was running it After new crank seals! and is Wiseco or OEM betteR?
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  2. 04-18-2007, 08:26 PM #2
    RedRider_AK's Avatar
    RedRider_AK
    RedRider_AK is offline Power User Teaching quads a lesson
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    What sort of 125 is this?
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  3. 04-18-2007, 08:30 PM #3
    team-red-rider's Avatar
    team-red-rider
    team-red-rider is offline I got banned by Ripping People Off Got the holeshot
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    Yamaha Tri-Moto 125
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  4. 04-18-2007, 08:56 PM #4
    RedRider_AK's Avatar
    RedRider_AK
    RedRider_AK is offline Power User Teaching quads a lesson
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    Which is a... two-stroke?
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  5. 04-18-2007, 09:42 PM #5
    team-red-rider's Avatar
    team-red-rider
    team-red-rider is offline I got banned by Ripping People Off Got the holeshot
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    yea a 2 stroke lol
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  6. 04-18-2007, 09:44 PM #6
    RedRider_AK's Avatar
    RedRider_AK
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    Might be overheating... Check if theres blowby on the piston skirts...
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  7. 04-18-2007, 09:48 PM #7
    team-red-rider's Avatar
    team-red-rider
    team-red-rider is offline I got banned by Ripping People Off Got the holeshot
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    nope the piston looks P-E-R-F-E-E-C-T except right by the exhaust
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  8. 04-19-2007, 02:04 AM #8
    RedRider_AK's Avatar
    RedRider_AK
    RedRider_AK is offline Power User Teaching quads a lesson
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    Maybe you had a lot of real bad preignition or detonation (you'd hear it, though). I have nothing to say really. Was the piston original stock?

    As for pistons, Wiseco is way better than OEM and it costs just the same or a little more.
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