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  1. #1

    Complete 1390 motor

    I HAVE A YAMAHA GP1200R BORE OUT TO A 1390CC ENGINE. PM ME FOR MORE DETAILS.

    1390 Big Bore motor done by Dan Lamey.
    (Weisco) Pistons were re-ringed and the cylinders were honed
    pro-tec refurbished crank was also installed
    R&D heads with new O-rings installed (with the girdle kit),


    cylinder number 3 lean out due to carbs .
    not sure what reeds are in there.(if i take a picture can you tell?)

    RIVA GAS VALVES SOLD!!



    i have eveything for the motor beside the carbs & riva gas valves. Asking $1299 or best offer plus shipping charges .i am doing a conversion and don't need this motor.

    i am located in new york for local pick-ups. i will not part out.

    i bought the ski with this motor from a member on this forum last year.
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    Last edited by DTHOMAS912; 07-19-2011 at 11:24 PM. Reason: MORE DETAILS


  2. #2
    All pm replied, keep the offers coming

  3. #3
    Moderator OsideBill's Avatar
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    From the pictures it looks like stock reeds, pull one out and post up a picture they may have aftermarket reed petals or something.

  4. #4
    TEAM BRONX TECH FAT BOY's Avatar
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    Pm sent.

  5. #5

    Join Date
    Jan 2010
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    queenz nyc
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    did it sell yet ??

  6. #6
    Quote Originally Posted by fat boy View Post
    pm sent.
    thanks for coming by.

  7. #7
    Quote Originally Posted by bossplayer5 View Post
    did it sell yet ??
    not the whole thing. Power valves are gone....

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