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  1. #1

    Bad Motor Ultra 250x, Need Advice

    Anyone know if I can put an STX-15F Block in my Ultra 250x? I broke a rod and need a new short block. Any ideas? Im having trouble finding engine parts & rebuilds for the 250x Thanks --Jim


  2. #2
    My name is Sean and I am addicted to STXs smokeysevin's Avatar
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    not exactly the head, the cylinders are different

    the crank and the rods are the same though

    Sean

  3. #3
    www.eastcoastpwc.net Scott's Avatar
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    jesus! another rod failure? Any warranty?

  4. #4
    Fat Man, Little Boat Region8Ultra250X's Avatar
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    any takers on what the odds the pump was recently replaced or is trashed as well?

  5. #5
    2005 RXT Red08Ultra250's Avatar
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    Quote Originally Posted by jimmyrz View Post
    Anyone know if I can put an STX-15F Block in my Ultra 250x? I broke a rod and need a new short block. Any ideas? Im having trouble finding engine parts & rebuilds for the 250x Thanks --Jim

    Must be everyone with the name Jim thats having problems this month.

    see my post under catstrophic motor failure.

    seems you basically have to build it piece by piece, since they dont offer a short block.

    Can you give some more details as to what happened, etc?

  6. #6
    dawson's Avatar
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    Quote Originally Posted by smokeysevin View Post
    not exactly the head, the cylinders are different

    the crank and the rods are the same though

    Sean
    cranks are not the same timing chain pitch depending on year model and the diameter where the trigger disk fits is 0.5mm larger on the 15f crank

    but hey i am just a yammy boy

  7. #7
    My name is Sean and I am addicted to STXs smokeysevin's Avatar
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    oh shit, thats right, thank you Silent D i forgot they changed the timing chain out to the bigger one

    slipped my mind

    Sean

  8. #8
    Rocket Power !!! Spin21's Avatar
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    Quote Originally Posted by smokeysevin View Post
    oh shit, thats right, thank you Silent D i forgot they changed the timing chain out to the bigger one

    slipped my mind

    Sean
    Can you give some more details as to what happened, etc?

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