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  1. #1
    pro785project towman1987's Avatar
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    Jul 2009
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    99 pro 785 first project (top end and exhaust)

    I have just bought someone elses problem. Its a99 pro 785 that i believe is all stock. I bought this ski already tore apart to the pistons it had two bolts broke off in the number 1 cylinder and have that fixed but i went ahead and pulled the other two cylinders due to about a mm of play between the last cylinder and piston i pulled the other two down.and i am going to post pics later on tonight of the pistons and cylinders im curious if the pistons will be salvageable and if i need to have the cylinders replated. I used a regular hone very lightly on the cylinders and there is no scars that i can see.


  2. #2
    SPEED KILLS, BUT YOU GET THERE QUICKER Keddano's Avatar
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    Jul 2007
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    Let's see the pictures.

  3. #3
    Click avatar for tech links/info, donation request K447's Avatar
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    Welcome

    Click below for the Polaris Service Manual.

    I think the 785 engine cylinders are Nicasil plated, which would mean they cannot be simply bored out, but also would need re-plating. Check the service manual.

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