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  1. #1
    lxman88's Avatar
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    new 97 polaris pro 785

    i bought a pro today from robert off the sight for 200 bucks not a bad deal it dont run but its not missing anything its in fairly decent shape. my question is what should u look for on a pro? ive never had on or even much seen one till today he said it lost compression . he also had the head off no holed pistons and the cylinders look ok not to bad so maybe have them redone and new rings and pistons and see where were at after that. but what should i look for on a pro like what are they known for to go wrong so i can look into that and fixing it


  2. #2
    She likes the bike. But the ski gets her wet!!!! xlint89's Avatar
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    First make sure the crank spins freely. That is the most expensive part of these motors.

    Next is cylinder condition. If the cyl is damaged in any way, they need to be addressed differently.

    1. A damaged cyl needs to be repaired and re-Nicasil plated (around $200 a cyl)

    2. Cyl can be bored out and have a cast iron sleeve pressed into it (Sharps can do that for nearly the same cost as plating. HOWEVER, it will be much easier to replace with oversized pistons after that, should you ever need to replace the pistons again)

    How about posting up pics of what you have.

  3. #3
    lxman88's Avatar
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    ok i will take some tomorrow ima take the motor apart and take all the old fuel lines out and stuff and clean everything good and post some pics its raing here today or ida been wrenching already haha

  4. #4
    bowsniper's Avatar
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    Congrats,, Bob who? Lugs?

  5. #5

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    looks like it has 2 redone cylinders already ,post some pics with the head off

  7. #7
    rlharrison60's Avatar
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    That would be me,
    Quote Originally Posted by bowsniper View Post
    Congrats,, Bob who? Lugs?

  8. #8
    lxman88's Avatar
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    thanks agin robert for the killer deal. and also he was nice enough to give my buddy who came to help me load it a set of rims and tires for his chevy pick up truck. ill take pics of it with the head off here in a few hours and we can start to try to get this pro back to life. im think ima build the pro befor i build the triple piped sl build i was wanting to build out of the 650 so the 650 sl 780 conversion will go on hold till the pro comes to life

  9. #9
    casey67's Avatar
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    Quote Originally Posted by lxman88 View Post
    im think ima build the pro befor i build the triple piped sl build i was wanting to build out of the 650 so the 650 sl 780 conversion will go on hold till the pro comes to life
    When you get the Pro running, You're ganna say what 650 ? I bet you'll be looking for more Pro785 stuff or 1200 tripple stuff.

  10. #10
    bowsniper's Avatar
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