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  1. #1
    kensmith's Avatar
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    polaris slx 780 is ready for psi triples

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    Well guys its time to pull the seized SLX 780 out & rebuild, its time for the Psi triples ported jugs, v force 2 reeds, hot seat CDI, jetnetics aluminium flywheel, Wiseco forged pistons , hot rods rods, rebuild true & weld crank , 97' 785 carbs & intake. Any help or suggestions will be appreciated. I already have all the parts so buying a 785 is out.


  2. #2
    kensmith's Avatar
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    Sexy aren't they !?

  3. #3
    Bing-A-Ding-Ding-Ding, Brrrrrap! Brrrrrrrrrap!!! Polaris_Nut#1's Avatar
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    Very Sexy! I'll be watching this one as I have always wanted to do this also. Far as I got was collecting a 785 trim motor, intake manifold and igntion coils. Damn Hurricane took over my spare tinker time. Guess it's time to start collecting stock for the basement.

  4. #4
    She likes the bike. But the ski gets her wet!!!! xlint89's Avatar
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    Looks nice. You're off to a good start so far.

    Who did the cyl porting?

    What Hot Seat CDI do you have? (If I remember correctly, Randy liked the 97 785 CDI timing curve for the other Fuji engine "conversions)

    Is the Jetitnetics flywheel NEW? (there's a "break in" procedure if so) Post #24 http://www.greenhulk.net/forums/show...t=15460&page=3

    Be aware that some guys feel it's necessary to allow slightly more piston to cyl clearances than what Wiseco recommends. However, I also think they may have changed the way they are made lately to combat the cold seizure problem they were know to have. I bought a new piston to replace the one I had "cold seize" and it was heavier than the other 2 I had installed. I think they left more material on the piston to help slow the expansion rate. (that's just my guess)

    Good luck with the build.

  5. #5
    kensmith's Avatar
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    Quote Originally Posted by xlint89 View Post
    Looks nice. You're off to a good start so far.

    Who did the cyl porting?

    What Hot Seat CDI do you have? (If I remember correctly, Randy liked the 97 785 CDI timing curve for the other Fuji engine "conversions)

    Is the Jetitnetics flywheel NEW? (there's a "break in" procedure if so) Post #24 http://www.greenhulk.net/forums/show...t=15460&page=3

    Be aware that some guys feel it's necessary to allow slightly more piston to cyl clearances than what Wiseco recommends. However, I also think they may have changed the way they are made lately to combat the cold seizure proble
    m they were know to have. I bought a new piston to replace the one I had "cold seize" and it was heavier than the other 2 I had installed. I think they left more material on the piston to help slow the expansion rate. (that's just my guess)

    Good luck with the build.
    Yes the Jetnetics flywheel is new, but its still being shipped with the Hot seat CDI, I figured would be better than the 785 CDI which is what I have in there now Hot seat was for the 780 with tripples, 785 has a different stroke so I think it would be better correct me if I'm wrong.
    As far as the Wiseco piston's I'm going to try the clearance that they recommend, I always warm my motors up good, I have them in my stand up never had any issues so hopefully none will start now.

  6. #6
    kensmith's Avatar
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    I had to see what they would look like.
    They will look nice with a new paint job or polished.
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  7. #7
    kensmith's Avatar
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    Mag piston look like it was trying to burn a hole through it.

  8. #8
    kensmith's Avatar
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  9. #9
    kensmith's Avatar
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    Today's progress.

  10. #10
    Bing-A-Ding-Ding-Ding, Brrrrrap! Brrrrrrrrrap!!! Polaris_Nut#1's Avatar
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    Looking good! What did you use on your rub rails? Is that Hammer paint?

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