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  1. #1
    johnsonmtz's Avatar
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    '94 SLT750 Mild Power Mods

    This spring the '94 SLT750 is going under the knife for some minor tweaks to improve power.

    Currently the ski is stock with a few things:
    Ocean Pro F/A's
    TDR Water Box
    Triple outlet pump
    Chokes removed/fuel primer system

    Additions this spring will be:
    CarbonTech Pro 785 reeds
    Reed Stuffers
    Reed Spacers
    PSI Dry Pipe
    #120 Main jets (to fatten up for the dry pipe)
    Possibly a water filter as well

    The dry pipe has the 3/8" hose barb at the top for the air bypass. On wet pipes this feeds into the front section of the pipe to cool the exhaust. I think I'm going to route that through a pisser just to give me an indication of water flow. If nothing else, I may place the pisser in the rear to give a Yammie style water spout. No real functionality, but kinda fun.

    I know the dry pipe will kick up my top RPM so I have prop from an SL750 (5131079) and also a Polaris prop#5131092 to experiment for best performance. According to Casey67 the 092 prop is rated for 90+ HP, so I'm not sure I'll be able to turn that too well. I'm looking for a little improvement on the top end but mostly increase low end grunt for jumps and playing. Mainly I just want the prop to keep me off the rev limiter.

    When I put the skis to bed last fall I had great piston wash and pretty good performance. So, I have a good base to work from and monitor changes as I tweak the ski.

    I'll post up pics and progress when I get a chance to start working on the ski.

    KJ


  2. #2
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    Do you have the extended pump setup? That's always a sweet addition.

  3. #3
    johnsonmtz's Avatar
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    No pump mods in the pipeline at the moment. I've thought about it, but these are the parts I have in the garage ready to be installed. Actually, I kind of like the short pump because I can really spin out and whip around the back end of the ski. To some that's a negative, but this is my play ski so I want to keep that agility.

    KJ

  4. #4
    She likes the bike. But the ski gets her wet!!!! xlint89's Avatar
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    Then get the long pump!!!!


    When it sits out further, it makes the turn that much more immediate. Spin outs are easier to do with the long VS. short. (at least on the short pumped skis that had the long conversion I feel)

  5. #5
    johnsonmtz's Avatar
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    Quote Originally Posted by xlint89 View Post
    Then get the long pump!!!!


    When it sits out further, it makes the turn that much more immediate. Spin outs are easier to do with the long VS. short. (at least on the short pumped skis that had the long conversion I feel)
    Okay I'll bite. If I can find a great bargain on the pieces I'll give it a shot.

    Do I just need a wear ring, long drive shaft, and extensions for water tubes, steering, and reverse?

    KJ

  6. #6
    SPEED KILLS, BUT YOU GET THERE QUICKER Keddano's Avatar
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    And longer bolts....

  7. #7
    johnsonmtz's Avatar
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    Quote Originally Posted by Keddano View Post
    And longer bolts....
    What?!?!? Do you mean I can't just glue some threaded rod on the end of my OEM bolts and call it good?

    I meant to include that in the list.

    I guess the search is on! If I get an extended pump setup I'll probably want an extended ride plate as well. Finding one of those might be a bit of a bugger.

    I know some guys that do fantastic machine work and I have access to scraps of stainless steel. For a while I've kicked around the idea of having those guys use my OEM ride plate as a pattern and just fabricate an extended plate from that template. I'm thinking something like a 2" extension tapered in at about 20 degrees from the corners. How does that sound?

    KJ

  8. #8
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    I wonder if you could modify a Virage batwing plate to fit the SLT 750?

  9. #9
    BlueFishCrisis's Avatar
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    Quote Originally Posted by johnsonmtz View Post
    What?!?!? Do you mean I can't just glue some threaded rod on the end of my OEM bolts and call it good?

    I meant to include that in the list.

    I guess the search is on! If I get an extended pump setup I'll probably want an extended ride plate as well. Finding one of those might be a bit of a bugger.

    I know some guys that do fantastic machine work and I have access to scraps of stainless steel. For a while I've kicked around the idea of having those guys use my OEM ride plate as a pattern and just fabricate an extended plate from that template. I'm thinking something like a 2" extension tapered in at about 20 degrees from the corners. How does that sound?

    KJ
    I could get you a template of my extended plate if you want.....

    And you can go from there.....

  10. #10
    She likes the bike. But the ski gets her wet!!!! xlint89's Avatar
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    NEW Rend plates are still available if you can find one. I MIGHT know where one's at if interested...

    Long plate, long pump = more speed, better accel, and tighter turning ability.

    That =

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