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  1. #21
    resident guru slag's Avatar
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    Re: Real tuning specs Factory Wet Pipe -750

    good question. the guide over at sbtontheweb only goes to 440. here is what they have

    440 - Low Speed 1
    High Speed 5/8

    p.s. you should make your own thread and post there. This is about factory pipe carb settings.

  2. #22
    I dream skis
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    Re: Real tuning specs Factory Wet Pipe -750

    Just tuned up the ski. I need a little more snap off the bottom and I will be satisfied.

    Location Buffalo, NY -

    1992 750 sx small pin
    Factory wet pipe settings: top 3/4 turn out
    Middle closed
    Bottom 1/8 open
    44mm black jack settings: Main jet - 165 @ 2 5/8 turn out
    Pilot jet - 120 @ 3/4 turn out
    Peak rpm 6950 - 6990 very steady
    Pop off was 20 psi , i raised it a bit by elongating the spring a touch with a gentle stretch. I have yet to check it with the gauge.

    Dual cooling oem to manifold and new/2nd line top fed into the pipe.
    FCV set at stock i believe it comes at 3.5 psi. I may try raising that to 5 psi. 4mm restrictor between the FCV and stinger pipe.

    compression front is 181 and rear is 179 psi.

    82.00mm wiseco pro-lites
    skat trak 9/17 standard
    blowsion freestyle pump cone
    top loader intake grate
    R&D flat ride plate
    Factory pipe water box

    I had trouble tunning and removed the vilder flywheel and replaced it with the stock one. I may try using the vilder again to see if I can get more of a touchy throttle.

    Any suggestions would be great, Thanks

  3. #23
    PWCToday Regular Mr. Gizzard III's Avatar
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    Re: Real tuning specs Factory Wet Pipe -750

    Anyone running the 88 low jet, 155 high jet that Factory Pipe recommends with the wet pipe and having success? I am having trouble getting the low-end dialed in. They recommend 5/8 out on the low, but the ski isn't getting enough fuel at that setting. I currently have it at about 1 full turn out. It's sluggish out of the hole for about 1-2 seconds, then it hits and about pulls your arms out of the sockets. Other than the low end, the throttle response is great.
    89 Kawi 550
    93 Kawi 750sx
    01 Kawi zxi1100 Couch

  4. #24
    I dream skis
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    Re: Real tuning specs Factory Wet Pipe -750

    You might want to try a FCV to clean up the low end.

    Try opening the low screw to 1.5 turns and see what happens. Always safer to go rich than lean.

    Single carb setup? Stock?

  5. #25
    PWCToday Regular Mr. Gizzard III's Avatar
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    Re: Real tuning specs Factory Wet Pipe -750

    Ya it's the single Keihin carb. What do you mean by FCV? 88 is a pretty fat jet, so the way the ski is reacting is leading me to believe that there is too much fuel on the low end. I am using the stock spring, needle seat. I think opening up to 1.5 will bog it down more.
    89 Kawi 550
    93 Kawi 750sx
    01 Kawi zxi1100 Couch

  6. #26
    I dream skis
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    Re: Real tuning specs Factory Wet Pipe -750

    I just got my carb to a decent point this weekend. I feel your pain. I tried everything before changing jets. Screw in / out kept track on paper how it handled. Then change jets. It only takes one time of the old"why did I not try closing the screw on that last jet" then your replacing the jet with the last. I was very systematic in my approach, trying lean and rich conditions first then see what worked. After that small 1/8 turns to see just where it was. I wish I had a larger main becuase 2 5/8 out is way too much. I tuned my low end by turning the high screw to 1/4 out and only running 50-100 feet to see how the low jet/screw mix was performing. Then open the high screw to what worked great for top end.

  7. #27
    I dream skis
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    Re: Real tuning specs Factory Wet Pipe -750

    Sorry FCV is a Flow Control valve. It dries the waterbox out during low throttle rides. Supposed to give the throttle a bit more snap.

  8. #28
    PWCToday Regular Mr. Gizzard III's Avatar
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    Re: Real tuning specs Factory Wet Pipe -750

    I was thinking about putting the flow control valve in. Thanks for the input. Hopefully others will post their jetting specs and conditions on this thread. No two carbs are a like, but getting a close starting point really helps.
    89 Kawi 550
    93 Kawi 750sx
    01 Kawi zxi1100 Couch

  9. #29
    Attention ***** PWCToday.com Is My Home Away From Home JonnyX2's Avatar
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    Re: Real tuning specs Factory Wet Pipe -750

    River Rat my bad I thought you had dual carbs when I suggested 80 pilot!
    Quote Originally Posted by Firebird A/C&Heating View Post
    OMG.....Rules for 550 vintage ski class...550 ski riders do not conform to any kind of rules. That is why you are riding a 550 ski in the first place. Rules suck....
    PS...the rule book will be in my 550 pump
    Quote Originally Posted by WB1994
    Listen , stop your cryin' , its only an X2.

  10. #30
    resident guru jfw432's Avatar
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    Re: Real tuning specs Factory Wet Pipe -750

    Quote Originally Posted by Mr. Gizzard III
    Ya it's the single Keihin carb. What do you mean by FCV? 88 is a pretty fat jet, so the way the ski is reacting is leading me to believe that there is too much fuel on the low end. I am using the stock spring, needle seat. I think opening up to 1.5 will bog it down more.
    I ended up using an 85 jet in my ski at about 1.5 turns out and it works great. I can idle it for 20-30 seconds and it'll still snap with little to no hesitation if I juice it.
    Last edited by jfw432; 08-25-2008 at 07:00 PM.

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