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  1. #1

    Only hitting 70 with stage 1

    I have a yamaha fzs with stage 1 and a solas 13/22r. Also I have a vx ride plate and i done know why I hit 72 once then never again I only can get it to 70 mostly 69 I don't know what's wrong andni do have bounce at WOT. People said I can get up to around 73


  2. #2
    Just relax and enjoy the ride. XLT Chad's Avatar
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    Welcome to the forum Jason.
    Can you be more specific on what mods you have? Not all "stage 1s" are the same. Also, what RPMs are you at and are you reading those RPMs with the stock tach or an aftermarket tach. The more info that people have about your ski, the better they can help diagnose your problem.

  3. #3
    its a stage 1 by riva the manifold upgrade prop, free flow exhaust, pump seal kit, power filter kit riva intake grate, breather. and a vx plate just bolted on no shimming or anything.i dont have a tach on the stock gauge it shows a little bit past 7550 on really cold days it be around 7650.

  4. #4
    Just relax and enjoy the ride. XLT Chad's Avatar
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    I would start by shimming the back of the plate to smooth out the bouncing/ porpoising. Use stainless steel flat washers. start with one on each side in the rear. if it's still got a bounce, then use two. If you try to add to many, it's counter productive and you loose speed.
    Your RPMs sound about right. I think once you get that rideplate dialed-in, your speeds should go up for you.
    Also, are you using the stock speedo or a GPS? The stock one is not always accurate.

  5. #5
    i have a gps app on my iphone

  6. #6
    if the washers dont work on my top speed do u have any other sugestions on what to do?

  7. #7
    Just relax and enjoy the ride. XLT Chad's Avatar
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    Before I'd suggest doing anything like repitching or changing stuff, get your ski smoothed out so you can tell better where your speed and RPMs are really at. One other thought, how old are your plugs? Other than the top speed, the ski is running fine?

  8. #8
    Brand new plugs just got it tuned everything changed

  9. #9
    krenzema's Avatar
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    Check your Transom Plate to see if it is leaking...

  10. #10
    Just relax and enjoy the ride. XLT Chad's Avatar
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    Quote Originally Posted by krenzema View Post
    Check your Transom Plate to see if it is leaking...
    What?? He's not cavitating or taking on water, so what would checking the transom plate for leaking do??? I dont understand.

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