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  1. #1
    Nuckin Futs TwzteD's Avatar
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    Stages 1-2-3 Hp?

    I saw the video on youtube of the SVHO making 375hp on stage 2, so it got me wondering I plan on only doing a stage 1 plus on my gp1800 so I was curious about what hp are they making on that stage? I am wondering because obviously the svho is only tuned to about 260 hp from the factory and the RXP 300 is about 300 kawi is 310... Just wanted to give a ball park hp number if some one asks. Im guessing its over 300? Is it safe to say stage 3 is over 400 hp? im sure someone has tested it before.




  2. #2
    Site Admin Green Hulk's Avatar
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    HP is pretty irrelevant and is a very small piece of the puzzle when it comes to jetskis. If you want to impress your friends tell them over 300 HP
    Horsepower is 1/3 of the equation
    Hull efficiency is another 1/3
    and pump efficiency another 1/3

    You will find that the Yamaha skis excel in hull and pump efficiency which enables them to go faster than other skis who claim more HP


  3. #3
    Like a chimp with a ball-peen hammer smackwave's Avatar
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    Quote Originally Posted by Green Hulk View Post
    HP is pretty irrelevant and is a very small piece of the puzzle when it comes to jetskis. If you want to impress your friends tell them over 300 HP
    Horsepower is 1/3 of the equation
    Hull efficiency is another 1/3
    and pump efficiency another 1/3

    You will find that the Yamaha skis excel in hull and pump efficiency which enables them to go faster than other skis who claim more HP
    Agreed 100%. Plus, I'm sure that's an extremely aggressive tune and unrealistic RPMs for the stage 2 kit as sold. However, if you really want to fudge then RPM numbers look at the HP/torque chart in the video at 32s and slide down to the RPMs you'll be running. According to that chart, with the same tune you'd be running about 325HP at the Riva 8100RPM max, and in the 350HP range if you depitch and run 8500 RPMs.

    But those numbers and $2.10 will get you a coffee at Dunkin.

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  5. #4
    Nuckin Futs TwzteD's Avatar
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    I will be happy with 300 lol or i can always say 260 and if i race a 300+ ski they may want to get rid of it lol

  6. #5
    Click avatar for tech links/info K447's Avatar
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    Quote Originally Posted by TwzteD View Post
    ... HP ... the RXP 300 is about 300 kawi is 310...
    Do not assume the numbers printed on the hull decals are the exact real world stock engine configuration output power.

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  8. #6
    95.4mph FZR FZeeR's Avatar
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    This is why I took my FZR 350 decals off my ski...turning 9100rpm on 19lb wheel I think I was a bit low lol

  9. #7
    fx160's Avatar
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    Quote Originally Posted by TwzteD View Post
    I will be happy with 300 lol or i can always say 260 and if i race a 300+ ski they may want to get rid of it lol
    I still remember the look on a mates face that rode a 260 hp Seadoo
    When I was running about 5 mph faster than him on my 2010 fzs
    He asked me how much hp I had
    I replied about 209
    Priceless

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