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Thread: Riva Stage 4

  1. #1
    WickedXP's Avatar
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    Riva Stage 4

    My friend Steve at Precision Water Sports has a client in Boston who just picked up the Riva Stage 4 kit and is having him do the install on his '13 PX. The client apparently has deep pockets and bought the $7k kit and some "extras." Riva says the 4 will do 80-81 I believe but I was thinking.. Couldn't you do better than 80mph with $7G's? Anyone currently running the full RRS4?


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    RGUN's Avatar
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    This one has been for sale for a long time here in Ontario. http://www.kijiji.ca/v-personal-wate...ationFlag=true

    installation must have been one hell of an expense for them to claim $35,000 invested. Claims it's good for 83mph.

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    I think you could do better but not by much especially on the T3 hull.

    TS your mods are the best bang for the buck. You can hit that 74-75MPH GPS area pretty solid. Every 1-2MPH after that you pay big for on the T3 hull.

    I have a hard time understanding why some people throw literally 5, 6, 7K++++ into some skis to achieve 80MPH+. I can see it if your dragging the ski, but not for recreational use. A solid 75MPH ski will beat 98% the skis you'd ever come across. Beyond that threshold you spend a ton of money and spend a lot of time wrenching for really nothing more than maybe beating that 2%. I can get behind spending 2K-3K on upgrades but spending as much as 80% of what your ski is worth, I don't know about that. It's a hard pill to swallow even if you got the money to burn.

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    Quote Originally Posted by skylolow View Post
    I have a hard time understanding why some people throw literally 5, 6, 7K++++ into some skis to achieve 80MPH+. I can see it if your dragging the ski, but not for recreational use. A solid 75MPH ski will beat 98% the skis you'd ever come across. Beyond that threshold you spend a ton of money and spend a lot of time wrenching for really nothing more than maybe beating that 2%. I can get behind spending 2K-3K on upgrades but spending as much as 80% of what your ski is worth, I don't know about that. It's a hard pill to swallow even if you got the money to burn.
    Its mostly a sickness..some can afford it some can't..to each his own.


    fyi I had exactly riva stage 4 and barely got to 80 on a cold day with low fuel. mostly it was a 76-77mph ski. people have gone faster for much cheaper.

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    MPower's Avatar
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    Chances are slim he will hit those speeds.

    I just built an R&D Stage 4. Kits are pretty close with exception of the R&D having a lot of parts for handling and retaining the closed loop cooling. RIVA kit doesn't include the handling goodies and moves to an open loop kit which allows for the use of their rideplate (which will add speed for sure).

    My first run out with the R&D in hot and humid as hell NC heat I was running 75-76. I played with some stuff and repitched the prop to get my RPMs up and now in the same heat the ski is running 77.5-78.5 at 8800 RPM and 16.2 pounds of boost. It's a beast for sure. I will play with the nozzles and extended pump cone and expect more speed there, maybe 80.

    To me the RIVA rideplate or adding any angle to plate is out of the question. It goes against what this ski is about. 16 pounds of boost and 8800 RPM in this T3 hull is insanely fun. An absolute rocket in and out of the turns. I can't imagine 20+ pounds of boost.

    Best part about this "slow" RXPX is that it gave an 85+ mph FZR all it wanted. Because it is a 77+ mph ski locked down in rough water.

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    Quote Originally Posted by MPower View Post
    Chances are slim he will hit those speeds.


    Best part about this "slow" RXPX is that it gave an 85+ mph FZR all it wanted. Because it is a 77+ mph ski locked down in rough water.
    + 100

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    Mothman's Avatar
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    Quote Originally Posted by skylolow View Post
    I think you could do better but not by much especially on the T3 hull.

    TS your mods are the best bang for the buck. You can hit that 74-75MPH GPS area pretty solid. Every 1-2MPH after that you pay big for on the T3 hull.

    I have a hard time understanding why some people throw literally 5, 6, 7K++++ into some skis to achieve 80MPH+. I can see it if your dragging the ski, but not for recreational use. A solid 75MPH ski will beat 98% the skis you'd ever come across. Beyond that threshold you spend a ton of money and spend a lot of time wrenching for really nothing more than maybe beating that 2%. I can get behind spending 2K-3K on upgrades but spending as much as 80% of what your ski is worth, I don't know about that. It's a hard pill to swallow even if you got the money to burn.
    A hard pill to swallow? That's an interesting analogy. If so, imagine it's an 800lb Viagra. lol

  10. #8
    Nothin' better than Doo'in it! BigDaddyRXP's Avatar
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    A little more boost, a little more rpm, and paying close attention to all the details that make a big difference will put a P-X T3 at 80+ for way under a $7k "bolt on stage kit".

  11. #9
    GRF + DashPac:) seadoo02xp's Avatar
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    Quote Originally Posted by skylolow View Post
    I think you could do better but not by much especially on the T3 hull.

    TS your mods are the best bang for the buck. You can hit that 74-75MPH GPS area pretty solid. Every 1-2MPH after that you pay big for on the T3 hull.

    I have a hard time understanding why some people throw literally 5, 6, 7K++++ into some skis to achieve 80MPH+. I can see it if your dragging the ski, but not for recreational use. A solid 75MPH ski will beat 98% the skis you'd ever come across. Beyond that threshold you spend a ton of money and spend a lot of time wrenching for really nothing more than maybe beating that 2%. I can get behind spending 2K-3K on upgrades but spending as much as 80% of what your ski is worth, I don't know about that. It's a hard pill to swallow even if you got the money to burn.
    To each is own... I have a friend that spends tens of thousands on rc airplanes, another friend who has dumped way over 100k on a weekend drift car.

    It's a hobby.... Hobbys are expensive.

    As far as skis go ... Drop 20k to gain 20mph over bone stock and you are about right on target. It's better than booze and drugs if you ask me!!

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  13. #10

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    My stage 3 + cam goes 83 on the dash in this 104 heat index south Florida weather. It comes down to the stages are general results and if fined tuned and pitched to higher rpms, you can get more speed.

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