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  1. #1
    smacota1's Avatar
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    Riva Nozzle Question

    Riva Nozzle Question
    I had a Riva nozzle sitting on a shelf for a couple of years. I know the last WV it was on was a '98 GP1200. Just for giggles, iI wanted to see if it would bolt up to my 04 GP1390 as it still has the plastic nozzle.

    Well, it fits okay, turns okay and seems to function as it should. Hopefully I will get a chance to try it out tomorrow.

    I have tried to search the Riva part # RY2318 but nothing comes up. Riva has a GPR nozzle but the it is RY2320.

    I measured the nozzle and it measures about 93MM inside the nozzle.

    If someone thinks I should take it off and not use, let me know as I do not like to take chances. Too old and takes too long to heal.

    Thanks for any input.......
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  2. #2
    WATER WOODY's Avatar
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    Not sure how safe it is to run it. Does it funtion properly? You might test it a low speeds. What prop are you running? Your steering nozzle shouldnt be any bigger than 5mm over your exit nozzle. Be careful....

    I can tell you one thing, i bet that ski turns on a dime with it on...

  3. #3
    krispaintballz's Avatar
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    I have a couple of those quick nozzles. They are for the gp 155mm pump but can be used on yours too. I would be careful though. They are not made well(cheap casting material) and they do crack. I would just play it safe and get an all metal steering nozzle(sho).

  4. #4
    L Carlson's Avatar
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    Buy a SHO metal nozzle you can get one cheap and bore it out to round. I'm not sure what size the 1390 guys use. Best bet John Be safe not sorry! Lee

  5. #5

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    Talked with Skat-Trak techs a few years aga about the relationship between the venturi exit diameter and the swing bucket exit diameter. Their recomendation was about a 3mm difference between the two as I recall. For instance an 87mm venturi would run best with a 90mm swing bucket.

    Their reasoning was that if the difference were to be increased, say to 5mm, then the turning was a bit sloppy, especially at lower speeds, and was difficult to turn at high speeds when the difference was to tight (for example a 1mm difference).

    I use the skat trak venturi system and follow their recommendations.... no issues.

    Something to consider.

  6. #6
    smacota1's Avatar
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    Taking it off!!!!!

    Okay guys, nozzle is coming off. Too many unknowns and I prefer safer than stupid.

    Thanks for the input.

  7. #7
    WATER WOODY's Avatar
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    Quote Originally Posted by smacota1 View Post
    Okay guys, nozzle is coming off. Too many unknowns and I prefer safer than stupid.

    Thanks for the input.
    Good choice! Very interesting that it fits though, thanks for sharing that info.

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