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  1. #1
    skigolfnut's Avatar
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    Another Pro785 water routing question

    I have been looking at a lot of past post on the water routing diagrams from everyone,
    (thanks everyone)
    Does one work better over the other?
    Did the 98 pro have any jetworks valves installed from the factory?
    I have dug all over and don't see a one,
    On my 97-785 do I need to change the tubing size for the Letter "D" tubing in Randy's drawing going to each pipe?
    Does it matter one way or the other to do the intake water routing from tapping into the end of the water manifold or just "T" it off of the water inlet from pump?
    thanks,


  2. #2
    thester71's Avatar
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    I am following the watcon routing on my 99 pro, I tapped the manifold instead of using a tee, I didn't want to disturb the water flow before the manifold.

  3. #3
    skigolfnut's Avatar
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    Do I have to change the size of the hoses?
    And does anyone ever sell used Jetworks valves?

  4. #4
    Hayabusa's Avatar
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    If I remember correctly, Polaris didn't use Jetworks valves on the the PRO until 1999.

    You can find Jetworks valves on ebay.

  5. #5
    thester71's Avatar
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    You should already have brass restrictors in your lines to each stinger, I have a set of 97 pipes and it is already set up for watcon routing, it uses a little brass manifold where "D" is in watcon pic, the manifold has 1 line in from the end of the water manifold, and 3 lines out(1 for each pipe), with a .090" restrictor in each line.



    As far as the jetworks valve, I bought 1 pro series to go between the main water manifold and this little brass one for the stingers, I would not buy a used valve as there only $50 new.
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  6. #6

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    no need to change the lines it's real important to install the jetwork valve and yes the 97 has has the restrictors from the factory

  7. #7
    skigolfnut's Avatar
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    For short term can I use it untill I install the jetworks valve?
    after I re-do the routing,

  8. #8
    thester71's Avatar
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    Quote Originally Posted by skigolfnut View Post
    For short term can I use it untill I install the jetworks valve?
    after I re-do the routing,
    I wouldn't, too much money to rebuild these motors, you don't want to risk it over a $40-$50 part.

  9. #9

  10. #10
    Click avatar for tech links/info, donation request K447's Avatar
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    Reminder - If I recall correctly, the rubber ball inside the early Jetworks flow control valves had a tendency to get stuck closed after they aged some.

    If stuck shut they will restrict water flow, creating an under-cooled exhaust system.

    It is important, even with a newer Jetworks valve, to check them each season for proper operation.

    Installing a Flow Control Valve


    How a Jetworks valve works

    ph2ocraft; I have them on every one of my boats.



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