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  1. #1
    Roll Tide!! SeadooTech's Avatar
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    Open loop restrictor

    What are you guys using to restrict water flow and where do you have it installed, also how do you route all the water lines, the newest way, I know there has been more than one way just what is the safest so I don't blow the oil cooler thanks


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    Autosport's Avatar
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    This is the cooling I am running, don't have an issue. the Yellow thing is a thermostat.

    Make sure you have a large hose on the exit of the cooler, that is the key.
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  3. #3
    Roll Tide!! SeadooTech's Avatar
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    What connects to the plate besides the air bleed

  4. #4
    RXP 260 X Short Course Veteran RXP244's Avatar
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    Quote Originally Posted by SeadooTech View Post
    What connects to the plate besides the air bleed
    Nothing else with this set up. The engine really needs no more supply than 3/8 or about 10mm. This is if you are running a thermo off the top of the head. There is very little almost no pressure going through the oil cooler if you feed it with water from the thermostat. And its already hot to keep the oil temp up. Just don't restrict its exit from the cooler. Run a 3/4 hose to exit if you can.

    If you are running a J-Pipe exhaust you could run water off the top of the J-Pipe to the oil cooler. Just restrict it into the oil cooler down to about 4mm and then run it out to a rear pisser from the cooler.

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    Roll Tide!! SeadooTech's Avatar
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    so the motor is getting enough water through the 3/8 air bleed, im using a thermo and 08 exhasut, i've noticed some guys running large hose from the open loop plate, how does there system work? thanks

  6. #6
    RXP 260 X Short Course Veteran RXP244's Avatar
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    Quote Originally Posted by SeadooTech View Post
    so the motor is getting enough water through the 3/8 air bleed, im using a thermo and 08 exhasut, i've noticed some guys running large hose from the open loop plate, how does there system work? thanks
    Unless those guys have a restrictor inside the hose somehow, they will be putting to much water into the engine at speed. You only need as much water to replace what the thermo is dumping out. The water has to stay in the engine long enough to heat up and being forced out early by new cold water entering to quickly will never allow the engine to reach correct operating temps. Think of the thermo as nothing more than a controlled bleed. It will always let the hot water out.

  7. #7
    RXP 260 X Short Course Veteran RXP244's Avatar
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    Remember that its only the hull that is Yamaha. The engine is Seadoo, so just run your cooling system the same as one would for the Seadoo. Follow Rivas open loop cooling instructions for the later exhaust system. Find the instructions on Rivas site.

    Just make sure you have plenty of water supply through the Yammy pump if thats what you are using. Add more water lines in if needed.

  8. #8
    Autosport's Avatar
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    Yamaha HO pump lows more water than the SD pump into the hull

  9. #9
    RXP 260 X Short Course Veteran RXP244's Avatar
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    Quote Originally Posted by Autosport View Post
    Yamaha HO pump lows more water than the SD pump into the hull
    It might do. Or should I say Doo. But if he's using a standard 1200/1300 pump he might have to add another pick up off the strainer.

  10. #10
    Roll Tide!! SeadooTech's Avatar
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    I'm running the sd pump, another hose off the strainer to where, oh for the yami pump

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