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  1. #1

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    closed vs open loop cooling system

    hey i have a quick ( and prolly dumb ) simple question..

    whats the difference bewteen the open loop and closed loop cooling system sea doo has on their rxp


  2. #2
    R.I.P. 11's Avatar
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    If lake or sea water was perfectly clean then open loop would be ideal, infinite amount of coolant, SIMPLE, reliable.

    Downside is cooling system's temperature is harder to regulate and it can get clogged up.

    I like open loop better.

  3. #3
    Senior Member watermedic's Avatar
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    Open loop cooling is when water from the lake, ocean, river you're riding in is pumped through the cooling passages of your engine and then expelled.
    The closed loop cooling on the RXP is made up of a coolant tank and a heat exchanger. The coolant circulates through the engines cooling passages and then travels to the heat exchanger/ride plate. The coolant is cooled by the cooler temps of the water you are riding in via the heat exchanger. The RXP does use the lake water to cool the exhaust and intercooler.

  4. #4
    way2fast's Avatar
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    With closed loop cooling you never have to worry about taking in foreign matter and possibly clogging up the internal water passageways in your block. Also there is no internal corrosion because the anti freeze used to circulate and cool has rust/corrosion preventative properties in it. Closed loop is the hands down winner especially if you run in salt water.

    Richard

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  6. #5
    Moderator RX951's Avatar
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    closed or open

  7. #6
    Avion3333's Avatar
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    Quote Originally Posted by RX951 View Post
    closed or open
    OPEN all the way

  8. #7

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    I've taken apart TOO MANY engines with corrosion or seaweed-packed water passages. That's not what I want in MY fuel-injected, turbocharged 4-stroke.

    CLOSED ALL THE WAY!

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  10. #8
    Cutter's Avatar
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    If you run open I strongly suggest putting in a Groco Sea Strainer. Its got a fine mesh filter and will catch most debrie.

  11. #9
    how do you change it to open loop cooling ??

  12. #10
    AtoMIC_OraNGE greenbullet's Avatar
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    Strainers blow engines. A strainer will clogged way before the engine passages and fast

    i personally don't run one and have been fine but depends on water too

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