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Thread: Heater Y pipe

  1. #1
    Join Date
    Jul 2011
    Location
    Murrieta, CA
    Posts
    948

    Default Heater Y pipe

    I saw that a heater Y pipe helps to keep the heater temp up while idling. I have a factory installed heater but it cools off quickly while idling.

    Where does the Y pipe get installed and what does it connect to?

    Thanks!
    2010 Moomba XLV
    340hp cat
    Gravity 3, wake plate
    Rad-a-cage

    I have a love for ballast and large wakes.
    1100 v-drive lockers
    1180 under the playpen
    + lead and a collection of other ballast bags

  2. #2
    Join Date
    Jan 2008
    Location
    Keuka Lake, NY
    Posts
    5,760

    Default

    I believe it's between the raw water intake and the impeller housing.
    Couple pics in here. I never installed mine because it was too hard to get to at the time.

    http://www.moomba.com/msgboard/showt...Heater+install
    Last edited by jmvotto; 04-01-2012 at 06:47 AM.
    A Day at the Lake...Priceless
    A Day in Powder...Endless


    Joe V
    2012 Möbius XLV~ Loaded & Exiled
    2007 Outback V ~ sold

  3. #3
    Join Date
    Sep 2010
    Location
    Lake wallenpaupack PA
    Posts
    846

    Default

    I found it easiest to remove the water pick up hose between the vdrive and the impeller and install the wye outside the boat then slide it back in. I got a lsv and it was tight to install, skinned the knuckles then decided to pull the hose.

  4. #4
    Join Date
    Jul 2011
    Location
    Murrieta, CA
    Posts
    948

    Default

    I think I just figured out how it works.

    Am I correct that the Y on the intake line acts as the suction to pull the heat through the heater core? The hot water is still coming from the block.

    I was thinking backwards earlier and wondering how the cold sea water would hear anything.

    Thanks for the insight.
    2010 Moomba XLV
    340hp cat
    Gravity 3, wake plate
    Rad-a-cage

    I have a love for ballast and large wakes.
    1100 v-drive lockers
    1180 under the playpen
    + lead and a collection of other ballast bags

  5. #5
    Join Date
    Sep 2010
    Location
    Lake wallenpaupack PA
    Posts
    846

    Default

    Quote Originally Posted by Boonejeepin View Post
    I think I just figured out how it works.

    Am I correct that the Y on the intake line acts as the suction to pull the heat through the heater core? The hot water is still coming from the block.

    I was thinking backwards earlier and wondering how the cold sea water would hear anything.

    Thanks for the insight.
    Yep..............

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