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Heater Core Pump And Manifold Placement

Discussion in 'Intermediate CJ-5/6/7/8' started by Allan, Jun 1, 2020.

  1. Allan

    Allan 74 Renegade

    Does anyone know which hose goes where? 493CA77F-D36C-4605-BB3C-8399E02156E8.jpeg
     
  2. timgr

    timgr We stand on the shoulders of giants. 2022 Sponsor

    What do you mean? One end goes to the fitting on the manifold and one to the water pump.
     
  3. Ol Fogie

    Ol Fogie 74 cj5 304, 1943 mb

    Are you asking if it matters witch direction the coolant flows thru the heater coil? Not absolutely sure but I don't think it matter either way.
     
  4. Allan

    Allan 74 Renegade

    Yes, does it matter weather or not the hose from water pump goes to the driver side or the passenger side of the heater core, I know dumb question but it is a Jeep?
     
  5. sterlclan

    sterlclan Member 2024 Sponsor 2022 Sponsor

    Air rises so witch ever is higher should bo on the outlet side of the core . I never paid attention and haven’t had any air.
     
  6. Allan

    Allan 74 Renegade

    So higher one to pump or manifold?
     
  7. Rubicloak

    Rubicloak Member 2024 Sponsor 2023 Sponsor 2022 Sponsor

    According to this... It would appear that the firewall side would go back to the rear of the manifold or the manifold side and the front to the water pump? My heater core is identical to the one in the parts catalog pic below.
    20190222_115439.jpg

    23931.jpeg
     
  8. sterlclan

    sterlclan Member 2024 Sponsor 2022 Sponsor

    I think water flows out of the pump into the heater core, if I think of it in the am I’ll feel hoses to see. I am old and kinda scattered
     
  9. Allan

    Allan 74 Renegade

    Lol, thanks
     
  10. TheBeav1955

    TheBeav1955 Member

    On my '72 the WP goes to the left connection look at it from the front and the right one goes to the manifold
     
    Allan likes this.