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  • Header Tank

    Ahoy ! Me again !
    Fitting overflow/header tank and find I have two connections, one of which I am happy goes to the header/tee tank but not sure where the other goes ?
    Suspect either another outlet on induction manifold or a tee into the heater elbows ? Free beer !

  • #2
    Re: Header Tank

    Hi,
    Can you post up a photo of your header tank so we can see where the outlets are. What engine is it for? I have a Rover V8 and use an SD1 header tank. My header has a bottom feed to the engine and a top outlet that is above the pressure cap seal, so as to take any expelled water away to the ground. Hope this helps. Regards Mike

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    • #3
      Re: Header Tank

      Different engines will have different plumbing.
      Typically, a flat cap with no pressure relief is fitted to the radiator. A pipe is fitted to the overflow on the radiator and connects to the header tank, which should have it's own separate overflow. A normal rad cap with pressure relief should be fitted here. A larger pipe should be connected to the bottom of the header tank and plumbed in to the rest of the cooling system. This should be at a point that will promote circulation through the header tank, to help with separating air from the coolant. The overflow from the header just runs to ground.
      Last edited by scott h; 16-11-21, 11:28 PM.

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      • #4
        Re: Header Tank

        Funny how when you sleep on it the penny drops ? The connection for the pipe from the tank to the radiator cap is above the pressure cap so it is a spill off and he spare pipe on the catch tank is simply the overflow which should point down behind the engine.
        Thanks for replies !

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