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What size hose is this?

Discussion in '40- & 55-Series Tech' started by Mr. Toad, Aug 1, 2005.

  1. Mr. Toad

    Mr. Toad

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    My '75 2F has a hard coolant pipe mounted horizontally on the head on the passenger side just above the distributor. A soft hose goes from the back of the hard pipe to the heater inlet on the firewall. A standard 5/8" ID heater hose fits those fittings.

    The front of the hard line connects to the small metal inlet on the hose at the bottom of the radiator. 5/8" ID hose is too big, and 1/2" ID is too small. Does anyone know what size hose to use here? Or are these joints made of unobfittium?

    Thanks in advance,
    Shawn
     
  2. CruisinGA

    CruisinGA

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    Always used 5/8."
     
  3. Poser

    Poser Oh...Durka Durka Durka. s-Moderator Supporting Vendor

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    It is very possible that over the years, corrosion has caused enough material to be removed so that a 5/8" heater hose will not seal on it any loger....been there.


    Replace lower metal tube piece. Early trucks this was a fitting that could be replaced, later trucks, this was a one-piece affair...


    Good luck!


    -Steve
     
  4. Mr. Toad

    Mr. Toad

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    Sounds reasonable fellas. The lower fitting is replaceable. I'll give it a try. Thanks again.