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Discussion in 'Defender 90 / 110 / 130' started by flatlander, Jun 9, 2018.

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  1. flatlander

    flatlander It's not broken! Donater

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    P1020876.JPG Does anybody know what this thread is? It's on the radiator fill / balance pipe, coming from the header tank. The rad is from a Disco, and none of my various pipe fittings fits. The local plumber shop can't help either. It seems not to be BSP. I need to fit a new bit of tube, but don't want to upset anything until I know I can get a replacement if needed.
     

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  2. jamesmartin

    jamesmartin Well-Known Member

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    id need a better description
     
  3. TorsionBhudda

    TorsionBhudda Well-Known Member

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    NPT possibly
     
  4. jamesmartin

    jamesmartin Well-Known Member

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    never seen that set up on a rad,
     
  5. flatlander

    flatlander It's not broken! Donater

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    The second pic shows where it comes from. The OD is 12mm, and the thread pitch is (as far as I can see) one thread per mm. My local hydraulic shop is open on Monday, so I can take it in there to see if they can help. P1020877.JPG
     
  6. jamesmartin

    jamesmartin Well-Known Member

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    its not the rad thread then but the pipe union,what spanner size is the fitting
     
  7. Mingus

    Mingus Active Member

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    looks like a brake pipe with a flared union.
     
    Hicap phill likes this.
  8. Jam1

    Jam1 Well-Known Member

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    Am I missing something? Why not just reuse that fitting with a new pipe?
     
  9. flatlander

    flatlander It's not broken! Donater

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    Sorry James, my first post wasn't clear. A 14mm spanner fits the nut.
     
  10. flatlander

    flatlander It's not broken! Donater

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    The pipe shows signs of having been brazed while in place. If I bugg3r the fitting removing the pipe I want a fighting chance of replacing it.
     
  11. Oldseadog

    Oldseadog Well-Known Member

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    14mm could possibly be 9/16" which could make the fitting an old-style 1/4 clutch pipe male end with an olive fitted.
    The pipe is easily available as are the ends. However, I would beg or borrow a flaring tool to make off the end rather than fit an olive.
     
  12. tottot

    tottot Well-Known Member

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    What ever it is it is not standard.What does it do?
     
  13. flatlander

    flatlander It's not broken! Donater

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    The larger thread is 1/2"BSP, so tomorrow I will be drilling and tapping the brass adaptor to BSP, which means I will be able to use a 90 degree bend and hose adaptor I have to hand. Problem solved, thanks to everyone who responded.
     
  14. flatlander

    flatlander It's not broken! Donater

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    It joins the rad balance tank, permitting coolant to flow between the header / balance tank and radiator.
     
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