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Oil Gauge Rear Fitting

Discussion in 'Flat Fender Tech' started by DanStew, Jul 28, 2022.

  1. Jul 28, 2022
    DanStew

    DanStew Preowned Merkin salesman Staff Member

    Lexington, South...
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    I am going to start installing my gauges for the flatty.
    This is a repop Omix gauge.
    Is the fitting on the back of the gauge an AN fitting?
    If not, do you have a name for the fitting so i can source some lines.

    Thanks!
     
  2. Jul 28, 2022
    jackdog

    jackdog Member

    Finger Lakes NY
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  3. Jul 28, 2022
    DanStew

    DanStew Preowned Merkin salesman Staff Member

    Lexington, South...
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  4. Jul 29, 2022
    Keys5a

    Keys5a Sponsor

    Florida Keys
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    Why not use the white nylon line that attaches with ferrels. Definitely not AN. You can also use a regular flare fitting if you want to stick with soft copper.
    -Donny
     
  5. Jul 29, 2022
    garage gnome

    garage gnome ECJ5 welder

    Western MA
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    It is a copper flare fitting, so it is the same as AN/JIC. It would be a small one.
     
  6. Jul 30, 2022
    Keys5a

    Keys5a Sponsor

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    Lets just call it a 37 degree SAE flare fitting. AN is military aircraft spec which is the reason for my response. Yes, they are both 37 degree, but the tighter thread tolerance of AN doesn’t always fit SAE fittings. Dan is likely looking for an 1/8 flare, unless his gauge accepts the ferrel barrel and nut.
    -Donny
     
  7. Jul 31, 2022
    duffer

    duffer Rodent Power

    Bozeman, MT
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    Soooo, is the flare fitting actually part of the gauge? Most have 1/8 npt threads on the gauge and then a fitting to adapt to the 1/8" flare line. If you have 1/8 npt, just get an AN3 or AN4 to 1/8 npt and run something that will both flex and that you will not likely have to mess with again. I have had better luck running the 1/8" copper than I have the nylon but both suck for longevity where you need a flexible connection. Nothing like a waterproofing job on your shoes while piloting a CJ-----------
     
  8. Jul 31, 2022
    Keys5a

    Keys5a Sponsor

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    Been there, done that. I had run a 1/4” copper line to my oil gauge, and a couple years later while driving, I felt my pants leg was wet and warm. I probably lost close to a quart before I knew what was happening. Lesson learned; never run a 1/4” line to an oil gauge!
    Dan, if we could get a photo of the back of the gauge you have, we wouldn’t be guessing. There are several configurations depending on the brand, application, and age of the gauge.
    -Donny
     
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  9. Jul 31, 2022
    garage gnome

    garage gnome ECJ5 welder

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    Been a while since I looked at a stock flat fender oil pressure gauge, but I think the flare fitting is part of it. The stock lines that feeds it is steel.
     
    Ol Fogie likes this.
  10. Jul 31, 2022
    DanStew

    DanStew Preowned Merkin salesman Staff Member

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    image3.jpeg
    so it is not a 37 degree fitting
     
  11. Jul 31, 2022
    DanStew

    DanStew Preowned Merkin salesman Staff Member

    Lexington, South...
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  12. Jul 31, 2022
    DanStew

    DanStew Preowned Merkin salesman Staff Member

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  13. Jul 31, 2022
    DanStew

    DanStew Preowned Merkin salesman Staff Member

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    so going through my fitting collection the only one that fits this thing is a flare fitting nut from my 57 land rover.
     
  14. Jul 31, 2022
    garage gnome

    garage gnome ECJ5 welder

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    Put a short pice of flared tubing, convert that to a pipe thread and then you should be good to go. I know it’s a lot of fittings back there.
     
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