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Thread: Oil Pressure Tube Fitting Sizes

  1. #1
    Champion Member theron's Avatar
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    Oil Pressure Tube Fitting Sizes

    1952 Champion. I'm having trouble working in an oil pressure switch along the oil pressure plumbing from the pump to the gauge. What size and spec is the fitting attached to the top of the (flat)head where the flexible hose is? It's smaller than 1/8". Any info is much appreciated. Just trying to get the old girl back on the road.
    1952 Green Studebaker Champion
    • manual
    • 6 cyl
    • no radio
    • owner since 4/11/17

    Pictured: PO (left) and me

  2. #2
    Golden Hawk Member rockne10's Avatar
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    Quote Originally Posted by theron View Post
    ... the fitting attached to the top of the (flat)head where the flexible hose is?
    Uncertain of your reference. Replacement hoses are available, both NOS and far superior stainless braided repops. Or are you looking for the fitting where the hose attaches to the copper hard line?
    "All attempts to 'rise above the issue' are simply an excuse to avoid it profitably." --Dick Gregory

    Brad Johnson, SDC since 1975, ASC since 1990
    Pine Grove Mills, Pa.
    '33 Rockne 10, '51 Commander Starlight, '53 Commander Starlight "Désirée"

  3. #3
    President Member bensherb's Avatar
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    On my '62 V8 it is STEEL hard line and the fitting on the head end of the rubber connecting hose is 1/8" pipe. The hard line end fitting is one I haven't seen used in decades and have no name for.

  4. #4
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    I sure remember them being 1/8 pipe. You must be retrofitting a cut out switch for a fan or electric fuel pump. It is much simpler just to pay attention to your oil pressure gauge and use a toggle switch to turn the pump on and off.
    If you car is ugly then it better be fast.....

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  5. #5
    Champion Member theron's Avatar
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    IMG_20180710_172745.jpgThis is the fitting I'm having trouble finding the size of. It's smaller than 1/8" NPT and bigger than 1/16". The end that attaches to the pump IS 1/8" inverted flare.
    Last edited by theron; 07-11-2018 at 02:53 PM.
    1952 Green Studebaker Champion
    • manual
    • 6 cyl
    • no radio
    • owner since 4/11/17

    Pictured: PO (left) and me

  6. #6
    Champion Member theron's Avatar
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    Here's kind of a "measure twice" scenario. I thought the fittings you suggested were incorrect because I wasn't trying the fittings you suggested. Went back and made sure I used proper thread and size and it fit perfectly.

    One of the most enjoyable yet frustrating parts of driving a Studebaker is how much I've been learning. I'd say another great thing is the community. Thanks for the help and beautiful cars, by the way.
    1952 Green Studebaker Champion
    • manual
    • 6 cyl
    • no radio
    • owner since 4/11/17

    Pictured: PO (left) and me

  7. #7
    President Member
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    Quote Originally Posted by theron View Post
    IMG_20180710_172745.jpgThis is the fitting I'm having trouble finding the size of. It's smaller than 1/8" NPT and bigger than 1/16". The end that attaches to the pump IS 1/8" inverted flare.

    It IS a 1/8" MNPT . On a V8, it can screw directly into the head / on a Six I don't know, but they never reinvented the wheel much.
    64 GT Hawk (K7)
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