Oil Line fittings

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I started working on my oil cooler, oil filter and lines. The lines are 1/2″ OD copper. The actual OD is .500″ not Nominal like you would find in copper piping. They have what appears to be a 37 degree flare on the ends, which matches typical fluid line specs. Mine looked to be nickel plated which is what the initials NW (nickel white) indicates in the parts book.

I was then trying to find some fittings to attach the lines. I came up with the following:

SAE 070111 (Aeroquip 221000 or Weatherhead C5115) Long Flare Nut (JIC). Part Number 304-08 which has .500″ ID and female 3/4″ x 16 threads like the filter has.

The ones I got were steel and the difference compared to original were,

length 1.28″ vs orig 1.109″ ( you can flycut/grind/saw the ends down)

Length of hex section .446 vs .471 (.025″) which is noticeable in side by side below. I doubt if you can tell on the car without actually measuring.

I got them for $1.47 each plus freight from Hydraulicsdirect.com., which fit my budget. They are cad plated so will have to be nickled.

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Here is clearer shot. You would take material from the top to shorten.

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Modern fittings will knock off points every time during judging. Incorrect oil lines, fittings, and oil filters are incorrect more often than not today. It takes a lot of time and a fair amount of money to get all the lines correct. Ed.

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