Quote:
Originally Posted by Barlea
Yes, the military engines and the post-war Ford Canada V8s with the full flow option used the 1/4" pipe thread oil ports, but remember that 1/4" pipe thread is bigger than 1/4", and a 1/4" pipe thread fitting for a 3/8" ID pressure hose or pipe will provide a 3/8"ID through it. The drawing from the '46 Ford Mercury Monarch parts manual shows the type available through '48, with 3/8" ID hard lines, and the later type available until the end of '51 used a different cannister and 3/8" flexible lines. Both used a similar fitting into the outboard oil port for the pressure line to the filter. ..B.
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I have weatherhead 1/4" male pipe to 3/8" id barbed hose fittings in my shop they have a .250" passage through them not 3/8". Impossible to have a 3/8" barb fitting with a 3/8" passage for a hose with a 3/8" id. Id and od would be the same ??
R