Fuel Line Connections to Glass Dome AC Fuel Pump

[bdea]

Could anyone please give me the detailed specifications for the Compression Nipple into the fuel pump using a brass ferrule and 1/4" nylon fuel line. I'm totally confused... about the length, thread diameter/size etc., hex nut size, chamfer/angle of ferrule vs compression nipple concave surface. Is it a standard nipple?

Can this be bought at a local hardware or auto parts store.

My problem is that I substituted a barbed brass nipple to the outlet side of the pump, the brass nipple bottomed out on the hex head on body of pump rather inside the pump itself creating at weepage issue. Upon disassembly, the brass compression ferrule sat sideways, partially blocking the fuel path.

Are the any resources in the San Francisco Bay Area for these parts, 1/4" nylon fuel line, Compression Nipple, and Ferrule? A friend suggested that I tap out the output side of the fuel pump to 1/8"NPT and be done!

Anyone willing to part with a Compression Nipple?

One More question: What size o ring for the Stromberg Float Bowl Jet Cover?

Many Thanks Again.

[types26/36]

This thread may point you towards the olive size:
lotus-electrical-f38/olive-diameter-t18586.html

[oldelanman]

The tube nut thread measures 12.5mm (0.492") diameter x 20 tpi. I don't have any thread gauges but that looks like 1/2" - 20 UNF. Overall length is 17.6mm (0.693") and spanner size is 1/2" AF. The brass olives are I believe standard items but, as stated in the other thread that Brian linked to, they must be imperial 1/4" .... 6mm olives do not fit.

Harold Houghton in the US may be able to supply the parts you need...http://www.classicpreservation.com/

[alan.barker]

+1 just measured my spare one 1/2" UNF 20 tpi. The Olive is with like concave contact areas and not the normal rounded shape.
Alan

[Craven]

If they can be found a ? inch COPPER barrel olive will form up far more easily than brass, a real advantage on the nylon feed pipe.
Tube nut if defiantly ? UNF but you need the long version to avoid contact with pump body before seal is formed by olive, although a pic shown is labelled, barrel olive, the form that works best has a plain section between the ends.