Looking for a compression fitting

[ken-r-mer]

Decided to run nice looking 5/16" copper fuel lines between the pair of Stromberg 97"s and the mechanical fuel pump. Got the lines formed but ... I also want to do compression fittings instead of flared ends for the copper lines.

Searched high and low and can't find a fitting w/ a 5/16" compression fitting on one end and a male 3/8" SAE 20 threads/inch on the other end. The 3/8" SAE fitting is what is on the fuel inlet of the Strombergs. I can find npt but thats 18 threads per inch. Need the SAE 20 threads/inch male end.

Anybody know of such a fitting?

[4dFord/SC]

Is this what you are looking for? http://www.thehotrodcompany.com/shop...oduct_id=9081K

[oldford2]

Try Edelmann fittings. My Carquest guy carries them. I would think 1/4" would work fine. JMO

http://www.plews-edelmann.com/search...h=AND&F_Sort=2

http://www.plews-edelmann.com/compression-fittings/

John

[Dick's Hot Rod Place]

First of all, your looking for the wrong thing. The inlet size is 1/2"-20. I can supply you with the fittings. Give me a holler.

[ken ct]

Like John said all you need is 1/4" line,NO advantage to using 5/16". Fittings are availible. ken ct.

[ford3]

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illegle to use copper lines for fuel

[36rgtop]

Originally Posted by ford3

illegle to use copper lines for fuel

Think you have it wrong, believe it's for brake lines.

[oldford2]

"Illegle" (sp.). Now where in the world did you hear that? Looks like we are all going to jail. LOL
John

[ken ct]

Originally Posted by ford3

illegle to use copper lines for fuel

Since when and where is it illegal. Have copper gas line from tank to carb for over 20 yrs now no problems yet. Ken ct OMO.

[V8COOPMAN]

Thought I heard that if ya read it on the internet, it must be TRUE! DD

[ken ct]

Originally Posted by 36rgtop

Think you have it wrong, believe it's for brake lines.

You got it right 36RGTOP. Brake lines . ken ct.

[joe plumber]

If I was going to use copper for fuel lines,which I wouldn't, I would much rather use flared fittings over compression fiitings. JMO. To each his own.

[Andy]

I liked to use the cad plated brake lines. I use the brake line nut and use a copper compression ferrel. I have done this since 1960 on all my carb lines.

[ford3]

LOL im old and not very literate, but show me one car that has a copper fuel line, all fuel lines are steel from the tank to the carb, take any car to have it saftey inspected and it wont pass using copper fuel lines

[Dick's Hot Rod Place]

Originally Posted by ford3

LOL im old and not very literate, but show me one car that has a copper fuel line, all fuel lines are steel from the tank to the carb, take any car to have it saftey inspected and it wont pass using copper fuel lines

You must not get out much. Copper fuel lines have been used since the 40's and are still used quite frequently today. And yes, they are legal.

[Tom Walker]

I've always been taught copper is fine, but put a twist in a long run to allow for expansion and clip pipe properly to stop it vibrating, as it work hardens then cracks.

[Mart]

I can only reiterate what has been said before. Use 1/4". Copper or steel, it all works. You can buy a 1/4" compression tee fitting to split the feed from one carb to two. 1/4" pipe will flow more than enough fuel for a flathead.

Mart.

[joe plumber]

5/16" OD= 1/4" ID. Which measurement is being referenced when talking about line size

[joe plumber]

Originally Posted by Tom Walker

I've always been taught copper is fine, but put a twist in a long run to allow for expansion and clip pipe properly to stop it vibrating, as it work hardens then cracks.

Electrolysis also comes into play if not properly insulated .

[rotorwrench]

Most of the old stuff had copper plated steel. The copper plating was excellent to prevent rapid corrosion. This is what FoMoCo used back in the day. Copper fatigues faster than steel under vibration stresses. It will still last a long time but it isn't used at all in aviation for the fatigue factor. 5052 aluminum tube and stainless steel tube are the common types used there.

Copper tubing generally always has some service loops turned into it to absorb vibrations a bit better and lessen it's chances of fracturing as Tom Walker previously mentioned.