MTFCA Forum

Brass fitting names and sizes appreciated in the picture for the gas line to the carburetor. To me it looks to have a shut-off valve on the line and a quick disconnect at the carburetor. A few of us have talked us over and need help. Thanks in advance !

That looks like one of Scott Conger's shut off valves that he recently offered in the classifieds. There is no quick disconnect in the plumbing. jb

No quick disconnect. One or more of those fittings are machinist made by Scott

For years I use this one ; Toon

Here is the source for those fittings... https://www.mtfca.com/phpBB3/viewtopic. ... ve#p319844

I used the shut off valve from Snyder's and a fitting from the local hardware store. Works great!

Snyder's shut-off valve as pictured above is the type that needs to be lifted ever so slightly whilst turning then slight downward pressure to seat again to prevent a drip. There should be no need for any fitting on the gas line end as it's a standard Ford part ?????

Steve, thanks for the tip on lifting and pressing. The 1/4" fitting was too small for the Snyder valve so I needed the adapter. I was surprised because that fitting did look original and fit the 90 degree elbow that also looked original. I believe my truck was restored (maybe even built) by someone around 1982 and its obvious that a new tank, separator and I suspect fuel line where installed at that time so its likely that some things changed.

Steve

You are most welcome ! Did the p.o. use a compression fitting/ferrule ? Stock line is 1/4" that uses the original pack nut - I use the neoprene gasket rather than the felt now - don't have to compress the neoprene much for a good seal.

The threads on the valve are incorrect. You have to buy their matching incorrect fuel line nut.

That's news to me John - both original & repro nuts are the same thread that I've run across albeit the repro nuts are a bit tight on a 1/4" line.

My truck has a compression fitting with ferrule so no pack nut.

Steve

RajoRacer wrote: ↑

Sun Apr 28, 2024 1:13 pm

That's news to me John - both original & repro nuts are the same thread that I've run across albeit the repro nuts are a bit tight on a 1/4" line.

I went thru this the first time I bought the period looking 90 degree shut off valve. An original line nut wouldn't thread on. Too tight.
Had to buy their repop nut. If you fit a repop nut onto an original elbow fitting, you will notice it is real loose. To the point I dont trust the threads not to slip/strip when tightening.
The Ford thread is 1/2-18. Original, NOS fittings measure .495" The new valve I have does measure .500, but the threads are not cut deep enough. I suspect the mfg is using a 1/4" straight pipe die.

SteveK wrote: ↑

Sun Apr 28, 2024 1:46 pm

My truck has a compression fitting with ferrule so no pack nut.

Steve

A ferrule fitting creates a shear line. Compression rings are not a good fix. I have seen copper lines break off @ the ring edge. If using a steel line you may not shear the line, but I dont take the chance.