Carb Inlet Fitting

[Stanton]

The IH carb on my 1942 Farmall AV has this fitting on the inlet:


The inlet to this fitting is 1/8 pipe thread (straight, not tapered) with a built-in ferrule. A 5/16" brake line with 1/2" fittings that we usually use for a Cub is too big for it. It appears from the built-in ferrule that this fitting is for a flared pipe end.

Is this the correct fitting? If not, what is?

Would appreciate any help from members with the knowledge of what's supposed to go in there. Thank you.

[indy61]

This is what the new replacements look like.

https://brillman.com/product/carburetor ... -strainer/

[Jim Becker]

The outlet should have pipe thread and a screen (inside the cardboard tube in Indy61's picture). The inlet should be identical to the inlet of a Cub carb (compression fitting).

[Stanton]

The outlet should have pipe thread and a screen (inside the cardboard tube in Indy61's picture). The inlet should be identical to the inlet of a Cub carb (compression fitting).

That's fairly close to what I have. Here's a couple pics:

And here's the Brillman pic with what I'm missing in red:

Wonder if you can buy just that piece without buying the whole thing? Will have to do some checking around...

Thanks!

[Don McCombs]

Here's what you need...

http://www.tmtractor.com/new/fl/512fp.htm

[Jim Becker]

I thought you had what was pictured in the first post. An adequate replacement for the nut comes on each end of most pieces of brake line. You just need a compression ring to go with each one.

[Stanton]

I thought you had what was pictured in the first post. An adequate replacement for the nut comes on each end of most pieces of brake line. You just need a compression ring to go with each one.

The standard compression nut on the 5/16" steel fuel lines we all use for Cubs has an outside diameter of almost 1/2". The inlet diameter of this brass fitting is less than 7/16" (approx. 13/64"), so the larger compression nut won't work.

Here's what you need...

http://www.tmtractor.com/new/fl/512fp.htm

Thanks, but don't believe so, Don. Think that diameter and thread-count are the same as the 1/2-20 compression nut that comes with the standard 5/16" steel brake line; too big.

I'll keep looking...

[Don McCombs]

OK. I missed that in your first post. I wonder if you can even use a 5/16 fuel line with what you have?

[Stanton]

OK. I missed that in your first post. I wonder if you can even use a 5/16 fuel line with what you have?

Just going by what Steiner's sells, it states that it's a 5/16" fuel line with plain ends (I"m assuming 1/2-20 compression nuts and 5/16" ferrules):
https://www.steinertractor.com/IHS937?crawlparam&gclid=CjwKCAiA1rPyBRAREiwA1UIy8FwT0TsdEJJ0OtXMkYe8xP-bzD-q1jLBh22_1faZD6il0akgJe1jmxoCLlMQAvD_BwE

[Don McCombs]

Let us know how you make out.

[Dale Finch]

FYI, Steiner has two different "Carburetor Elbow With Strainer Assemblies", so if you are replacing the whole piece, make sure you get the correct one:
A 1/4" O.D. fuel line:
https://www.steinertractor.com/IHS966-Carburetor-Elbow-with-strainer-assembly-for-14-OD-fuel-line-
And the 5/16" O.D. fuel line:
https://www.steinertractor.com/IHS1124-Carburetor-Elbow-with-strainer-assembly

[Stanton]

FYI, Steiner has two different "Carburetor Elbow With Strainer Assemblies", so if you are replacing the whole piece, make sure you get the correct one:
A 1/4" O.D. fuel line:
https://www.steinertractor.com/IHS966-Carburetor-Elbow-with-strainer-assembly-for-14-OD-fuel-line-
And the 5/16" O.D. fuel line:
https://www.steinertractor.com/IHS1124-Carburetor-Elbow-with-strainer-assembly

Thanks, Dale. I missed that one. If my AV originally took a 1/4"OD fuel line, that could be why I'm having trouble finding a 5/16" sized one. The search continues...