Gas Tank Question

[v8fordman]

Has anyone seen this type of outlet on a gas tank? The tank uses a round speedometer which makes it a mid 1930 and later. Is it a modified tank which had a teardrop firewall? What type of cutoff would it use?

[Ayers1]

That looks like a tank from a late 31 with indented firewall. It takes a special cut off and fuel line to the carb. It also takes a different carb too.

[mcgarrett]

Originally Posted by v8fordman

Has anyone seen this type of outlet on a gas tank? The tank uses a round speedometer which makes it a mid 1930 and later. Is it a modified tank which had a teardrop firewall? What type of cutoff would it use?

Snyders and other vendors have the fuel shutoff valve you need for that tank...

https://www.snydersantiqueauto.com/p...9340&cat=41707

You don't need a special carburetor for this tank, just connect the correct fuel line for the carb you have.

[Bob Bidonde]

You can avoid the rare & pricey side bowl carburetor by using Snyder's Late '31 Filter Kit A-9155-L31. An even less expensive avoidance is to install a modern in-line filter in the gas line. If you opt for the modern in-line filter, mount away from the exhaust manifold.

[Phil Brown]

The tank with that outlet is for a late "31" with an indented firewall

[gdmn852]

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Hello, here is a picture of gas line set up on 31 indented firewall, green box is electrical shutoff.

[v8fordman]

This is the reason I posed the question. The length of the outlet tube is different on these two tanks begging the question, were there different versions of the tank that went with tear drop firewalls? I have both of these tanks.

[Big hammer]

The red tank outlet looks short , the other tank outlet looks too long. I know sounds like a goldilocks story ;-) , the long might have a coupler added ?! After 95 years who knows what could have happened . My late 31 is 30 miles away or I would go look and measure for you . Maybe someone will measure theirs for you , I will be heading to my car Friday

[midgetracer]

I have 3 indented firewall tanks... 2 in vehicles and a spare. the spare measures 2.5 inches from the front of the tank to the end where the valves screws in. It measures about 4 inches to where it flares into the flange on the bottom and 5 inches to the end of the riveted flange. All measurements are not exact. The two in vehicles are of similar length, but hard to measure. The end where the valve attaches is flush with the gourmet on the engine side of the firewall. I believe the spare tank is the same. How about some measurements on your tanks as well as a photo from the side of the red tank.

[midgetracer]

It looks like the red tank has the outlet cut off as no inside threads are visible.

[v8fordman]

Here are pictures of both of them at the same angle. The red tank outlet is definitely shorter which is why I’m trying to figure this puzzle out. The outlet on the unpainted one is made in one piece and is solid. There are threads in the red one