[Woodchuck]

During the summer I watched quite a few 65-70 Mustangs at drag strips and noticed that quite a few that were really quick cars had fuel splash issues of fuel coming out the rear fuel filler cap area as they launched off the line.

What are some really good ways to stop that from happening aside from going to a custom fuel cell. My car will probably see high tens to low elevens so that is a concern.

I appreciate your input guys and thanks!

Stick this in the rubber hose....

Fuel Filler Neck Inlet Check Valve - 1-1/2" Hose

Tanks, Inc. manufactures fuel system components and polyethylene, steel and stainless steel gas tanks for street rods and special interest vehicles.

www.tanksinc.com

 

[Woodchuck]

Dang, same here, its 2.25" for 67-70 also. Maybe some modification is possible- maybe print a ring for a larger OD...if there is printer plastic impervious to gasoline. My local library will do 3D printing for next to nothing according to my son.

PVC is "gasoline proof". Grab a stub piece of Schedule 80 2" PVC.... it's 1.913" ID and 2.375" OD. Cut a "ring" to go around the valve... a little bit of sanding and maybe so mild heat will allow it to fit over the 2" check valve. Stuff it at the bottom of the hose just before it hooks to the tank. Finit.

 

[Woodchuck]

Bart, unless this quick search revealed another internet untruth..
View attachment 870114

This related to PVC HOSE which I would never use in a petroleum application. PVC pipe material is impervious to gasoline because there is not enough BTEX in gasoline to swell PVC and cause permeation, especially in a non-continuous contact application.