the bulb on my 21 hack is leaking are they worth the time to rebuild so they don't drip all the time or just replace it
Where is it leaking?
There are three places it can leak. Where is it leaking?
There are advantages to this type Harold. Tractor Supply carries them. Relativly cheap and easy to see when there's junk coming out of your tank. Also easy to clean.
What size thread would that be on a 1923 coupe fuel tank?
If the valve "plug" is leaking, the correct T era sealant is ordinary soap(the "scum" from the bottom of the soap dish works great). Remove the valve plug and coat it liberally and reinstall. This also is the correct sealant for the felt packings that Ford used on the fuel line
1/2" pipe, John.