Under Seat Fuel Tank Bung

[Mark Zanoni]

I'm working on the gas tank for my 66 CJ-6A Tux and I need to replace the fuel line outlet bung on the bottom of the tank. I believe its a 5/16' fine thread but more importantly it has the interior dip tube loop that has to slide into it from the back side. If anyone has a source for these it would be appreciated.

 

[linckeil]

You don’t mention the engine you have, but the F-head used a 1/4” steel line which threaded into the outlet bung on the fuel tank which had 7/16”-24 threads with an inverted flare seat.

I don’t know, but maybe the V6 may have gotten a larger 5/16” steel line which would use 1/2”-20 threads with an inverted flare seat.

I’m not familiar with the “interior dip tube loop” you mention.

 

[Howard Eisenhauer]

FWIW I made one for Tonk-

https://tantel.ca/Images/The%20Sludge%20Pile/Section_E_Fuel%20System/Fuel%20pickup%20repair_1jpg.JPG

https://tantel.ca/Images/The%20Sludge%20Pile/Section_E_Fuel%20System/Fuel%20pickup%20repair_2.JPG

https://tantel.ca/Images/The%20Sludge%20Pile/Section_E_Fuel%20System/Fuel%20pickup%20repair_3.JPG

https://tantel.ca/Images/The%20Sludge%20Pile/Section_E_Fuel%20System/Fuel%20pickup%20repair_4.JPG

https://tantel.ca/Images/The%20Sludge%20Pile/Section_E_Fuel%20System/Fuel%20pickup%20repair_5.JPG

https://tantel.ca/Images/The%20Sludge%20Pile/Section_E_Fuel%20System/Fuel%20pickup%20repair_7.JPG

 

[Mark Zanoni]

Thanks for the feedback, I have the V6-225 in the Tux although there's no remaining fuel line to know what was there before. The engine was fairly complete though and there were no hard supply/return lines over the top of the engine so I'm assuming they ran below, next to to oil pan (early 66?). I am probably wrong on the thread size for the bung.

Howard - It looks like your DIY set up had a hose barb coming off the bottom of the tank, did you run nylon lines to hard lines over the top of the engine?

 

[iharding]

I got a new metal tank with my jeep. The supply line uses an inverted flare. The drain plug is NPT. I don't remember the sizes. I had to find a nipple with NPT threads to misuse drain plug as a supply line.

 

[Howard Eisenhauer]

Howard - It looks like your DIY set up had a hose barb coming off the bottom of the tank, did you run nylon lines to hard lines over the top of the engine?

Not a barb, it matches the stock inverse flare fitting for a steel line. I would not recommend nylon, or any other plastic, to carry fuel inside the engine compartment.

 

[compostwerks]

This is what you need;

My apologies, I could not resist my infantile side....

 

[Mark Zanoni]

Not a barb, it matches the stock inverse flare fitting for a steel line. I would not recommend nylon, or any other plastic, to carry fuel inside the engine compartment.

I agree with no plastic/nylon.