fuel tank issues
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Junior User
Joined: Jul 2014
Posts: 51
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From: Temple, TX
fuel tank issues
So I bought a new tank from LMC Truck and it has what appears to be a 3/8 opening in the back of my tank to thread the fuel line into. Someone had a plastic boat fuel cell in it before. They didn't hack up the metal fuel line, though. Problem is, looks like I have a 1/2 inch fitting to try and screw into a 3/8 hole!! Anyone run into this and if so, how to find an adapter to make this work?!?!
Matt Jarma
Temple, TX
54 F350 Script Bed, original 223 with original 4 speed
Matt Jarma
Temple, TX
54 F350 Script Bed, original 223 with original 4 speed
Thread Starter
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Junior User
Joined: Jul 2014
Posts: 51
Likes: 0
From: Temple, TX
This is my 3/8 opening, I assume. There isn't enough clearance for me to measure it.
This is my 1/2 inch fitting that needs to thread into the back of the tank. I assume there is an adapter for this to work?
Laughing Gas
Joined: Aug 2014
Posts: 806
Likes: 95
From: Madera Ranchos
Not being able to distinguish the actual size of the fitting in the new tank, I will offer up what I know of the subject. I believe the weld bung in the tank is either 1/4 npt or 3/8 npt, my guess here is, it looks like 1/4 npt to me. Beings that I have never seen a truck with 1/2" fuel lines I will say that the supply line is 5/16 with a male 5/16 inverted flare. So take the fitting out of the gas tank and take it to Napa and tell them you want a fitting similar but to have the same npt threads as the one you have and on the other end have female 5/16 inverted flare threads. At this point it will be just a process of elimination, but should only involve a couple trips to Napa
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