Not sure about this. In restoring my 71 Comet GT, I took off the old steel fuel line and replaced it with a one piece stainless line. Afterwards, I compared the lines and noticed the old line was 3/8 and the new line I installed was 5/16! I caught my mistake too late. The motor runs fine with the car up on jacks, but I wonder what will happen when I get it on the road? I notice the glass fuel filter is not full like it was before. It doesn't even fill up while the motor is running like it did before. What is your diagnosis? Oh yes, my ASE mechanic who used to race the old Fords says it should run just fine...
Its fine, and will be good in the future, if you do a few upgrades to the engine that increase fuel requirements...
5/16 is plenty for most mild engines. I was shocked when I stripped my car down and found it had a 3/8" line on it. Way overkill for any stock Maverick offering. SPark
When measuring stainless steel...you go by the O.D...not the I.D. like with steel, plastic, copper, ect.
Good catch. I am thinking this stainless steel fuel line that I got from Summit is really even smaller than 5/16 on the inside diameter? If so, I still wonder if it will give me the gas I need? I am not driving it, yet, as I am putting it in the paint shop soon and have it stripped down. I will know when I get it on the road... so I won't drive it far from home until I know for sure. I might have a... micrometer?
If you're thinking of redoing the fuel line -- I would -- be aware that 3/8 aluminum is really easy to bend. I recently did a new line for a truck and was amazed at how easy it was. Gentle bends can be made with your hands with no kinking. Sharp bends with a cheap tool.
From the factory my 428CJ Fairlane has a 5/16" line from the pump to carb(3/8" to pump), never been a issue in the 40+ years I've owned it...
^^ Same on my Falcon running a small block. I was surprised when I saw a 3/8" fuel line on a Maverick.
