plumbing fuel lines

[70_boosted]

so i am in the progress of getting fuel lines all plumbed out, tho my pump, regulator, and fuel cell all have an fittings. so from pump to regulator runs an AN-10, tho i was going to run steel/aluminum line along the frame to cut down cost on. is 1/2 over kill or can it be taken down to a 3/8 line?

from carb to fuel regulator i have the dual carb and fuel line kit running AN-6, so thats all taken care of.

from regulator to pump, im planning on running a an-10/npt 1/2 fitting then running formed lines along the frame/firewall back to the fuel pump. again using another an to npt fitting.

from pump to fuel cell just a an-10 to an-8 line

for the fuel return i am going to do the same thing as fuel feed. run an an-8 to npt 3/8 fitting and run steel line back to the fuel cell than run another fitting with a short flex line to the tank.

am i better off running a 1/2 line mated to the an-10 fitting or can i get away with running a 3/8 line to such? feeding a twin turbo 500!?

 

[junker39]

Just my opinion but I would run the 1/2 inch everywhere I could. That beast is going to be real thirsty. It would be a disaster to have it lean out from poor fuel delivery, at 6000 RPM, under full boost.

 

[Old Iron]

Just my opinion but I would run the 1/2 inch everywhere I could. That beast is going to be real thirsty. It would be a disaster to have it lean out from poor fuel delivery, at 6000 RPM, under full boost.

Yep 1/2 supply line 3/8 return you wont be sorry.

 

[70_boosted]

perfect, thank you guys

 

[440Clark]

The answer to your question depends on your pump and regulator combo as well. There are some that recommend the same diameter supply and return.

 

[70_boosted]

a1000 pump and corresponding regulator. pump has an-10 and the tank has an-8 feed/return. regulator has inlet of an AN-10, return of AN-8 and (2) AN-6 feed lines for the carb, plus a small AN for gauge.

im going to run an fittings and prefabbed lines, except for when i need to run hard line the length of the vehicle. so the 1/2 feed line, and 3/8 return line.