Quote:

25 psi limit is laughable.

Lets use 3003 alum which is sort of popular for fuel line IIRC. Tensile strength is in the 13K+ range if my data is correct.

Let figure out burst pressure!

P = (2t x S) / O

Where:

P is burst pressure in PSI
t is wall thickness, in inches .035
S is tensile strength of material in PSI 13,000
O is outside diameter, inches .375

P = (2*.035*13000)/.375
P = .070*13000/.375
P = 910/.375
P = 2426

That's just a bit more burst pressure than 25 psi...



When the aluminum line cracks with 50 psi pressure there's a really good chance of your car catching fire.

When it cracks under suction it will leak a lot less gas.

Aluminum will crack and leak eventually, just a matter of when.

Build a quality car and use steel, there's still only one right way to do it.