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I'm wondering what fuel lines are best to use for a custom setup.
my last setup I had the blue Parker house and it seems to dry rot / crack relatively quick. I have a sump to an A1000 ran in 5/8 and 1/2” to the heads.
I was maybe thinking of using steel braided hose or hard lines.
For fuel, I used -6 on the supply side and -4 on the return. Brake lines to calipers are -3. Brake line from the frame to the rear axle T is -4. They are holding up very well. Be warned though, the metal braid on the hose will make anything that touches them wear quickly. Be sure to put protective sleeve over any potential points of contact.