what do you do for fuel pipe long runs?

[steveo3002]

not really a kit car but im altering something

original factory cars seem to have hard pre shaped nylon tube for the fuel and then a small rubber bit each end

is it good practice to run rubber line all the way or what are you using ?

[AdamIndy]

Mine is rubber line from back to the front. Never had an issue.

Though one thing to beware is there has been a massive batch made up that is junk. Petrol eats it even though the numbers on the pipe are correct. If you buy some then make sure to buy from someone who knows about it. You don't want any fuel leaks.

Edited to add

Mine is a low pressure carb setup(C 4psi). An FI setup running 3bar might have different results.

[shirt]

I use teflon with steel overbraid and swaged fittings.

Edited by shirt on Sunday 11th December 17:38

[ugg10]

In my Anglia I have an injection set up so, 8mm cunifer (copper nickel) front to back with flailed ends and covered with clear heat shrink (to keep it looking nice only), connection to tank and fuel rail are fuel injection rubber hose.

[CrutyRammers]

Most in kit-car land seem to use solid copper pipe for long straight runs, using rubber for any joins. I went for aeroquip braided hose thoughout in the interest of reducing the number of joins. Though you can find any number of opinions that any approach you choose is bad for one reason or another.

[gtmdriver]

Having done a lot of research on the effects of bio-fuel I made all my long lines from stainless steel and the shorter runs from bio fuel proof elastomer.





This table shows the compatible materials.

Edited by gtmdriver on Sunday 11th December 22:03

[CrutyRammers]

Fun putting flares on stainless I'll bet?

[gtmdriver]

....and bending it.

I had to anneal each bend and the end of the tube before flaring it but a simple flaring punch from eBay did the trick.

Still worth it though just for the peace of mind.