Fuel Lines

[Guest danny_samb]

Hi I have a dohc 2litre 8valve engine, what size fuel lines will it use 8mm internal diameter?

[Guest Ian & Carole]

8 mm will be fine and compatible with most off the shelf filters, pumps etc.

[richardm6994]

+1

 

I always ran 8mm with the 2ltr pinto without any problems

 

The 3.9 v8 now uses 10mm

[Guest danny_samb]

Will it be ok to run copper lines the length of the tunnel and metal overbraided to connect the tank, filter, pump and fuel rail,

[Snapperpaul]

Copper central heating microbore is fine

You must check if steel braided has fuel resistant rubber inside and IVA tester may want proof its fuel resistant, I did fit braided but it rotted in weeks so fitted rubber marked injection hose to the copper pipe

[Guest danny_samb]

It's already had its iva, I bought the car and fixing a few bits don't like the look of, and fuel lines look cobbled together

[Guest nippynick]

Ive got some really nice stainless steel hose clips if you'd like how many do you need

[Guest Ian & Carole]

Like Paul says be wary of the braided stuff, proper clips are a small fortune, and the braid don't half bite if you get hold of it wrong.

Good quality 8mm fuel pipe is as cheap as chips.

[Guest danny_samb]

Ye the clips aren't cheap but look smart haha, might go for the black overbraided rubber lines with the fancy connectors

[Grim]

the problem with braided hoses is that you can't tell when your hoses have perished. They are not worth the risk IMO.

[Snapperpaul]

If you get braided make sure they are fuel resistant

I was sold braided fuel resistant from a stall at Stonliegh only to have them all fail just before my SVA thus replaced by marked rubber

[brumster]

If you must go braided use PTFE-lined stuff. I always found the rubber stuff 'sweated' fuel odour through the pipe walls. You don't get this with the ptfe lined stuff, and it lasts forever.

 

But, as has been said, if you don't need abrasion resistance, fire resistance or protection from damage by flying debris then I wouldn't bother.

[cb750]

You could do what I did on my custom bike. As previous people have said, make sure you buy the correct fuel pipe but then overbraid it yourself. Use the smart ends to cover the braid. You can pick up the overbraid off ebay

[Guest evildave]

Braided lines are fine for mechanical protection but if ran near or over anything hot like along an inlet manifold or near an exhaust they can transfer heat to the fuel, not alot admitted but i was once told to ditch braided lines by a knowledgeable guy.