Fuel hose / system help

[harrymini]

Hi guys, as you may have seen on my build thread my car is off to be sprayed now i am thinking about the first bits i am going to need to get on the car before the subframes go in. Going to buy a standard copper 3/16 brake line kit. But unsure of the best way to do the fuel system?

Planning on going out of the tank on braided line to a folded aluminium 'enclosure' which will hold a facet pump and a filter king fuel pressure regulator with filter (is it advisable to run it nearer to the cars or is it ok in the boot?)

Then from there im unsure, i would like to use a solid line under the car and all the way to the front and somehow connect to the carbs from copper to braided?

Dont really want a braided line running inside the car.

What would your advice be on this?

Thanks again for your help on my questions!

[AndyPen]

Hi Harry,

we used to run a 'double ended' jag pump in the boot with no problems. We took the fuel line through the heel board (under rear seat) into the car as it was a rally car, but I am now running it in the normal position using the original tags under the car, under the steering rack and and bringing the pipe up to a bracket mounted on the crossmember. Be aware that the standard 850 bracket will most likely foul twin carb set ups though, as it sits to the left (as you look at it) of the heater pipes.

[harrymini]

Would it be best to run 5/16 fuel line for twin hs4?

And are copper lines ok or is there an alternative?

[Polarsilver]

Take Care they say this E5 Petrol we get in UK eats Copper & my 2 year old Rubber ethanol fuel suitable Flex Pipe is going rock hard .. i now only use Flex Fuel Pipe that suitable for E10 Petrol buy mine from Demon Tweeks with other suppliers available .. have a look there is a previous Post on this subject .

[MiNiKiN]

Would it be best to run 5/16 fuel line for twin hs4?

And are copper lines ok or is there an alternative?

I would probably go for Cunifer, as used for brake lines, fuel lines, etc.

[cheesebadger]

I spent some time looking into this a while ago...

As a few have already said, don't forget to consider ethanol content and how it behaves with cooper - poorly!
A number of people suggested "bundy" tubing, which is steel, but difficult to get hold of for sensible money in the UK - plus it has the obvious corrosion issues.

I did consider stainless steel lines for the corrosion issue, but these were even more expensive and would have been difficult to form.

Eventually I settled on 5/16" cunifer, as it will survive better than copper with the ethanol content, and is more formable/ductile than stainless.
I found a seller on ebay selling a useful length for a mini...

Good luck!

[Gray]

I used stainless steel and although harder to form it was not as bad as you might expect.