Fuel line questions

[Nobimmer 694]

So what is the deal with running fuel lines?

I am ditching the whole system including tank, steel lines, and all rubber lines.

Few things I need to know.

1.) Can I run rubber/braided lines inside the cabin? If so, under what circumstances? Heath mentioned something about using teflon coated to eliminate smell?

2.) Can I run the above in place of the steel lines in the same place? Maybe with a steel skid plate covering them or similar?

3.) For the breather to not leak when (lol) the car rolls, do I just swirl it over a few times and have it sitting underneath the lowest point of the fuel system?

All I can find is this:

4.11 Fuel Tank and Fillers:

(1) Fuel tanks, Swirl Pots, Filters, Fillers and Pumps: shall be isolated so that in the

case of any leakage or spillage the fuel cannot pass into the cockpit. For vehicles fitted

with fuel cells (bladder tanks) MotorSport NZ recommends that competitors inspect the

bladder at least annually for chafing and deterioration. No expiry shall apply to fuel cells

(bladder tanks) under this schedule.

(2) Fuel Tank Vents: Vents should be designed to avoid spillage if the vehicle becomes

inverted.

(3) Fuel tank capacity: is limited to a maximum of 120 Litres unless the vehicle

manufacturers original tank was of greater capacity. In such cases the onus rests with

the competitor to provide evidence to support the fitment of a larger capacity tank.

Note: Total tank capacity shall include any swirl pots, filters or any additional tanks.

(4) All vehicles except Single seaters and Sports racing cars: shall have fuel tanks or

approved fuel cells and fillers that comply with the following;

(a) Are original equipment as fitted to the vehicle; or,

( Are to a standard specified in the vehicle class schedule, or

© To a standard recognised by the FIA and/or MotorSport NZ.

(5) Single seaters and Sports racing cars: shall have fuel tanks and fillers that comply

with the following;

(a) Are to a standard specified in the vehicle class schedule, or

( To a standard recognised by the FIA and/or MotorSport NZ.

and this

5.1 Engine, transmission and ancillaries:

(1) These shall be kept clean and free of significant fluid leaks, and at all times be firmly

secured to the vehicle chassis on mechanically sound mountings.

(2) Flexible hoses: shall be used to join components of a fluid system where movement

exists between them.

Hoses containing cooling water or lubricating oil must be located outside the cockpit

except where the following criteria are met and when hoses are substituted from the

manufacturers original specification the following minimum requirements shall apply;

(a) A minimum burst pressure of 70 bar (1000psi), and

( A minimum operating temperature of 135°C (250°F), and

© Have threaded connectors, and

(d) Have an outer braiding resistant to abrasion and flame, and

(e) Be of a type suitable for the fluid concerned, and

(f) Be adequately located, and

(g) Have no evidence of leakage.

So does that mean I can run them in cabin if I use threaded fittings or...?

Any help would be great

Cheers

Ashkan

[Nobimmer 694]

Bump, calling dave

[westy 614]

The answer to 3 is, if you use the original filler the breather is on the tank side of the cap in the filler pipe, so wont leak in a roll over. Make sense?

Also, how come flexie fuel line? and why inside cabin? Standard steel line should be sweet?

[Nobimmer 694]

Thought it would be easier to diy without needing to get them crimped etc.

Otherwise, where would one buy a roll of the steel to diy?

[westy 614]

Why you replacing the stock lines though?

[Nobimmer 694]

Oh right, they are all f**ked. All of them.

Will get pics.

[Silver Fox 43]

Save the hassle and replace the stock lines? last thing I'd want is fuel in the car.

[Nobimmer 694]

Sweet, have sorted a flaring tool and will give it a go myself.

Where to get fuel line from? Or can you get a factory replacement for the set?

[hybrid 1044]

All the steel lines are f*cked ? .. I would just replace the rubber. Last resort is gayco or supergreg I mean cheap.