Fuel Lines Inside The Car?

[Burp]

Morning chaps, Im currenty building a Renault Clio Race Car and need a small bit of advice please.

We are running a swirl pot and 2nd fuel pump in the spare wheel well. All the hoses will be one peice from point to point with no joins.

Does the whole thing have to be in a box or do we have to cover the spare wheel well over? Some cars we have seen have them exposed and some have them covered over. Does it depend on what type of hose clip is being used? We will be using braided hose with the appropriate jubilee cip.

No one seems to be abe to give us a definative answer so I thought id get your thoughts. Thanks in advance

[andy rob]

there need to be a division between the fuel tank/pump/swirl pot & the driver compartment, if car is saloon with rear bulkhead then this is fine, if car is hatchback then tank/pot/pump will need to be covered, just remember tank/pot/pump cannot be right @ back of boot, fuel lines are fine to run inside drivers compartment

[teamHOLDENracing]

Burp said:

Morning chaps, Im currenty building a Renault Clio Race Car and need a small bit of advice please.

We are running a swirl pot and 2nd fuel pump in the spare wheel well. All the hoses will be one peice from point to point with no joins.

Does the whole thing have to be in a box or do we have to cover the spare wheel well over? Some cars we have seen have them exposed and some have them covered over. Does it depend on what type of hose clip is being used? We will be using braided hose with the appropriate jubilee cip.

No one seems to be abe to give us a definative answer so I thought id get your thoughts. Thanks in advance

You should use aeroquip hose fittings onto threaded bosses, not jubilee clips

[pistol pete]

teamHOLDENracing said:

You should use aeroquip hose fittings onto threaded bosses, not jubilee clips

Yep.


In my experience, aeroquip hose weeps a small amount of fuel vapour through it. Run inside the drivers compartment it will stink of fuel, not a good idea.

I used solid pipe from the underfloor tank to under the bonnet.

Pete

[fergus]

Burp said:

We are running a swirl pot and 2nd fuel pump in the spare wheel well. All the hoses will be one peice from point to point with no joins.

Not sure of the need to do that? My old Cup car only had a single, in tank, pump, and didn't require a swirl pot. I never had any issues, even when running on about half a tank full on slicks...

Are you suffering from fuel starvation issues at the moment?

[teamHOLDENracing]

pistol pete said:

teamHOLDENracing said:

You should use aeroquip hose fittings onto threaded bosses, not jubilee clips

Yep.


In my experience, aeroquip hose weeps a small amount of fuel vapour through it. Run inside the drivers compartment it will stink of fuel, not a good idea.

I used solid pipe from the underfloor tank to under the bonnet.

Pete

Horses for courses Pete. I don't like solid pipe in case there is significant accident damage which splits it, or it degrades with vibration over time. Even FIA spec ATL safety fuel cells allow a bit of fuel smell in the car (especially if you use Octane booster).

Back to the OP, if any of the fuel system is in the car it needs to be covered. Braided hose is fine as it it is deemed to have its own cover. The fuel tank, pumps, any swirl pot etc need to be compartmented from the driver

[Burp]

Thanks for the replys, will make a cover up for it. Its going to sit in the spare wheel well but towards the front.

Fergus, Last season we suffered quite badly at Gerrards at Mallory. Car had half a tank at the time. Never had it anywhere else but this is just a belt and braces job.

[Ali M]

Also worth noting, use braided hose running through the car.

I have just made the expensive mistake of using the new type of push on hose and corresponding Aeroquip fittings. After speaking to the scruiteneer, and even though the push on hose it reinforced and suited for fuel, MSA regs require braided hose and so I will have to change all of my fittings and hose.

I should have read the regs properly and have learnt the hard way!