A Thougt About Fuel Pipes
Turbo Mini Forums

I'm in the process of sticking a T2 on my daily 998 hack. One of the jobs is the fuel pipes.

Now I run 8mm feed and return on the TT and this works fine. However on the road 998 I'm only planning on running 8(ish)psi with around 90 bhp.

I don't have much time (or money) for this conversion so I was thinking of using the standard fuel pipe as a feed. Considering that it comes out of the tank and goes into the carb at the same diameter as the standard pipe, I don't see a problem.

What are peoples thoughts?

Fastest 998 mini in the world? 13.05 1/4 mile 106mph

The hole in the needle valve is only 2mm (approx) and all the fuel for the engine has to pass through this.
So standard pipes should be fine.
Regards
Dave

the needle valve may only be 2mm, and i use the standard pipe out the tank BUT the length of the restriction affects the fluid flow as well as the size of the restriction.

to be fair it should work fine.

you can even cheat further and not fit a fuel return. fit the fuel pump under the bonnet and fit the return from the regulator into the back of the pump with a "T" peice. it does work and works fine. also you can use a standard tank

that's bloody clever! i like that a lot.

it works fine BUT i would and have done the job properly. my reasoning is that fuel may vapourise (spelling?) and then the vapour is pumped round and round not back to the tank

not all pumps can be 2m away from the tank or can self prime either

I've seen the future and tbh its Pie

Ive seen 8mm OD hardline pipes feeding in excess of 500bhp in efi trim on different cars, with some having several 90 deg bends.

I wouldnt have too many concerns about even a 6mm OD feed pipe to a carb/reg on a Mini lacking in flow, especially with an efi pump

9.85 @ 145mph
202mph standing mile
speed didn't kill me, but taxation probably will