12 replies to this topic

[59 Speed]

Bought 5 metres of this years ago to run my fuel lines inside my car. Decided against running them inside, but would this type of hose be suitable to be run under the car in place of the metal type?

http://www.carbuilde...uel-hose-6mm-14

Cheers,
Ian

[Gremlin]

Personally I wouldn't, I'm sure you could sell it to people on here for just as much as you paid, why are you not going to run it inside

[59 Speed]

Personally I wouldn't, I'm sure you could sell it to people on here for just as much as you paid, why are you not going to run it inside

I've read that it will whiff of petrol in the car plus safety if it leaks

[RedRuby]

Unless you shroud it, which partly defeats the object, on safety grounds I would not run it under the car as it is too prone to damage from road debris.

[Gremlin]

Personally I wouldn't, I'm sure you could sell it to people on here for just as much as you paid, why are you not going to run it inside

I've read that it will whiff of petrol in the car plus safety if it leaks

It will only wiff of petrol if it leaks, and why would it leak? Just don't have any joins in the car

[zerobelow]

Fuel hose is porous, and fuel vapour can leak through the shell, even if it's in perfect shape. In general, it is recommended to keep hose to a minimum, it's best to run pipe for the long distances. It's more durable, longer lasting, doesn't get eaten by ethanol in fuel, and doesn't let vapour leak out.

 

Tube for the long runs, hose for the small places where flexibility or bends are needed. 

 

Will that work? Yeah. And you probably won't even notice the vapour since it's outside (it's really a small amount, though you're likely to notice it if inside the car). But it's not the "right" solution…also, the tube is a smaller diameter, so it's less likely to get hit underneath, in the first place. 

[Captain Mainwaring]

I forget now the legalities of running fuel supplies inside the car, but I wouldn't.

 

As for hose that you've had for years.....hmmmm

[Tahiti Joe]

Ooooft, overbraid. I wouldn't use it inside the car, or outside too be honest. In fact i dont use it anywhere anymore! Wouldn't even think about it if its been sat around for a few years, it does tend to go brittle and go off, and for the price of a few metres of hose its really not worth it.

[59 Speed]

Cheers for the feedback guys.

I'll go for rigid pipe underneath then, most likely kunifer as I've used it on my brake lines.

Out of interest what inside diameter pipe should I be looking at for a fast road 1380, 6mm or 8mm?

[Gremlin]

6mm will be plentiful

[59 Speed]

6mm will be plentiful

Cheers!

Is that 6mm outer diameter or inner?

Looked into kunifer pipes and they show 6mm outer = 4.58mm inner after wall thickness taken away
or 8mm outer = 6.58mm inner

The old rubber petrol pipe I had was 6mm inner I think.

Cheers

[jpw1275]

Going off my twin su's the fuel pipe is 6mm internal diameter but im not sure if the rest of the fuel pipe to the tank is the same

cheers james

[zerobelow]

Generally, tube is measured with outer diameter, and hose is measured in inner diameter, and they are considered to be direct replacements for eachother. If you had 6mm hose, replace it with 6mm tube. Having a straighter run and smoother inside will make up for any minute loss to diameter.