There isnt really a ideal section for this so I put it here as it is multi applicable. My BMW has metal fuel lines which are a bit worse for wear. I know VW are plastic but similar. I'm thinking of replacing them all with rubber. Views? Pros, cons, obvious issues I'm missing?
Refitted all of mine on the mk2 using mk4/a3 plastic mainly due to the fittings for ease, plus they are e10 compliant according to the government website, I used rubber and copper lines on the mini before and wasn't overly impressed in comparison. What do bmw use, can you adopt and adapt?
Copper I believe. I have too many joins for comfort and too many kinks. Out of tank copper then rubber to fuel pump then rubber to fuel filter then rubber to copper then rubber to engine I could lose at least two joins each way with all rubber. If I use PTFE I have same number of joins. I might install an in tank pump as well. Out of tank one is noisy.
If you can find a motorhome spares company, or a good truck spares place, you can but super strong, yet malleable steel line easily. In 8mm/10mm outer, 6mm/8mm inner. We use loads of it as camper gas line, and the trucks use it for fuel and air. Wurth sell it too, and both camper places and Wurth sell fittings for it, with self cutting olives. We'd have straight joiners, 90 degrees, Tees and 8 to 10mm adapters, I've used it on Golfs before, and on my own Ford RallyKa. It's so superior to copper, yet still super malleable and formable. You can bend it, with some effort, with your bare hands, and it won't kink.
I think the point is being missed here. I know I can fit some rigid pipe but it would be far easier to fit a nice flexible rubber pipe which reduces the number of connections I have. The question is are there any disadvantages to fitting rubber pipe throughout?
It's difficult enough to get flexible rub fuel pipe, that doesn't perish with modern petrol, and doesn’t let the smell through it. At a sensible price.
Advanced Fluid Solutions do SAEJ30R9 nitrile rubber fuel injection hose for less than £4 a metre. That seems pretty reasonable to me?
I suppose the only other main concern is the safety side of things, what with the possibility of stuff flying up off the road and damaging it.
AFS also do braided for a little more. I shall phone them tomorrow to check spec and bend radius. I just spoke to my MOT man who has an escort race car and he has all braided rubber.
You want braided PTFE / Teflon really. Don't put rubber anywhere near it imho, if you do use Cohline. I did my GTO in PTFE from Torques on Ebay.
Having spoken to someone who supplies Advanced Fluid Solutions, I wouldn't touch them. Cohline and Keith says and Cohpro is place if you want genuine hose at a reasonable price https://www.cohpro.com/low-pressure...on-2240/fuel-hose-ethanol-bio-safe-7-3mm.html
Thanks but why would the person you spoke to slate their own product? AFS supply Cohline as well so that’s a bit of a contradiction. I’ve found a supplier who were very helpful at a reasonable price for braided line, McGill Motorsport.
They weren't slating their product, they were slating the way the AFS business was ran. Didn't prod any deeper, just went with Cohpro who they recommended.