Fuel Lines

Discussion in 'General Chat' started by PhilRyder, Jun 6, 2022.

  1. PhilRyder

    PhilRyder Paid Member Paid Member

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    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?
     
  2. dodgy

    dodgy Paid Member Paid Member

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    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?
     
  3. PhilRyder

    PhilRyder Paid Member Paid Member

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    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.
     
  4. Tristan

    Tristan Paid Member Paid Member

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    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.
     
  5. PhilRyder

    PhilRyder Paid Member Paid Member

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    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?
     
  6. Tristan

    Tristan Paid Member Paid Member

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    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.
     
    KeithMac likes this.
  7. PhilRyder

    PhilRyder Paid Member Paid Member

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    Advanced Fluid Solutions do SAEJ30R9 nitrile rubber fuel injection hose for less than £4 a metre. That seems pretty reasonable to me?
     
  8. Tristan

    Tristan Paid Member Paid Member

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    That seems very cheap indeed..
     
  9. Tristan

    Tristan Paid Member Paid Member

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    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.
     
  10. PhilRyder

    PhilRyder Paid Member Paid Member

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    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.
     
  11. Tristan

    Tristan Paid Member Paid Member

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    Yes, very popular on clubman rally cars, but usually ran through the inside.
     
  12. KeithMac Forum Junkie

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    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.
     
  13. NateS2

    NateS2 Paid Member Paid Member

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  14. PhilRyder

    PhilRyder Paid Member Paid Member

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    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.
     
  15. NateS2

    NateS2 Paid Member Paid Member

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    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.
     

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