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I need to replace the front to back hardlines on my efi range rover currently its a mixture of bits of the original steel lines bits of nylon and rubber. I need something flexible so I can thread it past LPG tanks etc. I was thinking of using the braided pfte type of pipe. It will need some sort of fitting to transition to rubber hose at each end.
Anyone any experience, think it would work recommend a supplier etc?
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Is copper a viable option? Even if it means re routing in places.
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I've never owned a car that didn't have nylon fuel pipes. Go to your local hydraulics supplier and buy a 20m coil of 6mm bore nylon airline. In black for an OE appearance. That's enough to do at least two cars, but it's about £20.
You can use many of the OE fittings by heating the end of the pipe and forcing them in place. The only advantage copper has is that you can form tighter bends.
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^^^ thats a very cheap option.
If going for a more expensive very flexible variant then the teflon lined braided hose is ethanol proof.
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I have bought a roll of copper but the problem is the original lines sat on top of the chassis sandwiched by the floor, it might be possible to wriggle something in but at the very least the LPG tank and piping would have to come out. I might go for a hybrid of the above and use the braided PTFE stuff with the proper fittings for the pressure line and the black nylon for the return. Another thought is just to do the whole lot in something like cohline rubber hose which would mean there are no joints.
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Avoid the cochline, it's good but it will ultimately crack or degrade. Proper Teflon lined braided is forever,as is the nylon tube, thhough I'm not sure about leaks with the nylon on joints, maybe Cochline rubber for joining it would be OK.
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I use 8mm black nylon tubing from legris for my diesel. 1025P0801 i believe it is.
Make sure to get the small brass strengthening tubes that fit in the ends if you're putting rubber hoses with hoseclamps on them. That way you don't crush the tube.
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I'm going to splash out on the teflon ones, the connections look more robust and the added protection of the braided outer will come in usefull where it passes around the chassis. I will get a an6 filter but it will need a barbed fitting and rubber hose at each end to join to the regulator, fuel rail and pump. Clipping will have to be P clips wherever I can get them in and probably some heavy duty tie straps. All it it will come in around £200, probably overkill but cheap insurance.
While I was under it at the weekend I took a closer look at the existing lines, it' s got something like half a dozen joints with bits of rubber hose and lengths of nylon (I bet thete no brass sleeves in there!), most of the clamps a very rusty and I'm pretty sure some of the hose is the original 35 year old stuff. Good news is someone has already hacked a hole in tbe boot floor so the tank won't need to come out though I will try to tidy the hole up.
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Last Edit: Jan 8, 2023 20:58:27 GMT by kevins
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