rulloyd Posted August 31, 2020 Report Share Posted August 31, 2020 Hi all I'm thinking of using nylon air pipe to carry fuel front to back, as an alternative to the steel pipe, like this one: https://www.ebay.co.uk/itm/Flexible-Nylon-Tubing-30-Metre-Coil-Pneumatic-Air-Pipe/110815841282?_trkparms=aid%3D1110006%26algo%3DHOMESPLICE.SIM%26ao%3D1%26asc%3D225114%26meid%3D0d16ccaa54834d368defacc332011f3e%26pid%3D100276%26rk%3D1%26rkt%3D4%26mehot%3Dpp%26sd%3D122850372975%26itm%3D110815841282%26pmt%3D1%26noa%3D0%26pg%3D2060778%26algv%3DSimplAMLv5PairwiseWeb%26brand%3DUnbranded&_trksid=p2060778.c100276.m3476= Does anyone know how nylon pipe stands up to Ethanol please? Any views? Many thanks Rich Link to comment Share on other sites More sharing options...
Pete Lewis Posted September 1, 2020 Report Share Posted September 1, 2020 but there is nylon fuel pipes its used on all modern cars we introduce the first use of nylon air pipe on trucks back in the 70s the first degraded in sunlight as being out in an open chassis these were all coloured , reverted to black with a colour printed in the outer sorry no idea ,a about modern pipes and ethanol , their specification should spell out any restrictions to their useage and beware of claims on ebay pete Link to comment Share on other sites More sharing options...
Clive Posted September 1, 2020 Report Share Posted September 1, 2020 Nylon has very good resistance to ethanol. So no problems there. Link to comment Share on other sites More sharing options...
Paulfc Posted September 1, 2020 Report Share Posted September 1, 2020 If inexpensive plastic pipe is ethanol proof, why is there such a debate about R9/R14 Specification hose as being the “must have” for safe use? Paul Link to comment Share on other sites More sharing options...
Pete Lewis Posted September 1, 2020 Report Share Posted September 1, 2020 nylon does not really suit having hose clip fittings , more tend to be the old olive with a insert or a self seal push fit no reason why it cant be used . https://www.amazon.co.uk/Connect-Disconnect-Connector-Coupler-Fittings/dp/B07G26322J Link to comment Share on other sites More sharing options...
Colin Lindsay Posted September 1, 2020 Report Share Posted September 1, 2020 Be sure to notify your Insurance Company, in the event of any fire-related claims they may be a bit sniffy. Link to comment Share on other sites More sharing options...
Clive Posted September 1, 2020 Report Share Posted September 1, 2020 7 hours ago, Paulfc said: If inexpensive plastic pipe is ethanol proof, why is there such a debate about R9/R14 Specification hose as being the “must have” for safe use? Paul Because it is more a replacement for the copper/steel fuel pipe, rather than the rubber joining sections. Could be done without rubber, but would be a bit of a faff. Link to comment Share on other sites More sharing options...
Peter Truman Posted September 1, 2020 Report Share Posted September 1, 2020 I used nylon hose on the Vitesse as I omitted fitting the steel pipe when the body was off & to avoid a central rubber pipe joint thro the central outrigger, I strengthened the nylon jointing by using a thin internal stainless steel sleeve in the nylon at the joints so when joining the nylon to steel pipe with rubber pipe the hose clips don't compress the nylon pipe which would neck at the joint and with time ultimately leak if not supported internally Link to comment Share on other sites More sharing options...
Paulfc Posted September 2, 2020 Report Share Posted September 2, 2020 Thanks Clive. Link to comment Share on other sites More sharing options...
yorkshire_spam Posted September 2, 2020 Report Share Posted September 2, 2020 I might be halucinating due to being confined indoors for months on end, but I seem to remember the MK1 Freelanders had rigid plastic pipes for the underbody sections of the fuel systems. Link to comment Share on other sites More sharing options...
Colin Lindsay Posted September 2, 2020 Report Share Posted September 2, 2020 2 hours ago, yorkshire_spam said: I might be halucinating due to being confined indoors for months on end, but I seem to remember the MK1 Freelanders had rigid plastic pipes for the underbody sections of the fuel systems. You're correct but they're a strange layout - I don't think you could even begin to adapt them for any of our cars - and whatever they're made from, they cost a whopping £500 to replace... Link to comment Share on other sites More sharing options...
NonMember Posted September 2, 2020 Report Share Posted September 2, 2020 I'm fairly sure my "original unmolested" (two owners from new at the time) 2500S had rigid plastic fuel pipe for the underbody section. Link to comment Share on other sites More sharing options...
yorkshire_spam Posted September 2, 2020 Report Share Posted September 2, 2020 2 hours ago, Colin Lindsay said: You're correct but they're a strange layout - I don't think you could even begin to adapt them for any of our cars - and whatever they're made from, they cost a whopping £500 to replace... Yeah, I wasn't really saying the freelander ones were suitable for re-use, more trying (clearly badly!) to say that if it's ok for moderns to have plastic fuel pipes from new I don't see any reason why we couldn't replace steel with plastic on our old motors if we felt like it. Link to comment Share on other sites More sharing options...
Colin Lindsay Posted September 2, 2020 Report Share Posted September 2, 2020 36 minutes ago, yorkshire_spam said: Yeah, I wasn't really saying the freelander ones were suitable for re-use, more trying (clearly badly!) to say that if it's ok for moderns to have plastic fuel pipes from new I don't see any reason why we couldn't replace steel with plastic on our old motors if we felt like it. No worries, I know what you meant. What I was getting was if the material can be identified, then maybe we could obtain suitable quantities of similar to replace our standard metal pipes, but to buy a Freelander set would be pointless as there's no piece long enough for a Triumph to use. 1 Link to comment Share on other sites More sharing options...
SpitFire6 Posted September 2, 2020 Report Share Posted September 2, 2020 Are the high-pressure PI injector hoses nylon? Link to comment Share on other sites More sharing options...
rulloyd Posted September 3, 2020 Author Report Share Posted September 3, 2020 I checked with the supplier of the air hose in the link above whether it could carry fuel.. Seems you need to be careful which hose you choose :-( "We would not recommend it, this product isn't designed for fuel of any kind". Link to comment Share on other sites More sharing options...
rulloyd Posted September 3, 2020 Author Report Share Posted September 3, 2020 Makes me wonder how many of the hoses on ebay that say they can, are actually rated to carry fuel. Dodgy ground. Link to comment Share on other sites More sharing options...
Pete Lewis Posted September 3, 2020 Report Share Posted September 3, 2020 as i said the specification of the product should define its uses and restrictions so next step is look up plastic fuel pipe not plastic air pipe ?? do you have local Pirtek or similar where they can sell you the right stuff and any fittings you may need Pete Link to comment Share on other sites More sharing options...
thescrapman Posted September 3, 2020 Report Share Posted September 3, 2020 Lots of marine fuel hose seems to be nylon. plenty out there Link to comment Share on other sites More sharing options...
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