efp Posted January 30, 2016 Share Posted January 30, 2016 Managed to snap the long steel (?) fuel pipe running along the chassis when reinstalling on my mk2. Should I replace with the 81 quid Rimmers replacement copper kit or go for flexible hose all the way? 30R9 spec looks the way to go, (thanks Cliftyhanger) given the increasing ethanol content of modern fuel but Im leaning to keeping things as original-looking as possible. And if I go hose, can anyone recommend a supplier? Most suppliers seem very vague about their ratings. Quote Link to comment Share on other sites More sharing options...
drofgum Posted January 31, 2016 Share Posted January 31, 2016 efp,Why not replace with steel?Paul Quote Link to comment Share on other sites More sharing options...
Paudman Posted January 31, 2016 Share Posted January 31, 2016 Can you legally stretch that length of flexible hose along the outside of a chassis? I've no idea hence that's why I'm asking! Quote Link to comment Share on other sites More sharing options...
dinger Posted January 31, 2016 Share Posted January 31, 2016 No Must be metal .. had my wrist slapped by the MOT man years ago as the fear is unseen abrasion of the pipe - Flex pipe obviously allowed at each end . Quote Link to comment Share on other sites More sharing options...
WIMPUS Posted January 31, 2016 Share Posted January 31, 2016 Why just get a copper/Kunifer pipe (like brake lines) at a local car shop ? That would work to i think, and a lot cheaper then the pipe of Rimmer (that is just the same material).Seems James Paddock is selling a kit for 25 pounds..Also canley classics makes a kit for the GT6 MK2, 25 pounds (build to order and for the complete car).all is the same Kunifer material. Quote Link to comment Share on other sites More sharing options...
Nick Jones Posted January 31, 2016 Share Posted January 31, 2016 Full length flexi-hose....? No, don't do it!Roll of 8mm copper microbore heating pipe will work just fine. Just make sure it's properly supported at regular intervals, especially at the ends.Kunifer is better (more fatigue-cracking resistant) but pricier and harder to find.Nick Quote Link to comment Share on other sites More sharing options...
JohnD Posted January 31, 2016 Share Posted January 31, 2016 £81!!!!!!!!!!!!!!!!Even Demon Tweeks (never been oversold) sell Krontec specialist alloy fuel pipe for less than £20 for FOUR METRES!http://www.demon-tweeks.co.uk/.....mtube-4-metre-lengthJohn Quote Link to comment Share on other sites More sharing options...
efp Posted January 31, 2016 Author Share Posted January 31, 2016 Thanks all for your input.Paul, had discounted using steel again as I believe its a bugger to bend? But open to persuasion. Grant the original has lasted the best part of 50 years down there.Dinger and Nick, I didn't know full length flexi was an MOT no-no: rules that out, thanksWimpus, think the pipe needs to be 1/4 inch/6mm ish. Think most brake pipe is rather smaller bore? But may come bigger, I dunno.Yes, the Rimmer kit is expensive, but it comes as an end to end set, including flared sections, unions, clamps and flexible sections, and moreover is the same set as the TSSC store sells, albeit 10 quid cheaper were I a member, so Im thinking its good quality.Hadn't spotted the Paddock kit, I'll look into that.Nick, microbore 8mm is another option. Would I struggle get the 1/4" bore flexible sections to go over the ends?cheers Quote Link to comment Share on other sites More sharing options...
WIMPUS Posted January 31, 2016 Share Posted January 31, 2016 They normally make the copper/kunifer pipes in several diameters.So also 8mm (what is under my car - still the original steel line). Quote Link to comment Share on other sites More sharing options...
Nick Jones Posted January 31, 2016 Share Posted January 31, 2016 6mm no problem though you may not be able to walk into your local DIY storeRandom ebay selection....http://www.ebay.co.uk/itm/VARI.....UMBING-/160862705272 £ 8.99 for 3m deliveredNick Quote Link to comment Share on other sites More sharing options...
efp Posted January 31, 2016 Author Share Posted January 31, 2016 Thanks Wim.I stand to be corrected, but I got the impression elsewhere that the pipe on the 1/2/3 was 1/4" and was changed to 5/16" on the Mk4 and 1500.Cant see it would do any harm to go 5/16" (8mm -ish) on my Mk2, but just thinking of the connections to flexible sections.JohnD, that alloy stuff looks good, but the unions are a bit pricey, and again, only in 8mmThat Paddock kit looks comprehensive and good value though, I'm leaning that way now..Cheers all Quote Link to comment Share on other sites More sharing options...
markythesparky Posted January 31, 2016 Share Posted January 31, 2016 I used copper gas pipe from a caravan it looks slightly thicker walled than from a plumbers ,flexible seems to rot quick with modern fuels. Quote Link to comment Share on other sites More sharing options...
efp Posted January 31, 2016 Author Share Posted January 31, 2016 Yeah Marky, apparently its the added ethanol in modern fuels that rots the flexi hose unless its internally coated to qualify for the 30R9 or 10 rating I mentioned in my first post (and again thanks to Clifty for his research on that).Trouble is, many suppliers of hose online don't or won't specify the rating on their hose, R6 or 7 won't last.I now know much more about fuel piping than is probably healthy, bless you all. Really need to get out more.. Quote Link to comment Share on other sites More sharing options...
yorkshire_spam Posted January 31, 2016 Share Posted January 31, 2016 To avoid rotting flexibles I imported some decent quality true 1/4" stuff from the USA. (Gates 27313)No good under EFI type pressures, but fine for carb systems: http://www.gates.com/products/.....etion-fuel-line-hose Quote Link to comment Share on other sites More sharing options...
ferny Posted January 31, 2016 Share Posted January 31, 2016 Mine's all 8mm copper. Gets a it tight getting flow, return and brake (don't use copper for brakes) through the chassis though. Support it with rubber lined P clips. Quote Link to comment Share on other sites More sharing options...
JensH Posted February 1, 2016 Share Posted February 1, 2016 Bought from Paddock last year for a mk 3 spitfire project, complete kit - in copper though - but came with R309 hoses and olives etc. Quote Link to comment Share on other sites More sharing options...
dinger Posted February 1, 2016 Share Posted February 1, 2016 one of the cheap flaring kits should do the ends Quote Link to comment Share on other sites More sharing options...
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