psaleh
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| posted on 17/2/08 at 12:29 AM |
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Fuel Lines
Managed to crush the MNR supplied one in the 'cheap' pipe bender I've been using so tried some microbore from b&q. This stuff
seems very weak and kinks very easily. I'm going to be running a carb'd r1 engine so was wondering what others had doen in terms of fuel
pipes here.
Main questions are :-
Was thinking about using braided hoses instead as theres quite a lot of bending involved. Anyone done this? Advice, recommendations?
Is Kunifer better then Microbore? If so how easily does it bend? Best methods for using it?
Thanks in advance.
BLOG => http://mymnr.blogspot.com/
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Mr Whippy
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| posted on 17/2/08 at 02:19 AM |
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I used microbore for the houses heating. Don't like it much, if your happy with the extra cost use braided.
Fame is when your old car is plastered all over the internet
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martin1973
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| posted on 17/2/08 at 09:44 AM |
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i used gas pipe from the local caravan shop 5/8 or 7mm size.
easy to bend dosent kink so easy as its softish.
martin
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graememk
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| posted on 17/2/08 at 09:51 AM |
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i also used gas pipe.
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billynomates
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| posted on 17/2/08 at 10:16 AM |
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There was a post about this ealrlier this week. Think the recomendation was kunifer.
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Bigheppy
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| posted on 17/2/08 at 10:17 AM |
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It is true to say that 8mm copper is soft and easy to bend. But to ensure no kinks on tight bends in our applications, an external bending spring is
required. Slip it over the pipe and form the bend slightly further than required then open up to the correct size and the spring can then be moved to
the next position where a bend is required. These types of spring have an advantage over a tube bender as the bends can be done with the pipe in
place. With practice and strong thumbs bends with a radius of 20mm are acheivable. 
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billynomates
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| posted on 17/2/08 at 10:21 AM |
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http://www.locostbuilders.co.uk/viewthread.php?tid=82570
It was to do with brake lines actually, not fuel lines.
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TimC
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| posted on 17/2/08 at 10:26 AM |
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Braided hose seems to be standard kit on Mac#1s so I took their lead. Same engine as you by the way - not that it makes a lot of
difference.
 
Rescued attachment Picture 002.jpg
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RazMan
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| posted on 17/2/08 at 02:32 PM |
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Personally I would go for braided as it is not only protected from debris damage but also remains flexible and you can crimp on the correct fittings
for the job making it look more professional.
Cheers,
Raz
When thinking outside the box doesn't work any more, it's time to build a new box
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robinj66
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| posted on 17/2/08 at 03:51 PM |
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nothing wrong with braided fuel hoses but you will have to be able to satisfy the SVA tester that the hoses are fit for purpose (ie, carrying fuel)
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finlay
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| posted on 17/2/08 at 06:09 PM |
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i wish i used braided instead of copper, infact i might change it while i still can
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psaleh
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| posted on 17/2/08 at 10:54 PM |
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Thanks guys, looks like its braided hoses with proof for SVA. I would use copper but I dont like the idea of laying everything down and then kinking
the pipe whilst trying to carry out another job.
Any advice on where I can get some braided hoses with the relevant proof for SVA compliance?
BLOG => http://mymnr.blogspot.com/
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bassett
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| posted on 18/2/08 at 12:18 AM |
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Me and my dad set about this fun job at the weekend. Using the pipe MNR supplied we pushed thick cable through the pipe to bend it without kinking. In
really tight areas we made the bends with fuel hose, flared the ends and held them on with jubilee clips.
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bobs bangers
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| posted on 18/2/08 at 12:34 AM |
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Just a question what "proof " is required for sva ? This is my first build so sorry if that's a stupid question.
Regards
Bob
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RazMan
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| posted on 18/2/08 at 08:44 AM |
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quote:
Originally posted by bassett
we made the bends with fuel hose, flared the ends and held them on with jubilee clips.
A word of caution here - some testers frown on jubilee clips used on fuel pipe. Far better to use proper fuel pipe clips as they can't pinch the
pipe causing leaks.
Cheers,
Raz
When thinking outside the box doesn't work any more, it's time to build a new box
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RazMan
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| posted on 18/2/08 at 08:47 AM |
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quote:
Originally posted by bobs bangers
Just a question what "proof " is required for sva ?
When you purchase the fuel pipe (flexible stuff anyway) you should ask for a specification sheet which states that it is suitable for use with petrol.
Mr SVA won't question it then.
Cheers,
Raz
When thinking outside the box doesn't work any more, it's time to build a new box
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bobs bangers
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| posted on 18/2/08 at 10:04 AM |
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Thanks razman
I can still alter my spec on things like that as the kit isn't due till early March.
Will go braided then.
Regards
Bob
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bassett
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| posted on 18/2/08 at 02:04 PM |
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I suppose they could but if it fails it shouldnt be too hard to replace. What sort of clips would you recommend?
Adam
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