alice
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| posted on 10/12/13 at 09:11 PM |
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fuel tank out let
Hi all can any one tell me is it ok to fit jubilee clips on a high pressure efi fuel return pipe to the fuel tank,TAZ
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mangogrooveworkshop
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| posted on 10/12/13 at 09:25 PM |
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You must flare the ends http://www.youtube.com/watch?v=omlIXsk-Y4k or solder olives on the ends of the hard pipe
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NigeEss
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| posted on 10/12/13 at 09:37 PM |
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Isn't the return line low pressure ?
In which case jubilee clips will be fine.
Time is an illusion. Lunchtime doubly so.................Douglas Adams.
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big-vee-twin
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| posted on 10/12/13 at 09:48 PM |
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Return pipe is open to atmosphere, but still flare the ends- belt and braces!
Duratec Engine is fitted, MS2 Extra V3 is assembled and tested, engine running, car now built. IVA passed 26/02/2016
http://www.triangleltd.com
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adithorp
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| posted on 10/12/13 at 10:19 PM |
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...but don't use Jubilee (worm drive) clips on fuel lines (or any small diameter hose). The screw section is fixed radius and causes 2 pinch
points that leak. It's an easy way to fail IVA. You want fuel pipe clips like
THESE
"A witty saying proves nothing" Voltaire
http://jpsc.org.uk/forum/
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britishtrident
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| posted on 10/12/13 at 11:33 PM |
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Use the correct clips of right sized but as long as you are not using silicone hose you don't need any kind of flare or barb on a low
pressure hose.
Millions of cars with SU and Stromberg carbs didn't have any kind of barbs on the fuel pipe connections and never had any problems.
Silicone hose tends to slip off because it has a lower coefficient of friction, old fashioned rubber style hose tend to stick to the stub pipe.
[I] “ What use our work, Bennet, if we cannot care for those we love? .”
― From BBC TV/Amazon's Ripper Street.
[/I]
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SteveWallace
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| posted on 12/12/13 at 10:49 AM |
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Just a quick reality check question...
Is everyone really using flared or olive connections on their standard rubber EFI fuel hose connections (say from tank stub to hose or from hose to
metal fuel line)? I just push fitted mine (very tight fit) and then clamped with the correct clamps. I changed a couple the other day as I was
rerouting the fuel lines and, even after removing the clips, the only way that I could get the hose off the stubs was to cut it off.
How much force can you exert with a good tug (oo err missus) compared to the internal pressure when the fuel pump is running?
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alice
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| posted on 14/12/13 at 11:16 AM |
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well that started something
Well that started some thing thanks for all your advise .taz
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CosKev3
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| posted on 14/12/13 at 03:42 PM |
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quote:
Originally posted by britishtrident
Use the correct clips of right sized but as long as you are not using silicone hose you don't need any kind of flare or barb on a low
pressure hose.
Millions of cars with SU and Stromberg carbs didn't have any kind of barbs on the fuel pipe connections and never had any problems.
Silicone hose tends to slip off because it has a lower coefficient of friction, old fashioned rubber style hose tend to stick to the stub pipe.
Silicone hose should not be used for fuel/oil anyway,as it breaks down.
Unless its the expensive flourosilicone lined hose 
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