Jasper
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| posted on 25/11/02 at 02:49 PM |
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Wot fuel pipe?
Is there any reason not to use flexible black fuel pipe for the whole length? What is the necessity for using rigid pipe??
And any recommendations for good quality pipe, either flexible or rigid.
Do I need those expensive/better clips for each end, or will jubilee's do?
[Edited on 25/11/02 by Jasper]
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jollygreengiant
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| posted on 25/11/02 at 03:30 PM |
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wot fuel pipe
From a personal aspect I would use metal fuel pipe every time over plastic.
However the personal chioce has to be your own, unless SVA has anything to say on it.
Modern fuel tanks tend to be better in plastic than metal ones and I for one had a plastic bumper wear a hole in a metal fuel tank!.
On the other side of the coin it will be easier to create a Good, fuel tight, seal when joining rubber hose on to metal pipe rather than plastic.
Also when a metal pipe has been properly shaped & clipped into position then it will tend to stay in place better than a plastic hose, especially if
any of the clips should fail.
Should the fuel pipe be subject to excess heat then a metal pipe would give better protection against failure.
Finally if you are using a fuel injection system then you WILL require metal pipe & appropriate fittings to give an adequate pressure (up to 20bar I
believe) proof jointing in the fuel rail supply feed at least.
The only fluid which is more volatile than petrol that you will commonly find on you car is brake fluid, which if it comes into contact with a hot
exhaust pipe WILL AUTO COMBUST (without a spark & hence the need for retainers on brake fluid reservoirs) where as petrol will merely vapourise and
evaporate.
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stephen_gusterson
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| posted on 25/11/02 at 04:27 PM |
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I have heard of cars failing cos they didnt use proper pipe clips.
Some say you can use jubillee clips, and you might get lucky and pass on those.
The proper clips look like a jubilee, but has a part that passes under the clip - you can see them in halfords - they sell packs of 1 mtr pipe and 2
clips for 8 quid!!!!
I bought mine from europa, and im pretty sure that vehicle wiring product can help too.
I used steel pipe under the car - 3 off 2 mtr lengths at about 3 quid each (min qty) from farnell.
you can order on line - almost impossible to find number on line - shout if you need it.
Dont use copper - its supposedly promotes sludging.
atb
steve
quote:
Originally posted by Jasper
Is there any reason not to use flexible black fuel pipe for the whole length? What is the necessity for using rigid pipe??
And any recommendations for good quality pipe, either flexible or rigid.
Do I need those expensive/better clips for each end, or will jubilee's do?
[Edited on 25/11/02 by Jasper]
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wicket
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| posted on 25/11/02 at 09:54 PM |
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Probally going to use Krontec tube available from DT £1-89/metre for 8mm. Its drawn al.alloy tube coated on the outside with polyamide, 360 bar burst
pressure, 11mm min bend rad. Fittings available. Connecting to the tank and engine with Goodridge or similar flexible connections. Going to run the
pipe through the cockpit on the drivers side; checked with the SVA help desk on this & OK'd as long as its secure & run in a safe position,
preferably without joints & protected where it passes through the bulkheads.
The SVA engineer also said thats its a good idea when going for SVA to have some documentary details of the pipe and fittings used.
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David Jenkins
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| posted on 26/11/02 at 09:15 AM |
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I have used 'rubber' fuel pipe all the way through (it's not rubber, it's some form of thick bendy plastic, but nevertheless...)
I used this simply because I had enought trouble getting the thin brake pipes through the tunnel, and didn't fancy doing the same with 8mm copper
tube!
As for details of the tube used, mine's got 'BS petrol' written all along its length.
rgds,
David
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