nick205
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| posted on 23/5/03 at 09:02 AM |
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Fuel pipes???
Easy question I'm sure.....
What dia./material metal pipes should I use for fuel and brake lines on an MK Indy with 2L Pinto?
Nick
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James
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| posted on 23/5/03 at 10:20 AM |
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Some rubber hose is need at each end- is there any reason not to use rubber hose the whole length of the car?
Cheers,
James
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SteveO
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| posted on 23/5/03 at 10:23 AM |
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I've just taken delivery of an MK Indy and got the 3/16" pipes for the brakes and bought 8.5mm flexi for the fuel from Burtons.
hope this helps.
Steve
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stephen_gusterson
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| posted on 23/5/03 at 10:28 AM |
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brake pipes are made from brake tubing (duh) thats available from most good motor factors.
Its not the right size for fuel. On my car things are 8mm O/D for fuel.
I originally used steel pipe for the long runs of fuel, but have changed my mind cos they went under the car, and were too close to my under the ar
exhaust (not a std lcost...).
The easiest way to run throu the tunnel was with rubber hose.
I got mine from europa spares - its not cheap.
about 3.50 / mtr for non efi, and 5.50 for efi. You may ned to double up on length if you need a fuel return, ala efi. I needed 7 mtrs or so.
Its supposedly bad to use copper for fuel as it can promote sludging in the copper pipes.......
atb
steve
[Edited on 23/5/03 by stephen_gusterson]
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David Jenkins
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| posted on 23/5/03 at 10:50 AM |
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I've used rubber hose on my car - bought it from Premier Wiring, an unexpected source, but fairly
cheap. It's proper stuff, with the correct markings and BS number printed on it.
The possible down-side is that you may get more petrol smells than you would with hard pipe, but that's not going to be an issue in my draughty
car! Apparently the smells can permeate through the rubber, eventually.
Some people use copper microbore heating pipe, which is 8mm od. Some people say the copper's a problem, but with a bit of research I found
reports that say that this only happens when the petrol's got a lot of sulphur in it - not a problem in the UK. There is also a risk that the
copper may work-harden and fracture, but I can't imagine that this would happen with our sort of use. Aluminium is a different matter, as that
work-hardens with age, as well as movement!
cheers,
David
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timf
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| posted on 23/5/03 at 10:52 AM |
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Runnig rubber hose the entire length is not a good idea. I ran a rally car which had steel braided petrol pipe through the cabin. after a good run
there was always a smell of fumes in the car which was because all rubber tubing will allow petrol vapors to pass through them. OK in an open top 7
you wouldn't smell them but as we all know its the vapor thats flamable so do you want to have the possibility of collecting this in the trans
tunnel.
i used the steel petrol supply line from the donor on the 1st locost i built.
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craig1410
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| posted on 23/5/03 at 11:16 AM |
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I'll be using steel pipe since corrosion shouldn't be a problem with the tunnel being partially enclosed. Ideally I want it with plastic
coating though if this can be purchased easily. I think steel is best since it doesn't let the fuel vapour through and is more compact and
easier to clip to the tunnel sides than rubber.
Cheers,
Craig.
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timf
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| posted on 23/5/03 at 12:05 PM |
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plastic coating
try plasti-dip
very good
http://www.frost.co.uk/acatalog/Index_Miscellaneous_16.html
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Jon Bradbury
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| posted on 23/5/03 at 01:10 PM |
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Try plastic fuel pipe
I was unable to get any copper or steel fuel pipe anywhare locally, so ended up with plastic fuel pipe. Its much easier to route than metal pipe. The
ends are terminated with short lengths of flexuble pipe that connect to the carb and fuel pump respectively.
Oh, and it is much thinner than braided pipe and alot cheaper.
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stephen_gusterson
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| posted on 23/5/03 at 01:11 PM |
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as the tunnel is open front and rear there would be a fair breeze going through it, so I dont recon there will be too much pooling or explosive
gas.
On he other hand, under the bonnet, where the hose has to be, isnt a good place to set of vapour.....
atb
steve
quote:
Originally posted by timf
Runnig rubber hose the entire length is not a good idea. I ran a rally car which had steel braided petrol pipe through the cabin. after a good run
there was always a smell of fumes in the car which was because all rubber tubing will allow petrol vapors to pass through them. OK in an open top 7
you wouldn't smell them but as we all know its the vapor thats flamable so do you want to have the possibility of collecting this in the trans
tunnel.
i used the steel petrol supply line from the donor on the 1st locost i built.
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paulf
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| posted on 23/5/03 at 08:28 PM |
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I bought 8mm copper from a heating supplier and paid less than £3 for a 3 metre length , I secured it with rubber lined p clips and dont expect any
problems with it.
Paul.
quote:
Originally posted by David Jenkins
Some people use copper microbore heating pipe, which is 8mm od. Some people say the copper's a problem, but with a bit of research I found
reports that say that this only happens when the petrol's got a lot of sulphur in it - not a problem in the UK. There is also a risk that the
copper may work-harden and fracture, but I can't imagine that this would happen with our sort of use. Aluminium is a different matter, as that
work-hardens with age, as well as movement!
cheers,
David
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Mark Allanson
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| posted on 23/5/03 at 08:38 PM |
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I'm going to turn over a fiat uno in the local scrappy, it has plastic fuel pipes which are an exact fit for my pinto injection system, and they
are a really pretty shade of blue (and have all the right numbers on them for mr sva man)
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Stu16v
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| posted on 24/5/03 at 04:47 PM |
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Just a quickie...
I'm guessing that the injection system runs with a fuel line pressure of around 45 psi, whereas the Fiat lines will have been designed to run
with around 3 psi ( if, in fact any pressure, as the fuel pump is probably on the engine, and therefore the line is running in a slight vacuum). Will
they be up to the job?
Cheers, Stu.
Dont just build it.....make it!
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Mark Allanson
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| posted on 24/5/03 at 05:19 PM |
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The later fiat uno's run single point injection, the pipes seem to be the same thickness as the ford items
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Northy
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| posted on 24/5/03 at 05:31 PM |
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Does the fuel pipe have to have any numbers / standards on it?
I've just got 14 foot of nylon fuel pipe for less than £4 today, but no markings on it.
Graham
Website under construction. Help greatfully received as I don't really know what I'm doing! 
"If a man says something in the woods and there are no women there, is he still wrong?"
Built 2L 8 Valve Vx Powered Avon
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Stu16v
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| posted on 24/5/03 at 05:43 PM |
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quote:
The later fiat uno's run single point injection, the pipes seem to be the same thickness as the ford items
I'll get my coat....
Dont just build it.....make it!
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Peteff
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| posted on 24/5/03 at 06:54 PM |
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8MM copper heating pipe with an inline filter before the pump, copper brake pipe for the return pipe. Standard 2.0 pinto pump.
yours, Pete.
yours, Pete
I went into the RSPCA office the other day. It was so small you could hardly swing a cat in there.
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Mark Allanson
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| posted on 24/5/03 at 09:27 PM |
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74324-rohr8x1-12/92-12 30--e-7558403/1--1028--r b460 tecaflex int ->pa12<-wlt-din
That is one seriously long number!!!!
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