madteg
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| posted on 20/7/06 at 06:01 PM |
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copper petrol pipe
is copper ok or what should i use?
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fesycresy
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| posted on 20/7/06 at 06:17 PM |
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microbore is fine
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The sooner you fall behind, the more time you'll have to catch up.
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iank
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| posted on 20/7/06 at 09:02 PM |
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There was some concern (from a fuel system professional IIRC) that the copper could leach out over high mileages (>100k?) and block the
injectors.
So probably not a real problem for a fun car, and most people have used it without obvious hitches.
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wilkingj
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| posted on 20/7/06 at 09:33 PM |
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I used 8mm microbore central heating tube, and covered it with split convoluted tubing to protect it.
Got through the SVA OK.
1. The point of a journey is not to arrive.
2. Never take life seriously. Nobody gets out alive anyway.
Best Regards
Geoff
http://www.v8viento.co.uk
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JoelP
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| posted on 20/7/06 at 09:38 PM |
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ive seen a lot of rubber pipe perish, so i would personally prefer copper in the long run. Seems more durable.
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RazMan
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| posted on 20/7/06 at 10:16 PM |
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Apparently the Kunifer pipe is stronger than the usual brake pipe - that's what I used to link my twin tanks.
Cheers,
Raz
When thinking outside the box doesn't work any more, it's time to build a new box
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DIY Si
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| posted on 20/7/06 at 11:08 PM |
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As said, kunifer pipe is best as it's stronge than plain copper. Also, copper pipe is only supposed (I think) to be single use. IE if you ever
unscrew a union, that pipe should be changed. Can't rememebr where I heard this, so might be complete rubbish.
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David Jenkins
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| posted on 21/7/06 at 07:51 AM |
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quote:
Originally posted by iank
There was some concern (from a fuel system professional IIRC) that the copper could leach out over high mileages (>100k?) and block the
injectors.
So probably not a real problem for a fun car, and most people have used it without obvious hitches.
I did some Goolge research on this - it seems that the only real problem is where the car is used with low-grade petrol that contains a lot of sulphur
(you won't find this in the UK). Eventually the fuel system get clogged up with copper sulphate/sulphide or something like that.
David
[Edited on 21/7/06 by David Jenkins]
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iank
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| posted on 21/7/06 at 08:44 AM |
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Just for completeness here is the thread I was talking about.
http://www.locostbuilders.co.uk/viewthread.php?tid=44395&page=2
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andyace
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| posted on 21/7/06 at 10:30 AM |
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quote:
Originally posted by fesycresy
microbore is fine
Is there a difference between normal copper plumbing pipe from b and q and microbore. What I am asking really is what is microbore?
I ask coz I want to pop out today and get some 8mm copper pipe and don't want to get the wrong stuff, does it come in straight lengths or in a
roll?
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David Jenkins
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| posted on 21/7/06 at 10:40 AM |
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Usually comes in a roll about 500mm across. As far as I know, if you find 8mm copper pipe rolled up in B&Q, it's microbore and it's
the stuff you need.
David
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David Jenkins
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| posted on 21/7/06 at 10:54 AM |
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Out of interest (and vaguely on topic) - what are the alternatives to copper?
I currently use rubber fuel pipe, but I am getting concerned about the surface cracking I'm seeing, especially at the back where it's
exposed to road muck.
I have seen people with plastic-coated aluminium pipe, but I wouldn't trust alu. pipe for fuel as it work-hardens and is likely to fracture (or
am I being paranoid?)
Braided hose is expensive. Pretty, but expensive.
Can you get plastic hose designed for petrol lines?
David
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timf
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| posted on 21/7/06 at 11:50 AM |
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you can get plasic pipe designed for petrol
just look under a ford xr3i but never found anyone who sells it on a roll
A prisoner of war is a man who tries to kill you and fails, and then asks you not to kill him."
- Sir Winston S. Churchill, 1952
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robertst
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| posted on 22/7/06 at 12:01 AM |
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sorry... so copper microbore pipe and whatnot is also suitable for the braking system? i had the notion that it was not allowed by sva or that kunifer
was the only real thing suitable for braking...
people in motor factors here tell me that it's ok to use copper for the braking system...but i give them the eeevil eye
Tom
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iank
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| posted on 22/7/06 at 07:32 AM |
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quote:
Originally posted by robertst
sorry... so copper microbore pipe and whatnot is also suitable for the braking system? i had the notion that it was not allowed by sva or that kunifer
was the only real thing suitable for braking...
people in motor factors here tell me that it's ok to use copper for the braking system...but i give them the eeevil eye
The copper microbore that is being talked about is used for plumbing in central heating systems and is NOT suitable for brakes.
You can use suitably rated copper pipe for brakes, but it's an inferior material to Kunifer. Kunifer is a copper alloy which is harder and
doesn't suffer from work hardening (like pure copper or aluminium).
[Edited on 22/7/06 by iank]
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Schrodinger
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| posted on 26/7/06 at 11:15 AM |
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I have used plastic pipe in a Tiger Cat the fittings were basic brass compression fittings and the pipe came from a local (Ipswich) HGV factors
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