Classic cars forum & vehicle restoration.
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Roger-hatchy

Joined: 07 Dec 2007 Posts: 2135 Location: Tiptree, Essex
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Posted: Thu Feb 21, 2013 9:34 am Post subject: Lagging fuel lines |
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Following on from my post about a manual control over the cooling fan for when stuck in traffic for extended periods.
Lagging fuel lines?
What is the best way, material wise, to lag the fuel lines in the engine bay.
Is there a recognised way, I have seen some vehicles that have been done and some look very Heath Robinson affairs.
Do I just raid the larder for the cooking foil or buy something dedicated for the job.
Thanks in anticipations for any suggestions
Roger |
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peter scott

Joined: 18 Dec 2007 Posts: 7215 Location: Edinburgh
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Posted: Thu Feb 21, 2013 10:02 am Post subject: |
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Hi Roger,
I know this is not what you are asking but I'm told that putting the fuel pump at the tank improves vapourisation because the fuel in the line is under pressure rather than suction.
Peter _________________ https://www.nostalgiatech.co.uk
1939 SS Jaguar 2 1/2 litre saloon |
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Rick Site Admin

Joined: 27 Apr 2005 Posts: 22811 Location: UK
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Posted: Thu Feb 21, 2013 11:15 am Post subject: |
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I was going to lag the rubber fuel pipes under the bonnet of the truck, but then I found some stainless steel braided line, and bought a length of that, cut it down to size, and replaced each of the black rubber hoses with this instead. I also bought some of the white pipe lagging material, which I may use on the exhaust downpipe sometime, to try and keep the under-bonnet heat down a little.
RJ _________________ Rick - Admin
Home:https://www.oldclassiccar.co.uk
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Roger-hatchy

Joined: 07 Dec 2007 Posts: 2135 Location: Tiptree, Essex
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Posted: Thu Feb 21, 2013 12:41 pm Post subject: |
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Hi Peter
The fuel pump is at the rear and just below the fuel tank, about 6 inch feed pipe, so is gravity fed, then a 9 foot run to the cut of switch, then about 18 inches to the carbs.
Hi Rick
I was never sure about the braided pipes,
Might give that a go, was thinking of replacing the flexible pipes, not 100% sure if they are unleaded friendly so for peace of mind etc.
So thats part one.
Lagging the exhaust, might have a go at that as well as I have a feeling that might be part of the problem, and a heat sink between the manifolds might not be amiss, can access aluminium plate, cut offs from a friends place of work.
Already made some 1/4 inch spacers from bakerlite a few year ago, stopped the carbs from coocking, they used to get so hot you couldn't touch them.
Thanks for ideas, nice to be able to 'Think aloud', so to speak, on this forum.
Roger |
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