Fuel pipes

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Fuel pipes

Postby okkie on Tue Nov 30, 2010 2:16 pm

Hi guys, what are you using for fuel lines? Can copper tubing (aircon tubing) be used, or is there a danger in doing this?
Thanks for any input.

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Re: Fuel pipes

Postby craigsez on Tue Nov 30, 2010 7:43 pm

Sheesh,

Maybe someone else knows more, but fuel piping is generally 6mm or 8mm with a wall thickness thats thick enough to prevent collapsing when you bend it to fit the chassis. So as long it meets those requirements I cant really see why not myself. I dont recall that buying the purpose made stuff was expensive though? do you already have aircon tubing lying around or is it cheaper to buy than fuel line? If not i'd just use the stuff made for that purpose...

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Re: Fuel pipes

Postby ross on Tue Nov 30, 2010 9:55 pm

In the past copper pipe was the material of choice for fuel lines. A guy I knew when I was an appy had a Silvestone Healey that had a 3 inch copper exhaust pipe, sounded great. I digress, the only area of concern is that historically copper fuel lines were made from almost pure copper; whereas, today the copper pipes / tubes are typically made from a copper based alloy, which almost certainly contains tin
With modern fuels there is maybe a possibility that the sulphur in the fuel could react with the copper alloy. Floats in carbs used to be made from brass and when these were exposed to modern fuels they disintegrated due to stress corrosion, that was a result of an adverse reaction between the tin, in the brass, and the sulphur in the fuel. Personally, I would only use Bundy tubing for the fuel lines, as Craig says it's not that expensive. Just my opinion.
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Re: Fuel pipes

Postby okkie on Wed Dec 01, 2010 10:14 am

Thanks for that, Ross.

Is Bundy tubing available in 8mm or what size are you using, since I also have a 20v motor?

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Re: Fuel pipes

Postby ross on Wed Dec 01, 2010 11:21 am

Hi Okkie,
Bundy tubing comes in all sorts of sizes and 8mm (5/15") and 6mm (1/4") are certainly available. I used 8mm for the supply and 6mm for thr return to the tank.
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Re: Fuel pipes

Postby Garreth on Mon Aug 19, 2013 7:29 pm

Digging up an old thread here....

Where do you guys get fuel line connectors and adapters, the pipe to pipe ones?
If I can't get I will need to turn up something on the lathe.

Cheers
Garreth
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Re: Fuel pipes

Postby ross on Thu Aug 22, 2013 9:06 am

Hi Garreth,
You can get compression connectors from your local hydraulics guy, they will also be able to supply the Bundy tubing you need. If you want to solder the joints then, if you're lucky, you may be able to use the next size up Bundy tube as a slip connector, otherwise you'll have to machine something to fit. Use silver solder on the joints not soft solder like plumbers use, that'll just crack after a while.
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Re: Fuel pipes

Postby BradW on Thu Aug 22, 2013 9:29 am

Garreth wrote:Digging up an old thread here....

Where do you guys get fuel line connectors and adapters, the pipe to pipe ones?
If I can't get I will need to turn up something on the lathe.

Cheers
Garreth


Hi sorry for not replying earlier we have custom made pipe adapters in stock as below

16mm - 12.5mm - R 42
12.5mm - 10mm - R 39
10mm - 8mm - R 35

All prices including VAT

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Brad
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Re: Fuel pipes

Postby Garreth on Fri Aug 23, 2013 8:28 am

Ok great will need to re-measure my tubes and get lengths then will sort this out.

Just a quick one,
The 12mm ID rubber hose costs around R150 a meter from the one shop I went to... is this reasonable or are there cheaper options?

Cheers
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Re: Fuel pipes

Postby BuzzFuzz on Fri Aug 23, 2013 8:53 am

R150/m for fuel hose sounds excessive... VERY!!

Midas and Autozones will have fuel hoses and I'm 99% sure it will cost far less than that. I cant remember what I paid but it was cheaper than that. :lol:
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Re: Fuel pipes

Postby Garreth on Mon Aug 26, 2013 9:35 pm

Thanks Brad, but I found some brass round bar lying around at home so just turned up some adapters.

I found some fuel pipe at THC, (mentioned this place in other posts).

They also stock the 38mm ID fuel filler pipe. This makes life a lot easier for guys wanting to use existing tanks like myself. Saves having to convert and weld up a larger 50mm pipe for the hose you get at Midas etc.

They stock a 5/8" fuel pipe as well which Midas and the likes don't stock. I needed about a 100mm of it for the return inlet on my tank.

For the guys who want to know.....

The Hydraulic Connection
Anvil Road Roodepoort. ( Stormill Area)

There is a branch in Pretoria just google it.

Hope this helps
Cheers
Garreth
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