OK - fuel line sizes/lengths question

[davidindevon]

Right Chim fuel tank is out and everything cleaned. As I thought, pipes from tank to pump and also the return pipe behind the tank are old and showing signs of degradation.

The feed pipe looks about 12mm ID. The return looks about 10mm ID.
Is that correct?

Also, what length of pipe will I need to do the whole lot including in the engine bay (they have been replaced by PO but again unmarked and just noticed some signs the front pipes are being affected by heat)

What replacement fuel lines are preferred by folks and where is best supplier as I'll need to get something ordered up. There are no markings on the pipes.
Many thanks

[carsy]

From the tank is 12mm. Pretty sure the rest is 8mm i/d.

[Aussie John]

On mine is 12mm from tank to pump then 8mm to engine and return; I am about to change mine and the one I think is suitable should be marked SAE J30 R9. Maybe someone in the know can confirm this.

[davidindevon]

OK cheers, 12mm feed and 8mm return.
I can see now what I need lengthwise for the feed from tank to the pump and the last bit of return back to the tank.

Any idea of the lengths from the pump to the engine and return from the engine??

I've seen SAE J30 R9 but the supplier says they only sell it in six inch lengths There is I believe R10 as well.

Again any known suppliers that people on the forum have used please?
Thanks.

[Sardonicus]

carsy said:

From the tank is 12mm. Pretty sure the rest is 8mm i/d.

Gates/Codan/Sytec etc are good brands of EFI hose

[davidindevon]

Hi yes, that's manufacturers which come up on my search engine OK (together with loads of specs etc) but SUPPLIERS seem to like to be very elusive.
Cheers.

[Alexdaredevils]

I got -8 an going from tank to fuel rail

[Sardonicus]

davidindevon said:

Hi yes, that's manufacturers which come up on my search engine OK (together with loads of specs etc) but SUPPLIERS seem to like to be very elusive.
Cheers.

http://www.ebay.co.uk/itm/FUEL-INJECTION-HOSE-BLACK-RUBBER-NITRILE-8mm-ID-1m-/360305717576

[jod]

Hi,
If you check out my last post all the info is on there if i remember correctly.
I replaced the lot and pipework aswell.
Cheers

[Colin RedGriff]

Demon Tweeks supply fuel hose if you need a supplier. I bought their high pressure fuel hose a few years back for the engine bay, approved for unleaded. Will be doing the fuel tank hoses this winter with the same stuff

[SILICONEKID343HP]

Be carful with the connection on the tank ,its rubbish . If I had the tank out again I would have a proper ribbed connector welded in .

[davidindevon]

Hmm, it's strange you mention that because I had another look at the tank connections to-day and thought the connection of the feed pipe to the tank wasn't wonderful, particularly with a well rusted jubilee clip although it doesn't take any pressure at that point. Probably will weld on a Sytec type connection with LMA clip for a leak free future. I'm not sure about SS all the way.

I've emailed Advanced Fluid Solutions in Essex and Automotive Fuel Hoses in Royston and Demon Tweeks enquiring about R9 EFI hoses/clips etc on Thursday morning and not a dicky bird yet. Will wait patiently.

Thanks for the trickle of useful information and ideas coming out on this one.

[Aussie John]

The SAEJ 30 R9 is OK with ethanol added fuel; petrol suppliers can add maybe 5% ethanol to their fuel without having to declare it so you may be using it without knowing. [ This is as I have been told ]

[roseytvr]

Be aware if you have aircon the pipework to the cooler is slightly smaller - 7mm id on mine.

[davidindevon]

I've measured the length of the return pipe from the back of the tank to its first connection point against the rear chassis rail as 600mm long.(marked odd size of 7mm)

The feed from the tank to the pump is just two short pieces of about 100mm length with the copper piece in between. (12mm but no-one I've spoken to yet does that size!)

Now my real question is.... does anyone know anything about the hoses which run from the roll over valve in the boot to the carbon cannister and/or back to the filler neck or inlet manifold? Are they one long line or are they jointed and if so where? (I don't have the luxury of a ramp)
Lastly, would it not be possible to join the hoses in the boot and make the connections to and from the carbon cannister redundant? (It's a pre-cat engine)
Thanks again

[roseytvr]

davidindevon said:

The feed from the tank to the pump is just two short pieces of about 100mm length with the copper piece in between. (12mm but no-one I've spoken to yet does that size!)

Now my real question is.... does anyone know anything about the hoses which run from the roll over valve in the boot to the carbon cannister and/or back to the filler neck or inlet manifold? Are they one long line or are they jointed and if so where? (I don't have the luxury of a ramp)
Thanks again

I will check out where I got my 12mm pipe from when I get home tonight, I thought it was Demon Tweaks but may be wrong. The hoses to and from the carbon canister are not joined, at least they wernt on mine when I took them out.

[davidindevon]

Hi Roseytvr,
So the hoses from the boot to the carbon cannister were one piece? No joins? Any idea how long that was when you did it?

I'm waiting a call back from DT but I'm finding other suppliers are very happy sell me hoses and saying 'yeah it'll be fine' yet there's no markings on their hoses or if there is it's R6 and nothing to indicate suitability for high pressure applications.
I'm just very windy about doing this job with 'fish pond' pipes.
Cheers.

[SILICONEKID343HP]

davidindevon said:

Hi Roseytvr,
So the hoses from the boot to the carbon cannister were one piece? No joins? Any idea how long that was when you did it?

I'm waiting a call back from DT but I'm finding other suppliers are very happy sell me hoses and saying 'yeah it'll be fine' yet there's no markings on their hoses or if there is it's R6 and nothing to indicate suitability for high pressure applications.
I'm just very windy about doing this job with 'fish pond' pipes.
Cheers.

Junk it and fit small K&N air filter (breather) ,then terminate it at the side of the diff .There no good to anyone with an after market ecu.

[Tyre Tread]

davidindevon said:

Probably will weld on a Sytec type connection with LMA clip for a leak free future. I'm not sure about SS all the way.

Welding petrol tanks.

Be careful. A local garage owner killed himself doing just that.

[davidindevon]

Getting no-where fast! I contacted DT, very polite and helpful but they don't stock or supply what's needed.

I've found some info on R9 - see the attached, but so far I've been unable to find any supplier and those local to me have never heard of R9.
Any ideas please?
Ta.