Sumo Fuel outlet size

[Don350]

Hi Ken,
Sorry for delay in replying. As you can't remove the tank, drilling a hole in the bottom with the risk of a spark from drilling, is probably not the safest option. I find that I am able to siphon out the fuel quite easily, as the tank sits so high, into some jerry cans. This then brings out any old rubber bits from an old non-petrol proof seal I once used. Then refilling the tank from the jerry cans through a funnel with a filter. This catches all the bits nicely. I also have two inline fuel filters, one between the tank and the pump and another in the engine bay as part of a pressure regulator, these seem to catch everything. However, I don't know that any filter will stop a solid that has been dissolved into the liquid, as the filter will just pass the liquid. It seems the issue is that the fuel just sits there while our cars are not used, I too have had this problem.
I've just SORN'd our Cobra and I've put in a container of Millers Tanks Safe and topped up with E5. I've done this before over the winter and not had any problems as I believe the Tank Safe "Kills off" the Ethanol. I wish I'd done it more regularly, particularly last winter.
I hope you're making some progress and avoiding selling the Cobra.
Regards, Don

[Ken]

OK so I have to flush the rubbish remains of the E10 out of the tank after I drained it via the fuel pump. But I'm sure there is still some old fuel in there and I need to get rid of it.
I cannot remove the tank. I have some physical problems which negate that.
So I have 2 options, either flush it with good E8 fuel several times, or drill a hole in the very bottom of the tank then seal it up with a bung of some description.

Any suggestions.

[Ken]

Well I seem to have found the problem. Before sending the carb off for servicing I decided to take a quick peek so removed the two metering rods and was shocked at what I found. Both rods were completely covered with a thick black material which on closer inspection turned out to be rubber !
It would seem to be the result of putting a few gallons of E10 fuel into a near empty fuel tank on my last run out, as the garage did not have E8. Car was sitting for a few weeks whilst I was in hospital and when returning fired it up but it ran rough. A few days later it wouldnt start at all unless I poured fuel into the top of the carb. It would seem that the E10 fuel had either rotted or dissolved the rubber fuel hoses between the pump and carb. I had a filter between the Pump and tank but it didnt look too bad. So its a warning for everyone. Dont use E10 because even with some of the alleged E10 fuel fixes they dont work. If I find how to post a pic I have a pic of the metering rods.
Now to flush the fuel tank out and replace the fuel lines with E10 resistant hoses.

And I know I was going to sell it but I just didnt have the heart as its so much fun

[Ken]

Well I seem to have found the problem. Before sending the carb off for servicing I decided to take a quick peek so removed the two metering rods and was shocked at what I found. Both rods were completely covered with a thick black material which on closer inspection turned out to be rubber !
It would seem to be the result of putting a few gallons of E10 fuel into a near empty fuel tank on my last run out, as the garage did not have E8. Car was sitting for a few weeks whilst I was in hospital and when returning fired it up but it ran rough. A few days later it wouldnt start at all unless I poured fuel into the top of the carb. It would seem that the E10 fuel had either rotted or dissolved the rubber fuel hoses between the pump and carb. I had a filter between the Pump and tank but it didnt look too bad. So its a warning for everyone. Dont use E10 because even with some of the alleged E10 fuel fixes they dont work. If I find how to post a pic I have a pic of the metering rods.
Now to flush the fuel tank out and replace the fuel lines with E10 resistant hoses.

And I know I was going to sell it but I just didnt have the heart as its so much fun

[Don350]

As Kev has mentioned Pilgrim price for the tank is VERY expensive, considering what Jon has mentioned about other manufacturers. I was understanding from Ken's original question that he already had the Pilgrim tank, so would not want to buy another one. If I ever had to buy another tank, I'd look around the market for what is available and/or have one made to fit. The location of the Pilgrim tank means that gets a lot of vibration from the Diff and so needs to be mounted onto some vibration absorption material. I think I've post my woes about a previous tank installation on the forum some years ago.

[JON1D]

You could get an aluminium or stainless tank fabricated for less! There is a fuel tank manufacturer and supplier who does a wide range of tank sizes. Name escapes me at present.

https://www.compbrake.com/product/ac-cobra-classic-car-fuel-tank-with-sender-unit-black/

They do bis-poke worth a call.
 

[KevinW]

Hi,
Is your tank the one that Pilgrim have on their web site?
https://www.pilgrim-motorsports.co.uk/product/fuel-tank-70l-for-pilgrim-cobra-newly-improved-design/
Then it should be 8mm as already mentioned. The rubber pipe they sell is 8mm.
I replaced all my rubber hose with Teflon pipe from Speedflow, along with the associated fittings.
Best thing I ever did in the boot, no more fuel smell.
https://www.speedflowshop.co.uk/teflon-hose-stainless-steel-braided-2459-p.asp
Hope this helps.
Regards, Don

£828 + delivery for a steel box - that is an outrageous price.

[Don350]

Hi,
Is your tank the one that Pilgrim have on their web site?
https://www.pilgrim-motorsports.co.uk/product/fuel-tank-70l-for-pilgrim-cobra-newly-improved-design/
Then it should be 8mm as already mentioned. The rubber pipe they sell is 8mm.
I replaced all my rubber hose with Teflon pipe from Speedflow, along with the associated fittings.
Best thing I ever did in the boot, no more fuel smell.
https://www.speedflowshop.co.uk/teflon-hose-stainless-steel-braided-2459-p.asp
Hope this helps.
Regards, Don

[Ken]

Thank you

[Tony]

Isn't that the inlet?

Yes! My mistake, completely misread the question. Well spotted Kev. I'll adjust my answer above.

[KevinW]

It used to be 50mm, make sure you get fuel resistant hose though!

Isn't that the inlet?

[Tony]

It used to be 50mm, make sure you get fuel resistant hose though!


Forget the above, that's for the inlet as Kev states below. Can't remember th outlet but think it was 8mm.

[Ken]

Hi from Hospital !!
Can someone tell me the OD size of the fuel outlet pipe on the fuel tank please?
Trying to order stuff for when I escape.