Mark Allanson
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| posted on 10/5/07 at 08:48 AM |
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Fuel tank reassurance
When I first made my fuel tank, I built in an antisyphon device into the filler head on the tank itself. Ideal - No! I made it very difficult to fill
- first job post SVA I said, so I did it yesterday (2 years after the test!).
The tank is made of 18g steel and at the time there was a lot of discussion on how long a steel tank would last before rusting from the inside, so
while cutting out the drilled plate, I had a look inside the tank with my LED torch and the inside was still shiney, not a speck of corrosion - Nice
to know if you are contemplating making your own tank
If you can keep you head, whilst all others around you are losing theirs, you are not fully aware of the situation
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02GF74
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| posted on 10/5/07 at 08:59 AM |
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providing you never leave it empty, the petrol should vaporise (is that the right word?) and push out all the air over time - isn't it the oxyen
and water in air that casues it to rust.
Pretty sure my Land Rover tank is mild steel inside, no coating and that is 33 years old 
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Bluemoon
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| posted on 10/5/07 at 09:18 AM |
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Yep Steel's fine, as said above been used for years in production cars..
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TGR-ECOSSE
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| posted on 10/5/07 at 09:24 AM |
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Pretty sure my Land Rover tank is mild steel inside, no coating and that is 33 years old
Must be the only thing thats not leaking on a 33 year old land rover
We have seen with stock car tanks that they rust inside if left empty but if left with petol inside they are ok.
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Mark Allanson
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| posted on 10/5/07 at 09:39 AM |
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I wanted to make it steel for the rear crash resistance, I wanted the tank to bend rather than tear like ally
If you can keep you head, whilst all others around you are losing theirs, you are not fully aware of the situation
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britishtrident
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| posted on 10/5/07 at 10:22 AM |
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A good way of prevent tanks splitting is to cover the outside in fibre glass, used to be recommended in the MSA Blue Book.
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craig1410
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| posted on 10/5/07 at 12:16 PM |
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Rusting from the inside is often caused by water accumulating at the bottom of the tank. If you have a swirl port then this will be naturally drawn up
to the carbs and shouldn't build up to any extent. If you don't have a swirl pot then I would recommend draining the tank every year or
two to purge any water. Remember that water will always sit at the lowest point as it is heavier than petrol.
That's what happened to my Rover 800 which started to leak just after I had put 68 litres of fuel in it... That was a fun evening!
Cheers,
Craig.
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Black Cat
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| posted on 10/5/07 at 08:28 PM |
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Fuel tank filler position
Hi,
I'm building a Tiger Avon and thinking about repositioning the filler neck stub from the top of the tank to the side of the tank, thus keeping
the boot area completly free from the fuel pipe.
Is there any SVA requirements or reasons why it can't be done this?
Steve
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DIY Si
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| posted on 10/5/07 at 10:05 PM |
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It can be done, but you'll spend all week filling it up!
“Let your plans be dark and as impenetratable as night, and when you move, fall like a thunderbolt.”
Sun Tzu, The Art of War
My new blog: http://spritecave.blogspot.co.uk/
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