Long Range Fuel Tank

there were small in- wing tanks that you could have with a 460 280 ge which was always a good idea as the car was so thirsty. However the filler neck is in a different position on the later 463 cars so it would not be much use to you, why not use 20 litre jerry cans with a funnel or one of the purpose made spouts.

i think that the one david has is about 90litres roughly, so i reckon you could comfortably do 70 and still go off-road

This is (I think) a fairly new development and may not be in production as yet. I do not believe that MB Australia would have any idea at this point. I think you would need a vin from a vehicle with them fitted. At this stage I don't believe any of the Australian Production vehicles have been built. Only Prototypes (without the tanks).

You may have to wait until later this year.

John

I think any decent ss fabricator could build a custom one to go in that space. The difficulty is devising a filler for the 463 which would not mess up the standard one. David's has a method by which the standard filler overflows to the secondary tank automatically. The ORC one has a separate filler behind the flap so is still neat. David's hangs down too far for my liking but otherwise is spot on

Was thinking more about the double filler on that link.

I wouldn't worry about the weight of the tanks. As Roly says you can maximise space with SS. Also if you figure that towing a boat barely makes a difference to a G's performance then the weight of a fuel tank certainly won't either. Besides the contents will weigh way more than the tank.

:) think 100 litres up on the roof will make the C of G a lot higher which does not sound to good ,,

i'd do a bit more research into small car fuel tanks , i've got a nice small rectangular plastic fuel tank from a citroen 2CV , i'm going to fit it into an ex military raidtrac 412 bit like an argocat but made of alloy and has tracks ,,, actualy i think the fuel tank from an argocat would be good small rectangular tank would fit in the back between rear arch'es behind rear seat , or could be underslung but would need a bash gaurd ,

Thanks for the links. My favourite option is for a plastic tank in the chassis. It looks like I might be able to find one the right size, or have one made to spec.

I'm not very technical but am I right in thinking that if the top of the new tank is lower than the old one and the bottom is higher, then I just need a fuel line between the bottom of the 2 tanks and a breather in the new one, and the fuel flow will happen by gravity?

Basically, the existing fuel tank is as high as you can get under the chassis so if you put an auxiliary tank underneath then you will need to pump it. If the auxiliary tank goes inside the rear of the car (ie. rearward of the rear passenger footwell) then you can gravity feed.

I remember one of the German companies had a tank that sat in the rear load space with a filler above, but within the opening of the filler flap and fed by gravity. Any race/offroad tank manufacturer should be able to do the full manufacture and install for you - Alisport in the UK certainly.