25 replies to this topic

[kez_19]

i have seen that some minis i believe that they are all coopers have 2 filler caps one on each side...... is it because they have 2 tanks or is it just for looks???? if they have 2 tanks do they take fuel from both tanks at the same time and into some sort of a t junction then to the engine or do they empty one tank then switch over to the next tank?????????????????????????

thanks for any help and advice

michael

[jpd]

i have twin tank setup on my '92 italian job.

one tank is std size, the other is smaller c. 20 or 40L

both tabks feed into a T junction, with fuel filter on each end, having them going into a T junction pipe rules out the need for two fuel guages. I suppose a cut off switch could be fitted to the smaller tank, for around the town/short distance driving, but not really that necessary

[kez_19]

i have twin tank setup on my '92 italian job.

one tank is std size, the other is smaller c. 20 or 40L

both tabks feed into a T junction, with fuel filter on each end, having them going into a T junction pipe rules out the need for two fuel guages. I suppose a cut off switch could be fitted to the smaller tank, for around the town/short distance driving, but not really that necessary

thats great news and easy to do as well

do you have a smaller one for any special reason (lack of space etc )??

[Dan]

The right hand fuel tank was originally an option on Cooper S models and eventually became standard on them. It has been a very popular modification for all Minis ever since. It is smaller for one reason mainly, when it was first available the standard tank was smaller too at 5 1/2 gallons compared to the 7 1/2 that later Minis have. The right hand tank tooling was made by adapting the press parts from the original tank so it is the same size as the 5 1/2 gallon left hander. When the new larger tank was first fitted no Minis were fitted with right hand tanks as standard so a larger tank wasn't designed for the other side. Also a larger tank would make battery access tricky, even the small right hand tank overhangs the battery. Nobody needs 15 gallons of fuel capacity in a Mini anyway, and the boot would end up being tiny. If I was fitting a right hander I would swap my large left hand tank for the smaller one. 11 gallons is quite enough (and weighs enough).

the other is smaller c. 20 or 40L

Smaller at 40 litres! How big is your left hand tank? It's only meant to be 34 litres!

[kez_19]

Nobody needs 15 gallons of fuel capacity in a Mini anyway, and the boot would end up being tiny. If I was fitting a right hander I would swap my large left hand tank for the smaller one. 11 gallons is quite enough (and weighs enough).

well actually the reason i am asking is because i live in northern Sweden and it can be a bit far between petrol stations so when i saw a couple of minis with double tanks i wasn't sure if it was possible or just decoration

[taffy1967]

The original Cooper S was ground breaking in most forms of Motorsport, so no it wasn't just decorational: -

[MarkGTT]

It was also used for better weight distribution not just extra fuel capacity.

[mk1leg]

You can fit R/H tank to your mini its not to hard as I'v just done mine...............

[biggav]

I have a modified Left handed tank on the right and a larger original on the left. Holds lots and lots of super unleaded


..... and a big tank of nitrous inbetween.

[Tomf]

I have a modified Left handed tank on the right and a larger original on the left. Holds lots and lots of super unleaded


..... and a big tank of nitrous inbetween.

Did you just use a BFH? or did you chop some out and re-weld? also did you have to re-weld the fuel neck?

[kez_19]

You can fit R/H tank to your mini its not to hard as I'v just done mine...............

did you have to modify your tank/s to get them to fit if so what did you have to do??

did you find the same problem as mentioned earlier in the thread about access to the battery

[mk1leg]

No, access to battery is as the same as I fitted an orignal R/H tank...................

[biggav]

My modifies lh tank just had the filler neck cut off and re-attached in a different position and a plate welded in the hole that was left... i bought it already done.

[Tomf]

Cheers Looks like ill be buying another tank to have a play with lol, also when filling that tanks up, do you just fill from 1 side and it just self levels? or do you have to fill both sides?

[Ethel]

They will self level, but a lot slower than you can fill them.