Single fuel tank

[mrcrappy]

Evening all,
Has anyone removed one of the fuel tanks to just leave the drivers side one? Ive read a few tank related posts tonight and many people seem to have difficulty filling both tanks with modern fast fuel pumps, ive also had issues with parking at an angle so the fuel runs into the 1st tank and overflows out the back (ruining a new tarmac drive at a B&B), hot weather seems to do the same with expansion. I figured it may not be as well balanced but the second tank probably doesn't fill most times anyway and since it overflowed i usually only put small amounts of fuel in.
I can't remember because the body has been off for so long but it may even give better access to the rear brakes?
All the best.
Jon

[mrcrappy]

No not from the filler, from the small vent/ overflow pipe in the filler neck which runs round the boot and exits near the passenger side wheel. It is the filling that is the main problem as the tanks have a small joining pipe at the bottom and a large 2" ish pipe at the top, because of the high fuel pump rate of modern petrol stations the two tanks don't seem to equalise from the bottom, they appear to overflow from one tank to the other through the top connector which is at a far slower rate than fuel is going in at.
The overflowing out the back is (i assume) caused by the top of the tanks being fairly high in relation to the filler neck vent/ overflow, when parked on an angle the fuel stays level and ends up going back up the filler. I would think that as the injection system uses a fuel return line the tank could be sealed with no need for a vent?
Modern fuel tanks tend to be fairly flat to keep the centre of gravity down, this means they are sat much lower than the filler with no chance of overflowing. Am i right in thinking that the more modern TVRs had a top filler cap in the boot? Again very little chance of overflowing.
I am only weigh up my options before i put the body back on, it would also be one less thing to refurbish etc. if i only fitted one (lazy).
Regards
Jon

[mrcrappy]

I did wonder whether i could move the overflow in the filler neck and re route it back to the tank, assuming i never filled the tank to the top to leave an air gap for heat expansion i guess i would be ok? Failing that a pressure relief valve in the top of the tank but to be honest i cannot imagine enough pressure would build up to do any damage. Back when i found this issue i used to push one of these in the rear overflow and in never blew out or leaked.

I Suppose while they are both out i could have a bigger bottom connector welded to each tank, i cannot for the life of me remember how much clearance there is down there though, seem to remember it being tight.