... dissolved by bioethanol.
What has it been exposed to? Ordinary UK street petrol?
What's the source of the gasket, and is there any identification on it?
Photos, please, as you dismantle.
During modifications to my filler neck, I had a 10mm(?) thick flange welded to the side of the tank and the pump now bolts up to this. It was just too easy to distort the tank when tightening the pump bolts and this solves part of the problem. The fuel pump cradle can also be distorted by overtightening but that would be more difficult. It's not a good design is it.....
If I ever have any pump issue I will modify the tank and run an external Bosch 044 pump mounted on the rear bulkhead - god knows why I didn't go that route when I rebuilt her
The Rover pump cradles are no longer available and it always struck me as something design by Wallace and Grommit !
Are the Rover cradles available from anywhere, eg Redline if the cradle face is distorted?
I didn't find one after trying all the known 7 sources and the Rover parts dealers too, if you do grab it, and then go buy a lottery ticket too...
An external pump would also mean a filtered pickup could be located low down in the center of the tank which would give better tank capacity.
Lotus Seven Club AR Working Group
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You may need to look at the tank as the K tank has trap doors to accomadate the in tank pump location in the right hand third of the tank.
ISTR the VX race tank took the outlet from te lower front face running 3/8" into the pump, not sure on the internal pick up placement or weather it was filtered or not, but the 044 should be prefiltered anyway and these filters are usually stripable with a 100 micron gauze.
Fuel pump out and the Gasket looks ok, with no degradation whatsoever and the Blue hylomar is still present. Interestingly some Fasteners were not as tight as others & the rivnut threads were furred up with Ali oxide. I think I’ve lost threads & the bolts have loosened. There is some irregularity in the mating face apparent but it’s not extensive.
The first step I think should be to drill out and replace the blind rivnuts first, as a cheaper alternative to replacing the tank. Does anyone know the spec of blind rivnut I need, or am I best ringing Arch tomorrow.
I found some here, but not sure what I need.
The first step I think should be to drill out and replace the blind rivnuts...
Is the tank drained and are the fumes flushed out?