Gearbox fitment and chassis modifications for changing from original planned Rover V8 Engine - BMW V12 as well as changes to water, oil and fuel systems  



I'm changing from my original plan of going with a Rover V8 to the BMW V12. Part of this on an injection system requires an output from the petrol tank through the fuel pump and a return. As the BMW has 2 flow and returns (one for each set of 6 cylinders- 2 fuel pumps and filters), my petrol tank needed modifying. Its aluminium so I got a specialist to weld on an extra flow/return nipple. They are different diameters, and not off the shelf so I had to manufacture them myself. Parallel do a slightly larger tank with 2, and I could have swapped, but this involved extra cost and the fill neck comes out of the top in keeping with the 6.0 or GT style filler cap setup. As I'm building an SV and wanted my Aerocap to remain on the side of the wing, it was easier to modify my existing arrangement.
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