Mine doesn't sit happily at 60 to 65, even with bigger wheels and an overdrive, just too low geared. The bigger wheels are about 5" higher in diameter than the standard wheels.. Casp'

I have managed to source some recond Range Rover classic diffs, which have the increased gearing and have the required filler plugs, so almost impossible to tell. I'll keep the original diffs as it's an easy job to reinstate them, far easier than putting the original engine back.. I'm told the...

Have you fitted RR diffs to increase the gearing? My series 2a has a 200tdi with an overdrive and bigger wheels, but the gearing is still a bit low. I'm getting some RR 3.54 diffs for it. I get over 35 mpg, which is a considerable improvement on the 18 mpg with the 2.25 petrol.. Casp'