Balance issues are not insurmountable... To my knowledge it is possible to combine flywheels on the Lister crankshaft in any number of ways and they do not have to even be the same from side-to-side. It is possible to have more than 2 flywheels and various combinations and still have proper engine balance. Common sense would indicate that they should be the same from side-to-side but we have seen original units setup and run with 3 flywheels before - therefore original crankshafts should be strong enough to handle highly differing torque forces from one side to the other.
That said, there might be some real issues in swapping OEM Dursleys with Indian clones. We know the metallurgy of the clone crankshaft forgings and the surface hardening is not the same as the originals. The flywheels may not have the same weight distributions and key positions - I have heard that some of the clones have the flywheel keys at 180 degrees opposite from the originals. I hope anyone who has experimented in this regard will speak-up here and let us know about their experience. (Sadly, our actual hands-on experience with the Dursleys is very limited on these particular models.)
dieselgman
