I know this have been written about before, but I have some questions.

I remember reading an article in a magazine of the press-launch of the works rally GpA Sierra Cosworth 4x4 way back in the beginning of the 90's.

It was written the they could set the center diff torque split according to the drivers preferences, one prefered 45/55 and another 40/60 etc.

How was this done?
Was there just other ratios in the planetary gear and could it be set to 50/50?

Must underline this was the early 5 speed rally MT75 transmission,
not the later 7 speed MS90 transmission.

I also read in a mag about a rally Escort Cosworth with a R&D transmission, which I belive is based on the MT75(correct me if I am wrong), and I belive it was written that the torque split was 50/50 with visco center diff.

Anybody know anything about this transmission?
Are they available?

Hope someone has the time to answer!

ESV