Originally Posted by Shagey71
Got a rebuilt final drive/pinion carrier/center section, whatever lingo you want to use. It is wearing a brand new 4 bolt flange. The current set up is wearing a donut and 3 bolt flange with the locator stud.
So - get a new seal and swap flanges? Or just upgrade the rear prop shaft to double UJ and leave the new 4 bolt flange on the new center section?
2" lift on the truck. Never had problems with lift generating an issues on the donut setup.
Your current set up is a flex joint, your future set up is a u joint.
Unless you know how to work on a differential or having a shop do the flange swap, don't attempt it your self. It is more complicated than just bolting on a different flange.
If the gear ratio of the new unit is the same as the old unit then the whole differential swap is highly recommended for a do it yourself, specially if the new unit is trusted to be in good working order.
2 to 3 1/2inch lift is very standard on rovers with the higher number bordering on driveability issues.
2 inch does not seem much on paper but in actuality it makes a huge safe change in all aspects, handling, drive feel, longevity of components, off road clearance, stance etc.
Rovers do excellent in Stock conditions when off road due to the articulation geometry of their suspension, 2 Inches allows to retain such prowess above that and they get too stiff and you tend to loose this advantage if not heavily loaded.
Ask around and good luck