anyone know what brand of locking diff Nissan will be using ??
any Eaton maybe ?
"Eaton Posi Performance Differentials (Clutch type, Hybrid and Electronic Type)
With Eaton Posi, you prevent wheel slip before it can get started. To do that, carbon disc clutch packs preloaded by a central spring assembly located behind each differential side gear.
When torque input increases (i.e., engine rpm's go up because you've got your foot in the throttle) the clamping load on the clutch packs goes up. That clamping load causes the clutch packs to grab, transferring power to the other wheel. What the end result? Wheel slip is usually prevented.
The key here is that a limited-slip differential's power transfer is primarily based on input torque. So, with normal or light throttle applications on dry pavement, only the drive wheel receives torque, or power - just like an open differential.
Eaton’s Hybrid limited slip/locker (Gov Lok) which is a factory rearend option in many GM built trucks. The Eaton G80 Locking Rear Differential. This automatic unit, available for rear drive and 4-wheel drive vehicles, makes traction problems a thing of the past. The Locker makes towing large boats and campers a breeze. The Locker is a speed sensitive design. That is, it reacts to wheel slip by sensing when one wheel is spinning substantially faster than the other. So, when you're cruising along on clean dry pavement, the locker operates like any regular open differential. But, as soon as wheel slip happens, going forward or reverse, the locker immediately kicks in. Here's how. The differential is set up with a flyweight governor that responds to differences in wheel speeds, and disc packs that are mounted between the side gear and the case. When one wheel is spinning substantially faster than the other, the governor spins rapidly, causing the flyweight to open. That flyweight then catches on a latching bracket and the lockup process begins. During lockup, a self-energized clutch system causes a cam plate to ramp against a side gear. This ramping action compresses those disc packs mentioned earlier. The ramping continues until both axles - and therefore both wheels - are spinning at the same speed. This is full lock, and it prevents any further wheel slip. (Note: Axle lockup can only occur at speeds below 20 mph.)
New from Eaton is the Electronic Locker. The ELocker™ Differential. Expressly designed for 4-wheel drive systems, this thing is something else. It gives you the ability to lock the differentials when YOU decide it's necessary. And when you do, you have power at both ends of the axle. Lock both differentials? Drive power at all four wheels. And the power is there until you disengage it. The power is at both wheels as long as the differential is locked.
Basically, when the system is engaged, friction between an armature and an electromagnet apply force to a "ball ramp" mechanism. This forces the ball ramp's bearings out of their pockets and up the ramp. That action, in turn, pushes the system's locking pins into matching holes located on the back of the side gear. That locks the axle, and drives torque to both wheels."