NXG INLINE DIFFERENTIAL

Yes, for occasional use, although we would recommend you opt for our hillclimb/sprint settings rather than full race. If 90% of your driving is road use but with some occasional competitions, we would steer you towards the helical gear differential instead.

Yes, that's the internal clutch plates slipping as the car slowly turns a corner, and is the same for all competition LSDs. It may sound strange, but rest assured this is just the nature of plate-type LSDs when either pushed around a paddock or driven slowly. When driven at speed, the noise will go.

Yes we would recommend an LSD-specific gear oil, 75W90, such as Millers CRX LSD fully synthetic. If not available locally, look for a similar spec competition LSD gear oil from a known brand.

It's not as accurate as using our test rig, however, you can roughly test the pre-load by using a torque wrench on one of the rear hub nuts, with the opposite wheel locked in position. The point at which the wheel begins to turn can be measured on your torque wrench.

It depends on how hard it has been driven. We would typically check the pre-load settings after a season of competition to give an indication of clutch plate wear. For hillclimb use with limited running time, the plate pack should last for many years between services, whereas on the other extreme, oval grass track racing with only right hand corners, it will wear more frequently.

As drive is applied to the differential, the internal drive pins are forced up a short ramp, which compresses the clutch plates and effectively locks the unit together. The steeper this ramp angle, the more effort will be required to lock the differential, and the less aggressive it will be in operation. We have the choice of 35 or 45 degrees on this ramp, with the deceleration side being 90 degrees in both cases - a dead stop to fully unlock on turn-in.

Ideally yes. A correct running-in procedure will reduce friction between the gear teeth while bedding-in the clutch pack. A good procedure is to use the diff gently for between 20-30 miles, followed by 20-30 miles of more aggressive driving, ideally if you can find a space to work in some hard cornering and figure-of-eights. Once complete, an oil change would be recommended, as with a transmission rebuild. This will greatly enhance the lifetime of the LSD.