Thread: New Member-1st Real Q. 1991 RR - rear axles

Originally Posted by Bush65

I think a 91 rangie would have 10 spline axles. The weakest part of the stock drive line is the 2 pinion diff centre, but the ARB's (4 pinion) have fixed that.

If you don't go over 33" tyres, it will depend upon how you drive and how much fatigue damage has occurred already, as to how the stock 10 spline axles will hold up.

With regard to how you drive. In one sense, lockers will allow you to crawl some obstacles that you would otherwise have to have momentum to get over. Crawling is easier on the axles.

A situation which leads to many broken axles with lockers, is lots of wheel spin and one wheel in the air, then getting some traction/forward movement and the airborne wheel suddenly landing. This creates shock loading that breaks the axle. The short side axles can not absorb as much shock loading as the long side axles.

Maxidrive makes stronger 10 spline axles. 24 spline maxi or MacNamarra axles are stronger again, but then you would need to change the side gears in the ARB's.

The 10 spline cv's are similar strength to the county cv's, so I wouldn't change them unless you change to after market 24 spline axles.

My advice is to drive it for a while. Maybe get some spare axles. However I don't know where you are or what the tracks are like in your area, and what is needed to drive them.

Unless you plan on wheeling it hard, you should get some good fun from what you have.

I agree with bigger tyres the diff centre itself is the weak point over the axles, if you are going to do it put a maxi drive locker in and axles aswell, you shouldnt have a problem.

This just happened to me, i thought the axle had broken but it was the pin through the centre of the hemishpere, it had just snapped. Axles were fine and i am only running 31's, but this broke after 2yrs of punishment so i did alright. With 33's they wouldnt last that long. Matt