I have seen 2 detroits brake and I have broken my arb 3 times along with a number of other ARB repairs. Its an 8" ring gear/small case---its all weak :awesomework: and has its limitations.
One thing I have not seen is the case brake in half on a toy so to say the case is weak I won't agree---they do however have a shitty bearing surface for the side bearings.
I have a broken detroit here too, but it was from bad abuse and destroying stock shafts birfs lots of times. Owner caused in my opinion.
What broke on your ARB? 60 or toy?
I have seen broke toy cases. I have taken out a few diffs with the pin (lockwrongs of course) broke in three chunks, one in the locker and the ends still in the case.
I have seen a detroit at Odies that fell in two when the carrier was removed. The one half of the detroit case was on the ring gear and the other half was by itself.
Those are rare instances tho and very uncommon.
The three busted locrites under my bench are just from diffs this year.
Even if they did last, the manners are so bad they are not worth running to me.
Most of the time a broken detroit or ARB is pulled it is because of a major failure of other parts also gave out at the same time. Like when a Long or a ring gear breaks and the shock load released breaks other parts as a result.
ALL the lunchbox failures I have seen were the only thing wrong with the axle and not caused by other parts.