A year ago in March I came across an add for some Joyner parts that were being sold in the Pheonix area.I was going to be down that way for our annual trip to see some Major League pre season baseball so i called and learned the person selling the parts was a former joyner employee we all know who was then out of work because of joyner closing their doors.Once down there i contacted him again and went by his house and purchased some items from him and one of the items i was told to be an upgraded diff.Once i got back home to So Cal i packed the diff away in a box and placed it in a cabinet in my garage along with the other items.After recent discussions about diffs i decided this past Sunday to bring it out and take a look.After pulling the oil fill plug and looking inside all i could see was the corner of head of the bolts, not enough to tell what they were so i split the case to see inside and was very surprised.Rust corrosion on the bearing,and gears.while spinning the bearing i can feel a flat spot on them.I also found some chunks out of the inside of the case as well as shavings.The gears appear to be new with no visable wear(just corrosion)on them.The bolts are 8.8 and do have the locking tabs.From what it looks like they had a bad diff that was returned and went in and replaced the gears,bolts and used the locking tabs then slaped it back together without even cleaning the aluminum shavings from the damage that had been done.The one sealed bearing was not even completly seated and the shims are corroded as well.See the photos below.
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