Broken Differential. Why?.... pics inside

[RedEj8]

I believe the trans code is s4c. Hydro trans. out of a 99 civic si. It shifts fine, no grinds, no noise.. I heard some grinding noise one day about 5 months ago but it went away so I didn't think much of it after that.

I pulled the trans to do a clutch job and noticed metal chucks behind one of the axle seals. Tore trans apart and found this.
http://i64.photobucket.com/albums/h192/redej8/IMG_1053.jpg
http://i64.photobucket.com/albums/h192/redej8/IMG_1051.jpg
http://i64.photobucket.com/albums/h192/redej8/IMG_1054.jpg
http://i64.photobucket.com/albums/h192/redej8/IMG_1058.jpg
http://i64.photobucket.com/albums/h192/redej8/IMG_1059.jpg
http://i64.photobucket.com/albums/h192/redej8/IMG_1061.jpg

In these pics you can see where pieces of metal have gouged the case and the ribs are broken off.
http://i64.photobucket.com/albums/h192/redej8/IMG_1055.jpg
http://i64.photobucket.com/albums/h192/redej8/IMG_1056.jpg


What would cause this? Why would those 2 gears strip like that? This is a daily driver, never been to the track and it's been driving perfectly.
Oh, and anyone got a spare stock diff they want to sell?

[jhadleyh]

damn baker you weren't kiddin

[RedEj8]

Just talked to someone at Mainstream. They just happened to have an extra diff they're going to ship me today.. SWEET!

[AirMax95]

Cool diff...

[D3UC3S]

Thats crazy that it was that fucked and still drove fine....

testament to honda right there