Well the R31 diff is in the coupe and on first drive I am happy with the Ratio.

But man does the bloody thing whine. If you think your wife is bad you aint heard nothing till you have heard this diff.

Noise starts off at reasonable level at 50 and when you get to 80. "Your looking for the ear plugs"

So I gues the question is can these things be re-built? I know they were notorious in the Skylines, even under warranty for diff whine but this is way worse. The diff in question has 400,000 km on it too. Also the housing after a drive is quite hot to the point of not being able to hold your hand on it. Is this normal?

I guess if I go rebuild I might as well look into LSD?

Cheers