I'm trying to decide if my rear diff is knackered or not as I can hear noises, what I consider loud noises coming from it.

It's a R160 4.44 mechanical LSD on a 330bhp Type R. There is quite a bit of add-on bracing around it (pics below), and also the two main fixing pins with the 19mm bolts on have solid aluminium bushings - so it's pretty solid in there, fixed to the subframe.

Whilst cruising at steady speed, say between 50 and 70 I can hear whining. This isn't too loud. The loud noise is a clattering, knocking, especially on over-run. If it's over-run down hill even worse. I can also hear back lash when lifting off and back on. All worse when hot, and particularly louder from the left inside rear (a friend has had his head in the back to confirm this).

Is all this clattering, banging and knocking normal, for what I can only thing is because of the fixing arrangement?

 

oil in dif ya

 

mine does same mate left aswell. but no whining noise. If u put your foot down full boost then come off throttle do u get a knock? Im not sure where this noise comes from yet?

 

i had this same problem drained and flushed and put new diff oil in syntrax !!!! and hey presto was right as rain !!!!

 

LOOK AT THE PIC AGAIN

The rear section of the exhaust has a hanger that not even sitting in the rubber mounting

I reckon that your noise right there

 

Well spotted Baz... however, that is an old pic and since then the hanger has switched sides where it works properly

 

ok Im lost so