Clunking

[Peter P]

Hello All
I am a66yr old male, living just west of Toronto Ontario. Semi-retired. I bout a 2000 Z3 Roadster last summer. 2.8ltr
135,000kms. Car runs great.I have always been a bit bothered by a clucking sound in the rear end when I put it in reverse and smaller ones when moving slowly in the upshift (automatic)

I have had BMW mechanic tell me this is in heritage of this car????. Is it? I am not a mechanic, but it does not make any sense to me
Does any one know about this?

Regards

 

[Lee]

Hi Peter.

Yeah this noise is common on the Z3. The diff looses its preload on the pinion bearing causing a bit of play. This is the clunk you can hear.

In my picture shows the crush sleeve. This is the culprit. It looses its elasticity.

 

[Shelly]

 

[Z Victor 1]

Yup, my 2.8 had it after only 30k.