Rear shock top mount??

[JFENG]

Decided to chase down a rattle from the rear left/right. Here is what I found when I dropped one of the shocks. Does this look right to anyone? Where is the metal sleeve (33521105047)? Why the 2-piece rubber bushing?

 

[bmw2800cs]

I had a strange rattle that ended up being the rear window rubber gasket

 

[JFENG]

Here is what I found:

View attachment 192597View attachment 192598View attachment 192599

Has anyone seen/used this sort of rear shock top mount? I have a couple spare rubber bushings from BavBob, but those require a sleeve AFAIK.

 

[bavbob]

John, I think those mount parts were standard with the Bilsteins for our E9's, came in the box. I still have all of them brand new as I used new OEM mounts.

 

[sfdon]

Yeah- that’s a known issue. As the rubber gets old the shock shaft gets shifted (loudly) into the chassis.

That’s why we use the metal sleeve and the through bushing as seen in ETK

 

[Ian C]

I have had to use that style to fit my new spax as the rod is too short for originals. Are there any through bushings for these shocks?

 

[eriknetherlands]

Yeah- that’s a known issue. As the rubber gets old the shock shaft gets shifted (loudly) into the chassis.

That’s why we use the metal sleeve and the through bushing as seen in ETK

Yep, as noted also in other threads.
Note that @deQuincey also figured out that the rubber 'trough' piece with the metal sleeve is pictured upside down in the tech drawings. If i remember well, the thick side should be in the trunk, thin side towards the road. Opposite of what you would expect.
DeQuincey has a thread on it here, somewhere.