GerritD

Just want to make a quick post for those who need to replace the vibration dampers of the engine for early 928 (1978-1983)
They tend to leak easily after some time.

Mine was leaking and I did not intend spend 2x $150 for both engine shocks.
Well I finale found the alternative @ Mercedes : Mercedes part nr 604-2000314 or febi bilstein nr 06569.
These shocks are used on Mercedes 190, 300...and only cost $50 !

The only thing you have to do is enlarge the hole of one of the ends of the shock. Hole of mercedes shock= 8mm and hole to fit Porsche shock is 10mm since bolt is larger. But this can be done easily since the material is aluminium.
And you probably need to shim since shock heads are smaller.

Have fun

Gerrit

AirtekHVAC

Cool, thanks for the tip!

James Bailey

Very nice !!!! Good to have options.

GerritD

Here is a picture of it :



Kr
Gerrit

Speedtoys

Why did the early cars use this, but the later ones do not?

Thanks.

danglerb

Change in motor mounts maybe?

GerritD

Indeed. The later cars had other engine mounts, where vibration dampers weer integrated in the engine mounts itself.

Dave928S

Good tip ... thanks. Wish I'd known this a few years back.

They seem more like rotational dampers to me ... that seems to be the only difference I could detect after fitting new ones.

Speedtoys

So, is there any incremental improvement to retrofit?

GerritD

I believe they changed the design due to reliability and because of engine changes later onwards.
Moreover engine vibrations are directly transmitted towards the chasis
via the engine mounts, so integrating damping directly into the engine mounts is better than supplementary dampers.

Kr
Gerrit

The Forgotten On

Pelican sells OEM mounts for $56
http://www.pelicanparts.com/cgi-bin/...375-179-02-M24
So you wont have to change anything.

Humlee

I am considering getting a pair of the febi bilstein 06569.
The torque ratings are however different; 900N for the febi bilsteins vs 500 N for the Stabilus ones.

Did anyone have trouble with this?

ROG100

I tried buying and modifying the Mercedes shock way back. Drilling the larger hole was easy. Adding washer to centralize the mount straightforward.
However when looking at the tech specs the spring rate was different to the original shock so I stopped this project.
You can buy the original from myself for $63.95 or shop around and I have seen prices around $55.

Hymodyne

I installed aftermarket Stabilus dampers on Lili for about $55.00 per side.

James

Humlee

Exactly what I just released before placing an order for the Mercedes ones. I will try to find some in EU to avoid import taxes. If I fail I'll order some from you together with my engine harness.

Do you have a part number? As far as I am aware the originals are Stabilus 143 9DY