Author Topic: Criteria for replacing 6.9 gine mounts  (Read 89 times)

raueda1

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Criteria for replacing 6.9 gine mounts
« on: 03 September 2019, 09:53 AM »
The mounts look to be in surprisingly good shape - not collapsed, cracked or otherwise distressed.  Rubber is still appropriately pliable, neither hardened nor softened.  I suspect that they were replaced at some point.  Is there a strong argument to replace them beyond the usual "it's easy when engine is out and they're pretty cheap, so why not?"  thanks,
-Dave
Now:  '76 6.9 Euro
Before that:  1966 230S, 1964 220SE coupe, 1977 Carrera 3.0

Randys01

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Re: Criteria for replacing 6.9 gine mounts
« Reply #1 on: 05 September 2019, 03:44 AM »
They are absolute dogs to do in situ. I'm not sure if they are "cheap' but even if they are a King's ransom, do it now.

UTn_boy

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Re: Criteria for replacing 6.9 gine mounts
« Reply #2 on: 17 September 2019, 05:49 AM »
6.9 motor mount are no longer available, and haven't been in a few years.  Mercedes will not offer 6.9 motor mounts any longer.  Even so, you can use mounts for a 450se/sel.  Motor mounts can be deceiving.  They can look good, but as soon as the engine's weight sits atop they can collapse.  Especially if they're an aftermarket brand.  So, "when in Rome....." comes to mind.  RandyS isn't fibbing about how difficult they are to get to when the engine is installed.  If there is any argument then I imagine it's quite fitting regarding the aforementioned. 
1966 250se coupe`, black/dark green leather
1970 600 midnight blue/parchment leather
1971 300sel 6.3, papyrus white/dark red leather
1973 300sel 4.5, silver blue metallic/blue leather
1976 280s astral silver/blue MB Tex
1978 450sel 6.9 Euro, Anthr/velour

Mattr

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Re: Criteria for replacing 6.9 gine mounts
« Reply #3 on: 17 September 2019, 08:48 AM »
As someone who's running around with a broken motor mount on one of his cars, I'd say change it while it's easy.
1976 450SE 6.9 FrankenBenz (#2288?)
1977 450SEL 6.9 #2333