[s-cars] 034 street density mounts on the S6

[Jerry Scott]

Mike is right about the damping of the mount being important.  I used to
design mounts for GM many years ago.  For the final design of the mount we
would ride test many different rubber compounds varying both spring rate and
damping to get the best ride control.  Compounds would range from butyl
rubber for high damping to natural rubber for low damping.  The final
selection was the result of many days of testing at the GM Proving Grounds
and sometimes 50 different compound trials.  I'm sure that Audi does the
same ride tuning and has optimized the best compound for our car.  When you
change to aftermarket mounts, which are molded with a wild guess compound,
you give up all that tuning effort that went into the design.  The compound
was also durability tested for 36,000 miles to make sure that it would
survive all the severe road conditions at the Grounds.  Just my 2 cents of
advice, but I always go with the stock mounts for replacements.
Jerry

-----Original Message-----
From: s-car-list-bounces at audifans.com
[mailto:s-car-list-bounces at audifans.com] On Behalf Of Mike Sylvester
Sent: Tuesday, October 09, 2012 5:34 AM
To: Steve Marinello; Tony Curran
Cc: Steve Stewart; s-car-list at audifans.com
Subject: Re: [s-cars] 034 street density mounts on the S6

Steve,

You replaced a dampening device with one that that is less dampening.
You are going to feel more vibration.  That is the whole point of those
things.
Your mechanic can't install them wrong.  They are very simple.  They are
held on by 3 nuts.
2 to the body and one to the aluminum arm.

You are asking questions that are very subjective with no ability to make
direct comparisons.

What it comes down to is what you want.  If they are too stiff for you, take
them out and put back the originals.

If you didn't want them stiffer, what was your point of installing them?

Mike Sylvester
'95 S6 avant
'83 urq 20vt

> -------- Original Message --------
> Subject: Re: [s-cars] 034 street density mounts on the S6
> From: Steve Marinello <smarinello at entouch.net>
> Date: Mon, October 08, 2012 11:07 pm
> To: Tony Curran <tony.curran at sympatico.ca>
> Cc: Steve Stewart <twowheeldrive at gmail.com>, s-car-list at audifans.com
> 
> 
> Don't know what the problem is, although as I said, mine has the RS2 mods.
>  The engine and transmission mounts were just put on the car.  The 
> change was immediate and very noticeable.  Have to note that on some 
> days, it seems less bad than others, but never anywhere near smooth 
> and unnoticeable like it was before.
> 
> Steve
> 
> On Mon, Oct 8, 2012 at 8:52 AM, Tony Curran
<tony.curran at sympatico.ca>wrote:
> 
> > I too have the 034 street density engine mounts which have been in 
> > for 2.5 years (and 40 000kms) and no noticeable vibration issues 
> > yet. New OE transmission mounts have just gone in this last week. 
> > Original snub mount in still. MRC stage 2 mod.
> >
> > Are the 034 mounts failing with time?
> >
> > Tony
> > 96 S6
> >
> >
> > -----Original Message-----
> > From: s-car-list-bounces at audifans.com 
> > [mailto:s-car-list-bounces at audifans.com] On Behalf Of Steve 
> > Marinello
> > Sent: October-08-12 12:20 AM
> > To: Steve Stewart
> > Cc: s-car-list at audifans.com
> > Subject: Re: [s-cars] 034 street density mounts on the S6
> >
> > Steve,
> >
> > As I noted, I no longer have a smooth feeling car sitting at a 
> > light. If yours is still smooth, it leads me to (again) question how 
> > the mechanic did the install.  The only difference is that he also 
> > later added the differential support mount, but it was that way 
> > beforehand...and the driveshaft isn't turning at the stop light 
> > anyway.  Same mechanic who did the A4, so the results were very
unexpected.
> >
> > Glad they're working out for you.  Is your car stock or RS2 or other 
> > modified?
> >
> > Steve
> >
> > On Sun, Oct 7, 2012 at 10:27 PM, Steve Stewart
> > <twowheeldrive at gmail.com>wrote:
> >
> > > Just one quick observation...just installed the 034 street density 
> > > motor and tranny mounts in my S6 this weekend. Can't comment on 
> > > longevity, but they firmed things up just a bit. Not harsh at all
IMHO.
> > > Steve
> > > _______________________________________________
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