[s-cars] OE spring options

[Thompson]

*This message was transferred with a trial version of CommuniGate(tm) Pro*
Thanks for the write up and part numbers. Were you able to order these
directly through AoA or did you use another source? I wonder if the rear
sport spring could be used with an adjustable perch for my trailer towing on
my S4? I used to have a set of Spax adjustable rears on my type44 Avant.
Worked great until the ravishes of Vermont salt took over.

T-

> From: "Paul  Gailus" <gailus at mindspring.com>
> Reply-To: "Paul  Gailus" <gailus at mindspring.com>
> Date: Tue, 6 May 2003 23:52:49 -0500
> To: "Thompson" <thompson at audisport.com>, <apennell001 at yahoo.com>,
> <s-car-list at audifans.com>
> Subject: Re: [s-cars] OE spring options
>
> *This message was transferred with a trial version of CommuniGate(tm) Pro*
> As an FYI, I installed the following "sport suspension"
> springs on my S6 last summer:
>
> Front: 4A0 411 105 R   1 silver, 2 violet
> Rear: 4A5 511 115 AG  1 yellow, 3 blue
>
> The fronts are for '93-'94 AAN with air cond & manual
> tranny, or S6 plus without air cond.
> Inteestingly, '92's show the same part number but the
> color code was 1 yellow, 3 blue like the North American '92's.
>
> As Chris mentioned, the rears are for all 92-97 sedans
> with sport suspension.
>
> I like these springs a lot. There was very little body drop
> that I could observe, probably less than 10mm.
> No problem aligning to spec with standard camber plates.
>
> I put on Bilstein HD's front and rear. On the rear I noticed
> that the HD's kept the spring loaded enough on the spring
> mounts at full extension to prevent it from ever shifting
> off the mounts. However, there was not all that much
> extra margin with the shorter free length of these springs.
> So I believe that the Bilstein Sports should be OK too.
> (I had Sports on hand just in case I changed my mind.)
>
> Not having the proper fixturing or setup to test the
> spring rate with enough loading to get past the
> "end effects", I came up with some calculated values
> last year:
>
> Rear  4A5 511 115 AG   1 yellow, 3 blue
> 0.540" wire diameter
> 4.6" outside diameter  (4.6-0.54 = 4.06" mean diameter)
> 12.0" free length end-to-end
> 10.25" estimated active coil length
> 6 active coil turns  (8 total turns)
> Calculated spring rate = 304 lb / inch assuming spring
> steel of  11.5 x 10E6 psi modulus
>
> Front  4A0 411 105 R  1 silver, 2 violet
> 0.635" wire diameter
> 7.0" outside diameter  (7.0-0.635 = 6.365" mean diameter)
> 12.75" free length end-to-end
> 11.5" estimated active coil length
> 4 active coil turns  (5.75 total turns)
> Calculated spring rate = 227 lb / inch assuming spring
> steel of 11.5 x 10E6 psi modulus
>
> Paul
> 93 S4
> 95 S6
>
> ----- Original Message -----
> From: Thompson <thompson at audisport.com>
> To: <apennell001 at yahoo.com>; <s-car-list at audifans.com>
> Sent: Tuesday, May 06, 2003 8:20 AM
> Subject: [s-cars] OE spring options
>
>
>> *This message was transferred with a trial version of CommuniGate(tm) Pro*
>>>>> What I have not seen discussed much are OEM options for this car.<<<
>>
>> I have been looking at the FA parts fiche and noticed several different
>> front and rear springs for our ANN engine cars with air conditioning. My
> '93
>> S4 has 1-yellow, 2-silver paint dots on the front springs indicating that
> it
>> is not a sport suspension. 1-yellow and 2-violet paint marks are the
> correct
>> front springs for the sport suspension for the AAN w/air con indicated by
>> FA. I don't know what the correct shocks would be for the "sport
> suspension"
>> springs, or any other part needed to switch our US spec file://S cars
> over, but
>> would like to investigate this in depth as OE sport springs could be a
> good
>> option - only if available - hopefully not gone NLA. Has anybody done this
>> leg work?
>>
>> My reason is that, believe it or not, I tow a Coleman Taos popup camper
> with
>> our '93 S4 and need better rear springs to handle the extra tongue weight
>> load. This would only be to level the rear out more. I did notice in FA
>> parts fiche that there is a self leveling rear air suspension too. Hmmmmm.
>>
>> There are some dealers that will order from Germany. The Porsche dealer in
>> Bend, OR is one that I know of. I might get started there.
>>
>> Thompson
>> 88 type44
>> 93 file://S4 - big "camper" reds
>> 95 file://S6 - H&R, Koni Sports, 245/40-17s
>>
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