[Biturbos4] Quick question about springs and shocks

Wilson Northrup northrup at crazybug.com
Fri May 26 21:44:51 EDT 2006

Lowered springs for the S4 will have increased rates over the stock S4 
springs as there is less travel.  This is common for any car.

The only exception that I could think of for this is if someone cut the 
stock spring.  DO NOT CUT YOUR SPRINGS.

Unless the koni's are modified to be short stroke, or shortened barrel, or 
if they are some type of generic race shock which has been tretrofitted to 
use on your vehicle,  they they will have a stroke compatable with the 
stock spring.  The standard "Koni Yellow" as it is often referred is an 
oil based street shock which is designed to be compatable with stock 
springs.  By compatable, I mean that the vendor claims that it is designed 
to improve the handling of the vehicle when used with stock springs.

Any comments about ride quality suffering should only be directed to those 
who prefer a soft ride to increased cornering performance.   Ride quality 
is very subjective and opinions of ride quality are not common for all 

'00 S4 Biturbo  - stiff ride for some, nice ride quality for me.
'00 RX7 TwinTurbo - harsh ride for some , nice ride quality for me.

On Fri, 26 May 2006, Grant Lenahan wrote:

> Hmm. I dont have first-hand experience, so take my comments for all
> they are worth :-)
> The stock S4 springs have quite significant rebound stiffness, so I
> dont think they are a "no no" with lowered springs, but they might
> bottom out and fail (ask me how I know).
> The reverse - short stroke shock and longer spring - is less clear cut.
> But it DOES mean that the shock is not at its center point.  So it is
> wrong.  I dont know if the point in its travel determines valving in
> that particular shock.
> But the point is that the shock travel and spring travel should be
> essentially the same.
> There are different ways of lowering of course. Change the spring perch
> (good) or shorten it (not so good). What was your method?>
> Grant
> On May 26, 2006, at 10:15 AM, mike mcclurg wrote:
>> Right now, my '01 S4 is lowered (Intrax springs, I
>> think - they are purple anyway) with Koni shocks.
>> From reading the archives and looking on audiworld, I
>> have found that it is a no-no to put stock shocks on
>> lowering springs, but my question is the reverse.
>> What if I put stock springs back on? Can I still use
>> the Koni shocks?
>> Thanks,
>> Mike

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