rear of 4000q sags

[Graham Thackrah]

Hi Chris,

> My 86 4000Q sags in the rear.  Does anyone have any suggestions on how to fix
> this, other than buying new springs at the dealer for big bucks?  
> 
> And before you suggest a set of sport springs, I am absolutely not interested 
> in lowering the car, or making it ride rougher than stock.  I live in the 
> Northeast where there are lots of potholes, and otherwise poor roads.
> 
> If anyone has some suggestions or experience than can help me, please E-mail 
> me personally, because I do not pay regular attention to the list.

Just had this same problem. My car failed its MOT (UK's road worthiness test)
for it. You have to replace the springs. I also wasn't impressed with main
dealer prices for the springs (111 gbp *each* back in 1999, dropped to 70 odd
gbp *each* now after Audi's price revisions for older models) so I did what I
did last time I broke a spring and got some Boge replacements from Dialynx in
Swindon, UK. I had to do this a few years back on my 84 quattro and never did
find out if they were the correct part but they fit and seem to give a stock
ride height...

The part numbers are at the following URL and below

http://www.audifans.com/archives/1999/03/msg01102.html

25.A07.0 rear and 25.A06.0 front

if you check in

http://www.audifans.com/archives/1999/02/threads.html

for posts from me you'll see the thread about these springs

I paid about 70-80 quid (that's `pounds sterling' if you don't know the
UK->US translation for `quid' :) for a *pair* or rear springs or 108 usd.

They were *not* identical to the ones that came off the car (apart from the
rust/paint discrepancy - Huw ;) the number of coils were not quite the same, +/-
1/4 to 1/3 turn, I didn't manage to compare to a set of dealer sourced springs
but they did give a stock height as far as I could tell. They fitted fine with
the perches top and bottom.

If someone with EKTA could check pt no's between the saloon and coupe NA 84-86
quattro's we could tell if they did use the same springs?

HTH,

Graham.

1985 90 quattro.

P.S. Boge uk said they were fitment for a NA coupe q, they do seem to fit the
84-86 UK 80/90 quattro (US 4000q, I've done it twice on the rear and once
on the front now) but there may be some differences with ABS cars and/or air
con that make them less suitable... ymmv

P.P.S the good news is both times I replaced the springs the dampers seemed to
be fine.