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View Full Version : A4 b5 steering vs B5 S4 steering



cruciform
02-11-2013, 07:31 AM
Is there any difference between the steering racks and/or feel between the standard A4 and the S4? I have an S4 rack, and was wondering if its worthwhile to swap them out while I have the car apart?

Haenszel20v
02-11-2013, 07:45 AM
I think there is, I've never looked though. I know I liked the feeling of my old roommates S4 better (heavier). Who knows if it was just the rack though.

mysman
02-11-2013, 07:52 AM
Steering damper on the 2.8 and S4 racks, no damper on the 1.8T racks.

Dusty Mauve
02-11-2013, 08:25 AM
From my knowledge there is a difference between pre-facelift A4 and S4.
Facelift A4 on the other hand should be similar to the S4.

Haenszel20v
02-11-2013, 08:43 AM
Steering damper on the 2.8 and S4 racks, no damper on the 1.8T racks.

Built into the rack? I don't think its an external part.

Mad Cow
02-11-2013, 09:16 AM
Built into the rack? I don't think its an external part.

You can see it on the front of the rack, I would assume the rack is the same but V6's just have the damper bolted to it. Also I would it odd that swapping to a 1.8t made my steering much lighter, I don't know if my old power steering pump was dying but it was a massive difference considering the only thing changed was the pump.

Haenszel20v
02-11-2013, 09:39 AM
Early model b5 a4's had external dampeners. newer b5 a4's have internal. all b5 s4's have internal. s4 racks have a shorter steering bias as well as banjo bolt fitting...

Mad Cow
02-11-2013, 05:38 PM
..

I guess I hadn't looked closely enough at a facelift V6 then, my '99.5 is external and I assumed others would be too. Is there any difference in steering ratio between sport and non-sport? I've driven both and I could swear the sport one is less turns lock-to-lock.

Corrado_Guy
02-11-2013, 06:27 PM
The rack on the 1.8T, V6, S4 all have different part numbers so there is some difference which may be small or big. The V6 and S4 racks both seem to use a damper (although ETKA only claims 'V6' so take this for what it is worth) and they do not show any difference on the regular models and those with the sport package. The S4 does use different knuckles so this may also play a part but I am not sure about that. This is all according to ETKA and this was the complete rack and not individual parts such as tie-rods and so on.

Mad Cow
02-11-2013, 08:46 PM
Looks like you're right, the racks are different between AHA and APB. And it should be the rack itself because it only includes the inner tie rod, which is the same across all motors.

gmx
02-11-2013, 11:56 PM
..

Where;s that from? I've been trying to get rack ratios for ages including the RS4. Could never find concrete numbers.

Apart from that, the other difference in NA region was dampened (rubber bushed) TREs.

walky_talky20
02-12-2013, 05:41 AM
I compared the turns lock-to-lock on a 98 A4 1.8TQ Sport and my 2001 1.8TQ non-sport. They were the same. I do believe there is a quicker ratio out there, perhaps for the European sport models or maybe just the RS4.

Shhmaudi
02-12-2013, 12:15 PM
The steering on my s4 feels different from my 98 A4.S4 has more "feel/feedback" if that makes sense

nizmosx
02-12-2013, 12:20 PM
I actually have a 2000 a4 avant and it had a leaking steering rack when i bought it. The donor car i bought my new rack from was an s4. After it was installed i really didnt notice any differences. i slightly noticed a firmer steering wheel but that could be due to the fact my stock one was leaking badly. i wish i can chime in more as to the differences, but i didnt really notice enough of a differnce to tell everyone that it was a worthwhile mod. I just did it because it was readily available.

by the day my a4 becomes more and more of an s4. lol

mysman
02-13-2013, 05:39 AM
The steering on my s4 feels different from my 98 A4.S4 has more "feel/feedback" if that makes sense

Solid TREs used on the S4 vs. rubber on the A4, most people convert to solid for that reason.