[V8] S4 plus - no! Breakdown of Euro C4 S-cars

[Bastian Homburg]

nope. such a thing as an "S4 plus" never existed, and the S6 plus was 
something different altogether.

As far as "S-cars" variants of the C4 are concerned, we Europeans got:

pre-facelift:
  - S4 2.2 sedan or Avant with AAN  l520vt engine. 230 hp, UFO brakes, 
five-speed, later six-speed as option or 4-sp auto. Built from 1991 
until the C4 facelift in mid-1994.
  - S4 4.2 sedan or Avant with ABH 280 hp 32V V8 engine. HP2 brakes, 
6-speed or 4sp ZF auto. Essentially same drivetrain as in V8 (manual 
transmission has 0.73 instead of 0.68 ratio in VIth gear though). Built 
from some time in 1992 until the facelift in mid-1994.

post-facelift:
  - S6 2.2 sedan or Avant with AAN  l520vt engine. 230 hp, HP2 brakes, 
six-speed or 4-sp auto. Built from mid-1994 until the C4 ceased 
production in July1997. Only variant sold in North America.
  - S6 4.2 sedan or Avant with 290 hp 32V V8 AEC engine. HP2 brakes, 
6-speed or 4sp ZF auto. This engine is very similar to the ABH (no 
adjustable valve timing, retains distributor ignition) and just differs 
in minor details. Conforms to "EuroII" emissions standard. Built from 
mid-1994 until the C4 ceased production in July 1997.
  - S6 plus 4.2 sedan or Avant (only about 100 sedans were built, and 
850 or so Avants). Limited-production, made not by Audi but by "Quattro 
GmbH" subsidiary like the later RS cars (Porsche was not involved at 
all). Engine code AHK, which was a thoroughly massaged and heavily 
revised variant of the corporate 4.2 that preempted a lot of the engine 
changes for in the later S8. Differences include solid lifters for 
intake valves, variable induction, distributorless ignition, 11.6:1 
compression ratio,7250 rpm rev limit, true dual exhaust with one cat and 
O2 sensor per cylinder bank that did away with the "X" cross-pipe and 
was lifted straight into the S8. Six-speed manual only (no auto 
offered!), and the HP2 brakes were increased to 323mm rotor size. Built 
from mid-1996 until the C4 ceased production in July 1997.



Ingo Rautenberg wrote:
> Wasn't that referred to as the S4 Plus and later the S6 Plus?
>
> -Ingo
>
> On Sep 14, 2010 6:41 PM, "S_Matus"<scott_matus at yahoo.com>  wrote:
>    
>> Nice to know that 1992-94 S4 can accept a V8 implant.
>>
>> Scott.
>>