2.7T v 4.2 A6

[Matt Evans]

Is there anything especially novel about the B6 S4 engine ?  The D2 A8 4.2
is spec'd to 300hp, the D2 S8 4.2 is specced at 360.  What makes the B6 S4
4.2 a 340hp motor?  How does it differ in tune from the 4.2 engine in the
other cars ?

On a similar vein, what were the differences between the B5 S4 2.7TT and the
A6 2.7 turbo motor ?  Were there any differences at all ?  Was the A6 a
single turbo ?

It seems like (relatively) lower displacement, forced induction, and
mechanical AWD are a strong audi heritage, certainly for S cars.  The B6 S4
only has one of the three.  (And honestly, it makes only 8 more hp than the
E46 M3 out of one additional liter, and is slower in a straight line with 2x
the launch traction).

Were the UrS4/UrS6 motors (AAN, right?) used in other Audi vehicles ?  BMW
has the tradition that Motorsport cars get motors that only show up in
motorsport cars, featuring significant technology changes that do not make
it into the other engines (individual throttles being the longest running
motorsport-only feature).  I am wondering if Audi has the same practice
(past or present), or if their S models simply borrow an engine that is
otherwise restricted to an uprange model?


> -----Original Message-----
> From: quattro-bounces at audifans.com 
> [mailto:quattro-bounces at audifans.com] On Behalf Of Tyson Varosyan
> Sent: Friday, December 31, 2004 10:24 PM
> To: 'Derek Daily'; Quattro at Audifans. Com (E-mail)
> Subject: RE: 2.7T v 4.2 A6
> 
> Some Car magazine, I think Car&Driver did a comperason 
> between the 2.7TT and
> the V8 S4s. The conclution was that although "out of the box" 
> the V8 was
> faster in every category (0-60, 0-100, 1/4mi), with minor 
> mods the V6TT
> outdone the V8. With a few more mods totaling less than 10k 
> it left the V8
> in the dust... I love turbos, I love what can be done with 
> them, I like
> working on cars. I guess it depends on what you have in mind...
> 
> That being said, I will drive all versons and configurations 
> of the S4 that
> I can find before I get mine.
> 
> Tyson Varosyan
> Technical Manager, Uptime Technical Solutions LLC.
> tyson at up-times.com
> www.up-times.com
> 206-715-TECH (8324)
> 
> UpTime/OnTime/AnyTime
> 
> -----Original Message-----
> From: quattro-bounces at audifans.com
> [mailto:quattro-bounces at audifans.com]On Behalf Of Derek Daily
> Sent: Friday, December 31, 2004 8:00 PM
> To: Quattro List
> Subject: 2.7T v 4.2 A6
> 
> 
> I have an S4 wagon.  I talked my good friend into a 4.2 with sports
> suspension and seating.  This is the nicest all around car I've
> driven to date.  The 2.7tt can be 'faster' in certain powerbands, but
> for driving around town and the fwy, the A6 chassis and V8 set up is
> great.  I've driven a number of similar (previous model) cars from
> bmw (530, 540, M5), mbz (E430, E55), saab...this is the one IMHO.
> 
> NOTE: Find one with the sport seats for sure...  Only issue is MPG if
> that's a big concern, the 20mpg+ of the 2.7tt becomes more
> intriguing.  The V8 drinks in town...fwy is better...
> 
> DD
> 
> 
> 
> From: "Eric Langheinrich" <eric at xmission.com>
> Subject: 2.7 versus 4.2 A6????
> To: <quattro at audifans.com>
> Message-ID: <004201c4ef69$78c9c470$1500a8c0 at ISAIL>
> Content-Type: text/plain;	charset="iso-8859-1"
> 
> I'm looking to replace my current 2.8 A6 with either a 2.7T or a 4.2.
> 
> Is there a good reason to go one way or the other?
> 
> =====
> Derek Daily
> dtdaily at yahoo.com
> 
> 
> 
> 
> 
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