I just oredered the LLtek air intake, getting rims and some exteriror styling. What is the best I can do to full this up from 300 hp?? Best barke options for 19" Rims? amy other suggestions?

Thanks, guys!

Well, GIAC engine and tiptronic chips will boost you up to about 320 or so, then you can add an exhaust system which is good for about another 15-20 hp. I had the supersprint system on my 03 4.2... It dynoed at 346hp on 100 octane gas (with an internal problem I might add)...Thats about all unless you want to open her up and replace the cams with S6 ones and change the final drive ratio.. Also, running on the hy-est octane in your area helps a bit too..

BTW. The cold air intake is useless for your motor. Better to leave it off.. The motor gets plenty of air.. its the other bits that need help..

Wow, I dream in RS6 Visions! Thanks, that's exactly the tips I was looking for.

Where do I get the S6 cams? How much and how much HP gain? Is it that noticeable by the dealer?

The 4.2 in the S6 is the same basic motor with higher performance cams and a few other changes to get 40 more HP and some additional torque than the A6 4.2. I suppose you could order a set thru Audi parts dept but they wont do the instal. You would have to find an indie.. prolly not an easy mod as the ECU would no doubt have to be changed. Start with the chips and exhaust and see how you like that ..

I'm curious how they compare to these for the A8. The valve timing below is from the Bentlety, 1mm valve lift:

.......................... ABZ ...... AEW ... AKB/AUX
IVO after TDC ....... 10 ......... 10 ....... 25
IVC after BDC ....... 40 ......... 25 ....... 45
EVO before BTC ... 30.5 ........ 30 ....... 38
EVC before TDC ..... 2 .......... 10 ........ 8

The ABZ 4.2L motor is 300 hp @ 6000 rpm, the AKB and AUX 4.2L motors are 310 hp @ 6200. The AEW is the 3.7L motor from the FWD A8 and is 230 hp @ 5500 rpm.

Unfortunately, my Bentley doesn't list the cam specs for the S8 motor. Actually, it Bentley contains a typo and lists the AKB/AUX motors twice. If anyone has a later Bentley with the S8's cam specs, I'd like to see them.

I have a Euro manual that probably has the specs.....what section is it in so I don't have to find it?

Engine Mechanical
00 General, Technical Data
Engine Data

page 00-3 of our Bentley

Do you have the European A6/S6 manual, the A8/S8 manual, or both?

Technical data
Engine data


Code letters
ABZ
AEW
AHC
AKG

Capacity
l
4.172
3.697
4.172
4.172

Output
kW at rpm
220/6000
169/5500
250/6600
220/6000

Torque
Nm at rpm
400/3300
315/2700
410/3500
400/3300

Bore
øin mm
84.5
84.5
84.5
84.5

Stroke
mm
93.0
82.4
93.0
93.0

Compression
10.8
10.6
11.3
10.8

RON/BON 98/88 recommended min. RON
95
95
98
95

Injection system
Motronic
Motronic
Motronic
Motronic

Ignition
Motronic
Motronic
Motronic
Motronic

Knock control
yes
yes
yes
yes

Self-diagnosis
yes
yes
yes
yes

Lambda control
yes
yes
yes
yes

Catalytic converter
yes
yes
yes
yes

Turbocharging
no
no
no
no

Emission standard
EU 2
EU 2
EU 2
D 3




Code letters
ABZ
AEW
AHC
AKG







Valve timing






with 1 mm valve lift and 0 mm valve play





Inlet opens after TDC

10°
10°
7°
10°

Inlet closes after BDC
40°
25°
46°
40°

Exhaust opens before BDC
30.5°
30°
31°
30.5°

Exhaust closes before TDC
2°
2°
2°
2°


















































Code letters
AKJ
AKH

Capacity
l
3.696
4.172

Output
kW at rpm
169/5500
250/6600

Torque
Nm at rpm
315/2700
410/3500

Bore
øin mm
84.5
84.5

Stroke
mm
82.4
93.0

Compression
10.6
11.3

RON/BON 98/88 recommended min. RON
95
98

Injection system
Motronic
Motronic

Ignition
Motronic
Motronic

Knock control
yes
yes

Self-diagnosis
yes
yes

Lambda control
yes
yes

Catalytic converter
yes
yes

Turbocharging
no
no

Emission standard
D3
D3


Code letters
AKJ
AKH





Valve timing




with 1 mm valve lift and 0 mm valve play



Inlet opens after TDC

10°
7°

Inlet closes after BDC
25°
46°

Exhaust opens before BDC
30°
31°

Exhaust closes before TDC
2°
2°

I have the Euro manual.....will have to look at it some more.

Code letters: BAS

Displacement, Liters: 4.163

Output, kW @ RPM: 221/6200

Torque, Nm @ RPM: 380/2600-4700

Bore dia., mm: 84.5

Stroke, mm: 92.8

Compression ratio: 11.0

RON: 98

Injection/ignition system: Bosch Motronic

Ignition sequence: 1-5-4-8-6-3-7-2

Knock sensor control: Yes

Exhaust Gas Recirculation (EGR): No

Intake manifold change-over: Yes

Camshaft adjustment: Yes

Secondary air system: Yes

Valve timing
-----------
Intake valve opens after TDC: 42

Intake valve closes after TDC: 62

Exhaust valve opens before BDC: 40

Exhaust valve closes before BDC: 10

"camshafts with greater lift AND modified timing ensure optimum cylinder filling, with the inlet valve timing matched to the engine's relevant operating point by a hydraulic camshaft actuater"

Hi,

I'm from Poland, to first time in this forum. I drive audi S6 C5 40V ANK-motor and I'm looking for data for my car like this, that I found, but they are not for my ANK engine. This data comes from Bentley Official Factory Repair Manual:


AYS Camshafts (S8 V8 4.2 40v)
Intake open after TDC 25º
Intake close after BDC 45º
Exhaust open before BDC 38º
Exhaust close before TDC 8º

Do you have and can check this data for my ANK- motor pleas?
I can't find it at all and I don't have this Bentley Book :).
My engine is allredy by mechanic, who trys to set up it.

Thanks in advance!
Marcin