pressure pump (produced as needed by
an electric fuel pump in the fuel tank).
Fuel high pressure (produced by a
mechanical single piston pump) at
approximately 85 degree coolant
temperature.

3.0 to 10.5 bar
pressure
30 to 150 bar
pressure

Fastener Tightening Specifications

1)

Nm
40
2
10
3.5
4.5
27
10
40
40
20
27
20
20

Engines –
2.0L CAEB, CPMA

Component
Adapter between connecting piece and high pressure
fuel line
Air duct-to-lock carrier
Cold start injector
E-Box cover
Engine Speed (RPM) sensor
Fuel pressure sensor
Fuel rail to intake manifold
Fuel supply line connectors 1)
Fuel supply line connection on the fuel rail 1)
Fuel supply line union nut
High pressure fuel line
High pressure fuel line to adapter
High pressure pump
First tighten the bolts diagonally hand-tight, then to 5 Nm
and then to 20 Nm.
Intake air temperature sensor
Intake manifold
Intake manifold support nut
Intake manifold support bolt
Knock Sensor (KS)
Oxygen Sensors (O2S)
Throttle valve control module

9
9
10
23
20
55
10

Replace fastener(s).

Audi A5/S5 Quick Reference Specification Book

•

November 2012

41

Ignition/Glow Plug System – 2.0L CAEB,
CPMA
Technical Data
Engine data
Idle speed
Idle speed cannot be adjusted, it is
regulated by idle stabilization
RPM limited by switching off fuel
injectors and closing throttle valve
Ignition timing is regulated by control
module. It is not possible to adjust the
ignition timing.
Ignition System

Ignition sequence

2.0L Turbo FSI engine
640 to 800 RPM
Approximately 6500 RPM
3.0 to 10.5 bar pressure
Single coil ignition system with
4 ignition coils (output stages
integrated), that are connected
directly to spark plugs via the
ignition cables; The ignition coils
can be pulled out of the cylinder
head using ignition coil puller
- T40039 1-3-4-2

Fastener Tightening Specifications
Component
Camshaft Position Sensor (CMP)
Knock Sensor (KS)
Spark Plug

42

Audi A5/S5 Quick Reference Specification Book

Nm
10
20
30

•

November 2012

Engine Mechanical - 3.0L CGXC
Engine –
3.0L CGXC

General, Technical Data
Engine Number Location

The engine number (engine code and serial number) is
located on the top front of the cylinder block, below the
right cylinder head (Æ). Engine codes beginning with C are
four-digit. The first 3 digits of the engine code indicate the
displacement and the mechanical structure of the engine.
The fourth digit describes the engine output and torque.

Audi A5/S5 Quick Reference Specification Book

•

November 2012

43

Engine Data
Code letters
Displacement
liter
Output
kW at RPM
Torque
Nm at RPM
Bore
diameter mm
Stroke
mm
Compression ratio
RON
at least
Fuel injection and ignition system
Ignition sequence
Exhaust Gas Recirculation (EGR)
Supercharger
Knock Sensor (KS)
Charge Air Cooler (CAC)
Oxygen Sensor (O2S) regulation
Variable valve timing
Variable intake manifold
Secondary Air Injection (AIR)
system
Valves per cylinder
1)

CGXC
2.995
245/5500 to 7000
440/2900 to 5300
84.5
89.0
10.5
95 1)
Simos
1-4-3-6-2-5
No
Supercharger
2 sensors
Yes
2 sensors before catalytic converter
2 sensors after catalytic converter
Intake
Yes
Yes
4

Unleaded RON 91 is also permitted but performance is reduced.

Engine Assembly – 3.0L CGXC
Fastener Tightening Specifications
Component
Bolts and nuts

Engine mount 1)
Engine support
Heat shield
Hydraulic oil hose bracket nut
Mounting plate
Subframe
1)

Fastener
size
M6
M7
M8
M10
M12
-

Nm
9
15
20
40
65
90 plus an
additional 90°
(¼ turn)
40
10
9
20
55

-

Replace fastener(s).

44

Audi A5/S5 Quick Reference Specification Book

•

November 2012

Engine –
3.0L CGXC

Engine to Manual Transmission
Tightening Specifications

Item

Bolt

Nm

1
2-6
7

M10 x 50 1)
M12 x 100 2)
M12 x 125 2)

65
30 plus an additional 90° (¼ turn)
30 plus an additional 90° (¼ turn)

8 and 11
9 and 10
A

15 plus an additional 90° (¼ turn)
M10 x 60 2)
M10 x 95 2)
15 plus an additional 90° (¼ turn)
Alignment sleeves for centering

• 1) Bolt class 10.9, the steel bolt may be used again unlimited number of times.
• 2) The aluminum bolts can be used 2 times.

Audi A5/S5 Quick Reference Specification Book

•

November 2012

45

Engine to S tronic Transmission 0B5
Tightening Specifications

Item

Bolt

Nm

1
2-6
7

M10 x 50 1)
M12 x 100 2)
M12 x 125 2)

65
30 plus an additional 90° (¼ turn)
30 plus an additional 90° (¼ turn)

8
9 and 10
A

15 plus an additional 90° (¼ turn)
M10 x 60 2)
M10 x 95 2)
15 plus an additional 90° (¼ turn)
Alignment sleeves for centering

• 1) Bolt class 10.9, the steel bolt may be used again unlimited number of times.
• 2) The aluminum bolts can be used 2 times.

46

Audi A5/S5 Quick Reference Specification Book

•

November 2012

Crankshaft, Cylinder Block – 3.0L CGXC
Engine –
3.0L CGXC

Allocation of Crankshaft Bearing
Shells for Cylinder Block

Bearing shells with the correct thickness are allocated to
the cylinder block in the factory. Colored dots on the sides
of the bearing shells identify the bearing shell thickness.
Allocation of the bearing shells to the cylinder block is marked
by a letter on the respective bearing on the guide frame.
Letter on guide frame
R
G
B
S

Audi A5/S5 Quick Reference Specification Book

Color of bearing
Red
Yellow
Blue
Black

•

November 2012

47

Allocation of Crankshaft Bearing
Shells for Guide Frame

Bearing shells with the correct thickness are allocated to
the guide frame at the factory. Colored dots on the sides of
the bearing shells identify the bearing shell thickness.
Allocation of the bearing shells to the guide frame is marked on
the flywheel flange of the crankshaft by a row of letters. The first
letter represents bearing 1, the second letter is for bearing 2, etc.
Letter on guide frame
R
G
B
S

48

Color of bearing
Red
Yellow
Blue
Black

Audi A5/S5 Quick Reference Specification Book

•

November 2012

Nm
50 plus an
additional 90°
(¼ turn)
60 plus an
additional 90°
(¼ turn)
9
9
42
40
40
20 plus an
additional 90°
(¼ turn)

Drive plate 1)
Oil pressure regulation valve
Piston cooling oil spray jet
Ribbed belt idler roller 3)
Ribbed belt idler roller 2)
Ribbed belt tensioning damper
Vibration damper 1)

1)
2)

3)

Replace fastener(s).
For bolt tightening clarification, refer to ElsaWeb, Ribbed Belt Drive Overview,
item 6.
For bolt tightening clarification, refer to ElsaWeb, Supercharger Ribbed Belt Drive
Overview, item 2.

Audi A5/S5 Quick Reference Specification Book

•

November 2012

49

Engine –
3.0L CGXC

Fastener Tightening Specifications
Component
Connecting rod 1)

Ribbed Belt Sealing Flange Tightening Specification

Component
Tighten bolts (Æ) in a diagonal sequence

50

Audi A5/S5 Quick Reference Specification Book

Nm
9

•

November 2012

Engine –
3.0L CGXC

Guide Frame Tightening Specifications

Step
1
2
3

1)

Component
Tighten bolts 1 through 16 in sequence 1)
Tighten bolts 1 through 16 in sequence
Replace and tighten bolts 17 through 31 in
sequence (for guide frame sealing surfaces on
cylinder block)

Nm
50
an additional
90° (¼ turn)
23

Replace fastener(s).

Audi A5/S5 Quick Reference Specification Book

•

November 2012

51

Crankshaft Dimensions
Honing dimension in
mm

Crankshaft bearing
pin diameter

Basic dimension

65.000

-0.022
-0.042

Crankshaft
connecting rod
journal diameter
56.000
-0.022
-0.042

Piston Ring End Gaps
Piston ring dimensions
in mm
1st compression ring
2nd compression ring
Oil scraping ring
1)

New

Wear limit

0.20 to 0.30
0.50 to 0.70
0.25 to 0.50

0.80
0.80
– 1)

Not determined.

Piston Ring Clearance
Piston ring dimensions
in mm
1st compression ring
2nd compression ring
Oil scraping ring

New

Wear limit

0.04 to 0.08
0.03 to 0.07
0.02 to 0.06

0.20
0.20
0.15

Piston and Cylinder Dimensions
Honing dimension
in mm
Basic dimension
1)

Piston diameter
84.49 1)

Cylinder bore
diameter
84.51

Dimension without graphite coating (thickness 0.02 mm). The graphite coating
wears away.

52

Audi A5/S5 Quick Reference Specification Book

•

November 2012

Fastener Tightening Specifications
Component
Balance shaft belt pulley side
Balance shaft chain sprocket 1)

Nm
60
15 plus an
additional 90°
(¼ turn)