2004 PORSCHE 911 TURBO manual transmission

The primary objective for every
911 Turbo is to challenge the
limits of technical feasibility. Not
only in terms of performance
and dynamics, but also when it
comes to ride comfort. On this
latest evolution, we’ve completely
redesigned a number of systems
and components. The result builds
on the achievements of the
previous 911 Turbo – a car widely
acknowledged as the ultimate in
sportscar design.
As you would expect, the new 911 Turbo meets the highest
expectations in terms of engine
performance. The classic flat-six
unit develops 353 kW (480 bhp)
at 6,000 rpm from a 3.6-litre
displacement. Maximum torque
of 620 Nm is available between
1,950 and 5,000 rpm. To achieve
that capability, we’ve combined
VarioCam Plus with twin turbo-
charger units featuring Variable
Turbine Geometry (VTG) –
a totally new technology on apetrol-
engined car. With a standard
manual
gearbox, the new 911 Turbo
requires just 3.9 seconds to reach
100 km / h (62 mph). Equipped
with the latest optional Tiptronic S
transmission, the car is 0.2 seconds
quicker on the standard sprint.
Benchmark times to 200 km / h
(124 mph) are 12.8 and
12 . 2
seconds, respectively. Maximum
speed with either transmission is
310 km / h (193 mph).
One of the most important engine
technologies, appearing for the
first time on a Porsche, is Variable
Turbine Geometry (see page 32).
The main components on this
system are the adjustable guide
vanes which channel the exhaust
flow onto the turbines, enabling
higher turbine speeds at lower
engine rpm. The most difficult
challenge when developing this
technology was the high exhaust-
gas temperature of around
1,000 ºC, which is unique to a
petrol engine. This enormous
thermal load is considerably
greater than the 700 ºC typically
encountered on a diesel-powered
car. It was only possible to
bridge this gap using materials
developed for aerospace
applications. The primary benefitsof Variable Turbine Geometry
include faster response, higher
torque output from lower engine
speeds, and greater top-end
power. Maximum torque is also
available over a wider engine
speed range. By eliminating the
problem of ‘turbo lag’, the
traditional weakness of the
turbocharged engine is finally
a thing of the past.
· 16 ·· 17 ·The new 911 Turbo |
The new 911 Turbo
Pioneering technology, dependable results.
Engineering the new 911 Turbo.

The new 911 Turbo is a prime
example of the ongoing evolution
of Porsche engineering. For
another step up in all-round
performance, there’s the optional
Sport Chrono Package Turbo.
This integrated system provides
simultaneous enhancement
for engine, chassis and optional
Tiptronic S transmission.
Key features include a digital and
analogue timer located centrally
on the dashboard, a ‘Sport’ select
button on the centre console,
a performance display in the
standard Porsche Communication
Management (PCM), a personal
memory function in PCM, and
a special ‘overboost’ function
unique to the new 911 Turbo.When ‘Sport’ mode is selected,
the engine management system
applies a new set of variables
creating a much more aggressive
response. A modified throttle
map relates the pedal position in
the footwell to a wider angle
of opening on the throttle. As a
result, the engine has a much
more positive reaction to every
pedal input. In the higher gears,
a hard rev-limiter helps protect
the engine under power.
Under full acceleration, the
‘overboost’ function provides a
temporary increase in available
boost pressure of approximately
0.2 bar. The overboost is applied
across the medium rev range,
raising the standard 620 Nm of
torque to as much as 680 Nm.
The modified throttle is matched
by PASM, which also switches
to ‘Sport’ mode. The dampers
become firmer, enabling fasterturn-in as well as better contact
with the road.
On vehicles with Tiptronic S,
the basic gearshift pattern is
automatically switched to high-
performance mode. The gearshift
action is virtually instantaneous,
while the shift points are timed for
maximum acceleration. Lift off
the throttle – even at high revs –
and the system automatically
shifts down to apply engine
braking. There are no unwanted
upshifts in manual mode when
approaching the engine rev limit.
Since the driver has control over
every upshift, the handling of
the car is smooth and assured,
particularly when braking for a
corner.
To minimise assistance from
PSM, the trigger threshold for
this system is raised. The result
is a more natural and involving
response to both lateral andlongitudinal forces. Mid-corner
agility is considerably enhanced,
with greater scope for oversteer
on turn-in and exit. This added
freedom is particularly apparent
in lower-speed sequences and
bends. For even greater driving
pleasure, the all-wheel drive
system applies a greater
proportion of drive torque to the
rear.
· 60 ·· 61 ·The new 911 Turbo |
Chassis
‘Sport’ button on centre console
Sport Chrono Package Turbo.
Additional power, precision timing.

· 126 ·· 127 ·
Technical data911 Turbo
WeightsManual/ Tiptronic S
Unladen weight (DIN)1,585 kg/1,620 kg
Unladen weight (EC)*1,660 kg/1,695 kg
Permissible gross weight1,950 kg/1,980 kg
PerformanceManual/ Tiptronic S
Top speed310 km / h/310 km / h (193 mph/193 mph)
0 –100 km / h (0 – 62 mph)3.9 secs/3.7 secs
0 –160 km / h (0 – 99 mph)8.4 secs/7.8 secs
0 – 200 km / h (0 –124 mph)12.8 secs/12.2 secs
Flexibility 80 –120 km / h 3.8 secs/3.5 secs
(50 –75 mph) in second highest gear
Fuel consumption/emissionsManual/ Tiptronic S
In accordance with 80 / 1268 /EC as valid at time of going to press**
Urban18.8/19.8 l/100 km (15.0/14.3 mpg)
Extra urban9.5/9.6 l/100 km (29.7/29.4 mpg)
Combined12.8/13.6 l/100 km (22.1/20.8 mpg)
CO2emissions307/326 g/km
Dimensions /aerodynamics
Length4,450 mm
Width1,852 mm
Height1,300 mm
Wheelbase2,350 mm
Luggage compartment volume105 litres
Tank capacity 67 litres
(refill volume)
Drag coefficient
0.31
911 Turbo
Engine
Cylinders6
Displacement3,600 cm3
Max. power (DIN)353 kW (480 bhp)
at6,000 rpm
Max. torque620 Nm (with overboost: 680 Nm)
at1,950 – 5,000 rpm (with overboost: 2,100 – 4,000 rpm)
Compression ratio9.0 :1
Transmission
LayoutAll-wheel drive with electronically controlled multi-plate clutch
Manual gearbox6-speed
Tiptronic S (optional)5-speed
Chassis
Front axleMcPherson-strut suspension
Rear axleLSA multi-link suspension
SteeringVariable steering ratio, power-assisted (hydraulic)
Turning circle10.9 m
Brakes6-piston monobloc aluminium fixed calipers at front, `
4-piston monobloc aluminium fixed calipers at rear,
discs internally vented and cross-drilled
Vehicle stability systemPSM (updated version)
Anti-lock braking systemABS 8.0
WheelsFront: 8.5J x 19 ET 56
Rear: 11J x 19 ET 51
Ty r e sFront: 235/35 ZR 19
Rear: 305/30 ZR 19* Weight is calculated in accordance with the relevant EC Directives and is valid for standard specification vehicles only.
Optional equipment means greater weight. The figure given includes 68 kg for the driver and 7 kg for luggage.
** Provisional data only. Final data unavailable at the time of going to press.

L
Leather 104, 112
Limited-slip differential,
mechanical 56
Loudspeakers 90
LSA concept 53
Lubrication 31
Luggage compartment 84
M
Manual gearbox 45
Materials 95
MOST
®bus 90
MP3 playback 86
Multifunction steering wheel 78
Multi-plate clutch,
electronically controlled 48
N
Navigation expansion module 87
Navigations system 87
Noise 97
O
On-board computer 88
On-board diagnostics 40
Optional equipment 108
P
ParkAssist 82
Performance display 60
Personalisation 98
Porsche Active Suspension
Management (PASM) 56
Porsche Ceramic
Composite Brake (PCCB) 70
Porsche Communication
Management (PCM) 86
Porsche Side Impact
Protection (POSIP) 75
Porsche Stability
Management (PSM) 58
Porsche Traction
Management (PTM) 48
R
Rear wiper 83
Recycling 95
Roof transport system 84
S
Safety, active 66
Safety, passive 72
Seats 80
Seats, rear 81
Service 122
Servicing 44, 97
Sport button 60
Sport Chrono Package Turbo 60Sports seats 80
Sports seats, adaptive 80
Steering 54
Stereo lambda control 44
Sunroof, slide/tilt 83
Suspension 52
T
Tandem brake booster 69
Technical data 126
Telephone 89
Timer 60
Tiptronic S 46
Transmission 126
Tyre Pressure
Monitoring (TPM) 55
V
Variable Turbine
Geometry (VTG) 32
Variable valve timing 39
VarioCam Plus 38
Vehicle tracking system 84
W
Water- cooling 40
‘Welcome Home’ lighting 82
Wheels 55
Wood, macassar 115
Wood, sycamore 116
· 129 ·
A
Air conditioning, automatic 79
Airbags 74
Alloy engine 30
All-wheel drive 48
Aluminium Look 118
Antenna diversity 88
Anti-theft protection 84
Audio system 86, 119
AudioPilot
®91
Axle concept 52
Axle, front 52
Axle, rear 53
B
Bi-Xenon lighting 66
Bodyshell 72
BOSE
®Surround
Sound System 90
Boxer engine 28, 30
Braking system 68
C
Carbon 117
Catalytic converters 44
CD autochanger 89, 119
Ceramic brakes 70
Child seats 81
Colours 100
Colours, interior 104
Colours, special interior 105
Communication 119
Cross-flow cooling 40
Cruise control 83
D
Design 20
Driver memory function 63
Dry-sump lubrication 31
DVD navigation drive 87
E
Electronic logbook 89
Emissions control 94
Engine management system 40
Exhaust system 44
F
Factory collection 120
Fire extinguisher 82, 111
Foglights 67
Fuel injection, sequential 42
Fuel system 97
G
GPS navigation system 87
GSM telephone 89
H
HomeLink®83
Hot-dip galvanised sheet steel 73
I
Ignition 43
Instruments 79
Interior 78
K
Knock control,
cylinder-specific 40
· 128 ·
Index