2014 PORSCHE 911 wheel

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When you know your strengths,
it’s easy to acquire new ones.

The 911 Carrera 4.
One thing is for certain. When it comes to
finding your own strengths, it always
helps to know who you are and where you
come from. Where the 911 is concerned,
we call this Porsche Identit y.
The immense power that is embodied
in this strong identit y is immediately
apparent in the all-wheel-drive
911 Carrera 4. Its Porsche Traction
Management (PTM) converts power
directly into motion. Not in a heav y-
handed way, but intelligently. Among
other variables, sensors monitor the
rotational speeds of all four wheels,
the vehicle’s lateral and longitudinal acceleration and the steering angle. In
this way, the active all-wheel drive can
continually respond to different driving
situations and precisely distribute drive
forces bet ween the front and rear axles.
Tuned to provide poised and balanced
handling during performance driving,
PTM quickly and clearly demonstrates,
especially in the wet and snow, what

we at Porsche understand by traction.
Expressed in simple terms, the
911 Carrera 4 is self-assured. An
assuredness that has been assisted by
engineering and aesthetic details
such as the wider body – the rear wings are 44 mm wider than those of the

911 Carrera – the 295 mm wide rear
tyres, the special air intakes, the
illuminated rear light strip with taillights
and parking light function, and distinctive
side skirts.
One of its inherent strengths is, of course,
its engine: the 3.4-litre, six-cylinder
horizontally opposed power unit delivers
257 kW (350 hp) at 7,400 rpm and
accelerates the 911 Carrera 4 from

0 to 100 km/ h in just 4.9 seconds. Top
speed is 285 km/ h.

Let ’s now bring the power of identit y
to bear on the road. With the aid of the
7-speed manual transmission or the
optional PDK.
Both feature sports ratios
for gears 1 to 6 and a long-ratio 7th
gear for fuel efficiency.
The 911 has many strengths. The
911 Carrera 4, with its superlative
traction, dynamic performance and
safet y, has acquired even more.

Why not take your seat behind the wheel
and make these strengths your own?
For fuel consumption, CO
2 emissions and efficiency class, please refer to pages 141/143.
S trength | The 911 Carrera 4

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Switchbacks, hairpins, zigzags, S-bends...
There are countless reasons for having intelligent all-wheel drive.

The 911 Carrera 4S.
Steadfastness. Another apparent Porsche
contradiction. But whilst it ’s true that
sports cars are all about movement,
about surging forwards, it ’s even more
important to stay calm at all times,

to act with composure and never rashly.
So it ’s reassuring that you can rely

on the handling characteristics of the
911 Carrera 4S.
The Porsche Traction Management

(PTM) active all-wheel- drive system is
particularly dependable, especially

when driving the car at the limits of
performance. To achieve this, our
engineers have travelled right to the
physical boundaries – and extended

them. PTM now ensures that the car is poised and balanced, and really comes
into its own when adopting a sport y
driving st yle or travelling in extreme
weather conditions.
At the rear, the car is the personification
of roadholding, with its 44 mm wider
body and broader track by comparison
with the rear-wheel- drive 911 Carrera
models, and with road-hugging 305 mm
wide rear wheels. The seamless
horizontal taillight strip continues the
same st yling language. The all-wheel-
drive model is also recognisable from

the front, thanks to its dynamically
accentuated cooling air intakes in the
front end.
Though the car is practically at one with
the ground, it cannot keep still. This is
unsurprising when it is powered by a

3.8-litre engine developing 294 kW
(400 hp) at 7,400 rpm. When combined
with optional Porsche Doppelkupplung
(PDK), this power unit can accelerate the
car to 100 km/ h in a mere 4.3 seconds.
And continue up to a maximum speed of
297 km/ h.
Nevertheless, the 911 Carrera 4S
demonstrates that this level of
performance needn’t come at the
expense of fuel consumption and CO2
emissions. Fuel-efficient technologies,
such as electrical system recuperation,
For fuel consumption, CO
2 emissions and efficiency class, please refer to pages 141/143.
S trength | The 911 Carrera 4S
auto start/stop – both integrated as
standard – and the ‘coasting’ function of
PDK, prove that Porsche is continually
resolving conflicting aims by means of
Intelligent Performance.
Where safety is concerned, the mono -
bloc fixed brake calipers at the front of
the S models have six pistons instead
of four, whilst the brake pads are 10 %
larger. The result is even shorter braking
distances. Proof that, at Porsche, safet y
is an integral part of performance, not its
polar opposite.
Steadfast through and through.
Corner after corner.

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which displays superlative performance.
The 0 to 100 km/ h sprint is completed

in 5.1 seconds, for example. And it boasts
a top speed of 282 km/ h.
When it comes to traction, however,
composure and reason prevail in

the form of the Porsche Traction
Management (PTM) active all-wheel-

drive system. Working together with
Porsche Stability Management (PSM),
PTM ensures excellent levels of stability
and safet y. So you can give free rein to
your emotions. Even in the wet and snow.
It may come as a surprise to you, but our
engineers are very emotional people.
And clear thinkers. There is no conflict
bet ween these t wo traits. On the contrary,
they are ideal qualifications for those
tasked with the development of a
cabriolet that is more than just a fair-
weather car: the 911 Carrera 4 Cabriolet.
Entirely without contradiction, it
combines the thrills of open-top driving
with outstanding roadholding.
May we now appeal to your emotions?
Here goes. The 911 Carrera 4 Cabriolet is
powered by a 3.4-litre boxer engine
developing 257 kW (350 hp) at 7,400 rpm,
S trength | The 911 Carrera 4 Cabriolet
There’s a lot of emotion in engineering.
Such as that unique cornering feel.

The 911 Carrera 4 Cabriolet.
The hood of the 911 Carrera 4 Cabriolet
is able to adapt to the weather and your
mood in precisely 13 seconds. That ’s
all the time it needs to open or close
at road speeds of up to 50 km/ h.
Magnesium support elements make the
hood light weight, yet extremely rigid and
robust. An integral wind deflector is
fit ted as standard. Electrically powered,
it extends in just t wo seconds.
There’s a feeling of pride that the fabric
hood creates the same elegant silhouet te
as that of the 911 Coupé models. The
powerful proportions – the body that is 44 mm wider at the rear, the broader
rear track and 295 mm wide rear t yres –
are characteristic of all-wheel-drive
design. All this combines to create that
unique Porsche cornering feel.
We think that it ’s bet ter to play out

your emotions than to conceal them.
The 911 Carrera 4 Cabriolet.
For fuel consumption, CO
2 emissions and efficiency class, please refer to pages 141/143.

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Which vital ingredients do you need to
experience moments of true happiness?
It ’s our conviction, at least, that you need
impressive roadholding. Plus safety,
reliabilit y and faith in technology that won’t
let you down when you need it most.
Because only when we have peace of
mind are we truly free.
All these ingredients have been brought
together in the 911 Carrera 4S Cabriolet.
The car, powered by a 3.8-litre direct fuel
injection (DFI) engine with a maximum
output of 294 kW (400 hp) at 7,400 rpm,
sprints from 0 to 100 km / h in
4.7 seconds and boasts a top speed of
296 km/ h.
Strength | The 911 Carrera 4S Cabriolet
The strength of identity can be measured after all.
In moments of happiness.

The 911 Carrera 4S Cabriolet.
The car’s ‘happiness hub’, however, can
be found in the perfected Porsche
Traction Management (PTM) active all-
wheel-drive control system. Handling is
poised and balanced, particularly when
the car is being driven at its limits. This
makes controlling the car even easier
and driving even more pleasurable.
The hood of the 911 Carrera 4S Cabriolet
lets you open up to the open road. The
fabric hood featuring magnesium elements
is light weight, yet robust and extremely
rigid. It opens in just 13 seconds at road
speeds of up to 50 km/ h. When closed,

it shows off an aerodynamically optimised
silhouet te that has a drag coefficient of just 0.31. Which is also why you can hear
hardly any wind noise.
You can certainly hear the engine though.
The sound is – and remains –
unmistakably Porsche. A crucial quality
for a strong identit y.
It’s possible, of course, to describe
moments of happiness. But it’s far

bet ter to experience them first hand.
The 911
Carrera 4S Cabriolet.
For fuel consumption, CO2 emissions and efficiency class, please refer to pages 141/143.

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T
emperament
| Engine
Engine cross section: 3.8
-litre boxer engine
911 Carrera S models: 294 kW (400 hp) at 7,400 rpm, 440 Nm at 5,600 rpm

1. High - pressure pump
2. High - pressure injector
3. Ignition rod module
4. Camshaf t controller
5. Valve lif t adjustment switch valve
6. Switch tappet with integrated valve clearance
compensation
7. Intake camshaf t
8. Intake valves
9. Valve spring
10. Combustion chamber with Alusil cylinder liner
surface
11. Forged aluminium piston
12. Forged connecting rod
13. Crankshaf t
14. Water pump
15. Air-conditioning compressor
16. Power steering pump (in conjunction with PDCC)
17. Vibration damper
18. Alternator pulley with freewheel
19. Hydraulic belt tensioner
20. Resonance valve
21. Resonance distributor
22. Resonance valve actuator
23. Intake manifold with integrated sound chamber
24. Electronically controlled throt tle valve
25. Oil filter
26. Electronic map -controlled thermostat
27. Vacuum pump
28. Coolant jacket
29. Crankcase breather
30. Timing chain
31. Star ter
911 Carrera models: 257 kW (350 hp) at 7,400 rpm, 390 Nm at 5,600 rpm
The 3.4-litre engine.
The 911 Carrera base models are
equipped with a 3.4-litre boxer engine
with direct fuel injection (DFI) and
VarioCam Plus. It develops 257 kW
(350 hp) at 7,400 rpm and the maximum
torque is 390 Nm at 5,600 rpm.
For the 911 Carrera with 7-speed manual
gearbox, this means acceleration from

0 to 100 km/ h in 4.8 seconds and a top
speed of 289
km/ h. The 911 Carrera 4
accelerates to 100 km/ h in 4.9 seconds
and has a top speed of 285
km/ h.
For fuel consumption, CO
2 emissions and efficiency class, please refer to pages 141/143.
The 3.8-litre engine.
The 911 Carrera S models are powered
by a 3.8-litre boxer engine with direct
fuel injection (DFI) and VarioCam Plus. It
produces 294 kW (400 hp) at 7,400 rpm
and the maximum torque of 440 Nm is
achieved at 5,600 rpm. With optional Porsche Doppelkupplung
(PDK), the 911 Carrera S accelerates
from 0 to 100 km/ h in 4.3 seconds and
achieves a top speed of 302
km/ h.

T h e 911
Carrera 4S also completes the
0 to 100
km/ h sprint in 4.3 seconds
and boasts a top speed of 297
km/ h.
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T orque (Nm)
Engine speed (rpm)
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T orque (Nm)
Engine speed (rpm)
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257 kW (350 hp)
390 Nm

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It is possible to have a lot of power yet not
be able to use it. Only by using your power
intelligently will you truly progress – and
with consummate ease.
Porsche Traction
Management (PTM) is
standard on all 911 Carrera all-wheel-drive
models. It is an active all-wheel- drive
system with an electronically variable
map-controlled multi-plate clutch,
automatic brake differential (ABD) and
anti-slip regulation (ASR). Drive power is distributed bet ween the
permanently driven rear axle and the
front axle by means of the electronically
variable multi
-plate clutch.
The status of the vehicle is continuously
monitored so that it is possible to respond
to different driving situations. Sensors
are used to collect a range of data, includ -
ing the rotational speed of all four wheels,
the lateral and longitudinal acceleration
of the car and the current steering angle. If, for example, the rear wheels begin
to lose traction under acceleration, a
greater proportion of the drive power
is automatically transmit ted to the front
axle by a more positive engagement of
the multi-
plate clutch. In addition, ASR
prevents wheel spin by adapting the
engine’s power output. During cornering,
the optimal level of drive power is
dis
tributed to the front wheels to ensure
excellent lateral stability. In conjunction with Porsche Stability
Management (PSM), PTM helps to ensure
the perfect distribution of drive power for
optimum traction in most road scenarios,
whether on long straights, through tight
corners, or on surfaces with different
friction coefficients.
Far better than a power struggle
is power interplay.

Porsche Traction Management (PTM).
T
emperament | Transmission

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T
emperament
| Chassis and body
“That can’t be done.”
If ever a sentence gave motivation to sports car designers, this is it.
Chassis and body.
A solid identit y tends to be described
with words like stability, directness or
substance. This might sound a lit tle
serious but, when it comes to the chassis
and body, we think that this is entirely
the right approach.
The best example is the engineered
design. Indeed, dynamic performance
and ride comfort fundamentally depend
on factors such as vehicle weight, body
rigidity, wheelbase, axle construction and
steering. With the 911, we challenged our
engineers to push the boundaries of what
is possible. Chassis control systems make a key
contribution to the 911 driving experience
and thus to the 911 identit y. These
include Porsche Stability Management
(PSM), Porsche Active Suspension
Management (PASM), which comes as
standard in the 911 Carrera S models,
Porsche Torque Vectoring (PT V) and
Porsche Torque Vectoring Plus (PT V Plus)

in conjunction with PDK. Porsche Dynamic
Chassis Control (PDCC) is additionally
available as an option for the 911 Carrera S
models.
Yet, there is still scope for improvement
as far as sport y performance is
concerned. The optional Sport Chrono
Package triggers an adrenaline rush at
the push of a but ton. Dynamic engine
mounts, until recently exclusively
reserved for 911
GT and Turbo models,
may not be capable of breaking the laws
of physics, but they do succeed in
exploiting them to their own advantage –
and yours.

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T
emperament
| Chassis and body
Aluminium
Deep -drawn steels
Multiphase steels
Super- high -strength micro -alloyed steels
Boron- alloyed steels
Front and rear axles.
The independent suspension at the front
features a light weight spring-strut axle
with longitudinal and transverse links and
cross members that have been refined
for stiffness. Each front wheel is precisely
located, ensuring excellent directional stability, superior handling and reduced
pitching under braking, and the wide
track optimises turn-
in.
The rear axle is equipped with a
motorsport- derived multi -link suspension
and chassis subframe. Refined axle
kinematics for improved longitudinal
damping reduce acceleration squat and increase comfort. Light weight spring
struts further enhance agilit y.
The high proportion of aluminium used in
the construction of the axles reduces the
weight of the vehicle and of the unsprung masses, helping to improve fuel economy,
comfort and agility.
Rear axle of the 911 Carrera S
Front axle of the 911 Carrera S
Engineered design.
The innovative bodyshell of the 911 fulfils
t wo structural design requirements: first,
excellent driving dynamics due to the
body’s extremely high rigidit y; second, a
low vehicle weight primarily as a result of
the intelligent lightweight construction.
To meet the second requirement, we
employed state -of -the- art techniques for
combining various materials in order
to utilise specific material properties
exactly where they are needed.

For the bodyshell, therefore, we used
very thin, but nevertheless extremely
rigid, sheets of steel. Aluminium and magnesium were used extensively in
areas such as the roof, underbody, front
end, doors, rear wings and engine com
-
partment and luggage compartment lids.
Magnesium, which is a particularly light -
weight material, was also selected for
the cockpit and centre console support
beam and, in the Cabriolet models,
the hood shell elements. Such material efficiency is key to
reducing the overall weight and, as a
result, fuel consumption of the vehicle.
For the driver, this intelligent blend of
materials reduces the weight of the
vehicle and offers a high level of comfort
thanks to excellent vibration-damping
characteristics and particularly high
composite rigidit y, a high degree of
dynamic torsional stiffness, and
especially sporty handling.
The long wheelbase improves comfort as
well as straight-line accuracy and driving
stabilit y at high speeds and in fast
corners.