2010 PORSCHE 911 GTS engine

‘
As wide as a Turbo and as sharp as a GT – the 911 Carrera GTS
has all the racing genes of Porsche and is 100 percent 911.’
The 911 Carrera is renowned for
being an unadulterated sports­
car. The engine is positioned
low down in the rear. The car’s
silhouette is distinctive, the
design is unmistakable.
Since 1963, the 911 concept
has been the source of much
inspiration. Some ideas made
it only as far as the drawing
board, before being shelved.
Since 1963, the sportscar world has talked about three numbers: 911.
Today, we’re talking about three letters: GTS.
Now, the time has come to
reaffirm the definition of the
911. In other words, to speak in
plain language with a strong
argument and three let ters that
cannot be misunderstood: GTS.
They combine t wo strengths:
the emphatic sportiness of a
911 Carrera S model and
per formance that you would
expect to find only on the
racetrack, with the abilit y for day
­to ­day driving. The
result is
tangible, visible, and immediate ­
ly accessible.
The new 911 Carrera GTS

models. Whether in Coupé or
Cabriolet form, the fact
remains the same. They are
the sportiest 911 Carrera
models that we’ve ever built.
Walter Röhrl, two ­times world rally champion
7
„
The new 911 Carrera GTS

Engineering.
The new 911 Carrera GTS.
More power. Maximum torque is
reached earlier. An even faster
throt tle response and even
better acceleration. An even
sportier driving experience.
These are the most compelling
at tributes compared with the
911 Carrera S models.
The figures say it all. The upra­
ted 3.8­litre flat ­six engine with
direct fuel injection (DFI) now
delivers 300 kW (408 hp), 23 hp
more than the 911 Carrera S.
The Coupé model completes the
0 to 100 km/ h (62 mph) sprint
in 4.6 seconds, the Cabriolet in
4.8 seconds.
Yet, there has been no increase
in fuel consumption or emissions.

This is not a contradiction, but a
combination of dynamics and
efficiency, of sportiness and
ever yday practicalit y. In short, it
is our understanding of the
sportscar concept. We call it
Porsche Intelligent Per formance.
Increased per formance, with
ideas that drive us for ward –
a principle that also reflects
our approach to the chassis
and to safet y. Both models are
equipped as standard with
Porsche Active Suspension
Management (PASM) and

Porsche Stabilit y Management
(PSM). The optional Sport Chrono
Package Plus is the essence of
motorsport, of fering an even
more dynamic tuning of the
chassis and engine setup. In
conjunction with the optional
Porsche Doppelkupplung (PDK),
the Sport Chrono Package Plus
delivers a further improvement
in acceleration: 4.2 seconds

for the Coupé and 4.4 seconds
for the Cabriolet. Gear changes
take place in milliseconds,
with no interruption in the flow
of power. Together, this spells
911 Carrera GTS.
Design.
Three words are enough to
make a clear statement: athletic,

muscular, powerful. The look of
the new 911 Carrera GTS models
leaves no room for doubt. They
are models of clarit y.
Let ’s get straight to the detail,
beginning with the dynamically
accentuated cooling air intakes
in the front apron and the
additional spoiler lip with a
black painted finish. These are
distinctly sport y characteristics,
with components that have
been optimised in the Porsche
wind tunnel to improve aero ­
dynamic ef ficiency. On the sides
of the vehicle, black sideskirt
trims are a bold indication of
the performance in store. The rear end is just as expres
­
sive. Compared with the
911 Carrera S, the body is
44 mm wider at the rear axle
and the rear track has been
widened by 32 mm for greater
roll stabilit y and improved
turn ­in. The 911 Carrera GTS
models are fit ted with 19 ­inch
RS Spyder wheels featuring
a central locking device. Until
now, this racing wheel design
was exclusive to the 911 Turbo.
The black painted finish on
the centre spokes is also an
unmistakable reference to
motorsport, and a clear signal
of the driver’s racing mentalit y.
8

Engine.
The message is clear and
un mistakable: force, power
and dynamics. With direct fuel
injection (DFI) and VarioCam
Plus, the uprated 3.8­litre six ­
cylinder rear engine of the
new 911 Carrera GTS models
generates 300 kW (408 hp) at
7,300 rpm.
Words aren’t that important
when something speaks to you from the soul.
Maximum torque is 420 Nm
and both models achieve a top
speed of 190 mph (306 km/ h).
The Coupé accelerates from
0 to 62 mph (100 km/ h) in
4.6 seconds, the Cabriolet in
4.8. The optional Porsche
Doppelkupplung (PDK) further
improves acceleration, reducing
these times to 4.4 and 4.6 sec ­
onds respectively. The throttle response is even
more direct and acceleration is
even sportier. The engine power
is 23 hp higher than that of the
911 Carrera S. This was made possible by the redesigned
intake manifold, the modified
cylinder heads and the opti
­
mised engine electronics.
‘ It has a truly insatiable urge for acceleration, but with 408 hp
at the rear axle and such a tremendous amount of grip, that’s
no surprise.’
August Achleitner, Director Product Line Carrera
13
„
Drive

Intake manifold.
Take a deep breath. The
911 Carrera GTS models are
fit ted with a variable resonance
intake system featuring six
switchable, vacuum­controlled
valves. In the direct injection system,
the EMS SDI 3.1 engine manage
­
ment system adjusts the
injec ­
tion timing individually for
each
cylinder and the injection quanti ­
t y for each cylinder bank. This
optimises both the combustion
curve and fuel consumption.
A hot ­film air mass meter takes
care of the airflow, so that the
combustion chambers contain
exactly the right mixture at all
times.
Dual injection is implemented
at engine speeds of up to
3,200 rpm and triple injection
up to 2,500 rpm. The required
quantit y of fuel is distributed
to t wo or three successive
injection processes per cycle.
These valves enable the system
to switch bet ween power
­ and
torque ­optimised geometries
for all six air intake tracts to
produce even higher torque in
the mid ­rev range. The improved
charging of the combustion
chamber is made even more
This strateg y achieves faster
heating of the catalytic con­
verters af ter a cold start and
produces greater torque in the
upper load range.
DFI improves the internal cool
­
ing of the combustion chamber
by forming the mixture directly
in the cylinder. This has made it
possible to increase compres ­
sion (12.5:1), resulting in more
engine power and even greater
e f f ici e n cy.
Injection is regulated by the
electronic engine management
system. The exhaust gas
cleaning system ensures that
emissions remain below the
strict limits of the Euro 5 emis ­
sion standard, thus helping to
protect the environment.
ef ficient by a flow
­optimised
intake duct. The cooling system
has been adapted to the
increased engine output.
VarioCam Plus.
VarioCam Plus is a variable
valve timing system on the
inlet side which also features
t wo ­stage valve lif t. This allows
even smoother running with
comparatively efficient fuel
consumption and low emissions
– yet with greater power and
torque.
This t wo­in ­one engine concept
seamlessly adapts in response
to driver input. The result
is instant acceleration and
extremely smooth running
.
Direct fuel injection (DFI).
Ef ficiency is about get ting more
from less, and direct fuel injec ­
tion (DFI) is fit ted as standard.
With millisecond precision,
DFI injects fuel at up to 120 bar
directly into the combustion
chamber by means of electro ­
magnetically actuated injection
valves. The timing of each valve is step
­
lessly and electrohydraulically
controlled by means of a rotar y
vane adjuster.
For optimum responsiveness
during the warm ­up phase,
VarioCam Plus will select the
higher valve lif t set ting and
The spray and cone angles
have been optimised for torque,
power output, fuel consumption
and emissions, thus ensuring
homogeneous distribution of
the air/fuel mixture and, conse ­
quently, ef ficient combustion. retard valve timing. At medium
revs and low engine loads, the
lower valve lif t set ting is select
­
ed and timing advanced in order
to reduce fuel consumption
and emissions. The higher lif t
set ting produces high torque
and even more power output.
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Integrated dry-sump
lubrication.
Integrated dry ­sump lubrication
ensures a reliable supply of oil
even when a sport y driving st yle
is adopted. It also has additional
cooling functions.
The oil tank is located in the
engine, thereby eliminating the
need for an external oil tank.
Four oil pumps remove the oil from the cylinder heads directly
into the oil sump. A fif th pump
in the oil sump directly supplies
the lubricating points in the
engine.
To prevent foaming, the oil is
channelled through cylinders
known as swirlpots. In this
way, optimum lubrication is
guaranteed at
all times. To reduce drive losses and
increase efficiency, an electronic
on
­demand oil pump is used.
This means that the oil pump
is operated at high power when
there is high demand and at
low power when there is low
demand.
The result is an optimised oil
supply appropriate to require ­
ments, lower fuel consumption
and reduced emissions.
Single ­jet piston spray nozzles
cool the piston crowns with oil
from the main lubrication circuit
– another detailed solution that
helps to reduce the thermal
load on the engine. For the engine, these detailed
solutions mean a consistent
supply of oil regardless of gravi
­
tational loads, even in the most
demanding track conditions.
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Ignition system.
The ignition system is a static
high­voltage system. Each

individual spark plug has a

separate ignition coil, ensuring
excellent combustion every
time.
Engine cooling system.
DFI and VarioCam Plus enable a
tremendous amount of power to
be produced with comparatively
low emissions, fuel consumption
and noise. The same applies to
our ef ficient cross ­flow cooling
system, as used in motorsport.
Sports exhaust system.
If you want to be heard, it’s bet ­
ter to speak forcefully rather
than loudly.
The sports exhaust system
follows this principle. Fit ted as
standard in the 911 Carrera GTS
models, it makes the t ypical
Porsche sound even more pow ­
erful, even more resonant, and
even more sport y.
The sound varies with driving
behaviour, ranging from a robust output during normal driving to
a distinctly more aggressive
tone during per formance use.
The sports exhaust system is
activated using a but ton on the
centre console.
The look, like the acoustics, has
a clear accent. The tailpipes are
painted black on the outside,
and are polished on the inside.
They are also nanocoated,
which makes them particularly
easy to clean.
90-litre fuel tank.
To increase the distance that
your vehicle can cover on a
tank of fuel, an optional fuel
tank with a refill volume of
90 litres is available in place

of the 67 ­litre tank fit ted as
standard.
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Porsche Doppelkupplung
(PDK).

PDK is available as an option for
the new 911 Carrera GTS mod­
els. Gear changes take place in
milliseconds, for vastly improved
acceleration and lower fuel con ­
sumption.
In total, PDK has seven gears at
its disposal. Gears 1 to 6 have a
sports ratio, with the top speed
being reached in 6th gear. The
7th gear has a long ratio and
Six-speed manual gearbox.

Accurate and involving: the six ­
speed manual gearbox is the
link to each and every gear.
The cable ­operated gearshif t
unit is designed for optimum
progression through the gears
and the gear lever is insulated
from the engine and gearbox.
With minimal resistance, the
gear lever throw is short and
precise, enabling a rapid gear ­
shif t action and positive
response. helps to reduce fuel consump
­
tion even further. PDK is essen ­
tially t wo half gearboxes in one
and thus requires t wo clutches –
designed here as a double wet
clutch transmission.
This double clutch provides an
alternating, non positive connec­
tion bet ween the t wo half gear ­
boxes and the engine by means
of t wo separate input shaf ts (input shaf t 1 is nested inside
the hollowed
­out input shaf t 2).
The flow of power from the
engine is only ever transmit ted
through one half gearbox and
one clutch at a time, while the
next gear is preselected in the
second half ­gearbox. During
a gear change, therefore, a
conventional shift no longer
takes place. Instead, one clutch
simply opens and the other
closes at the same time. PDK and the manual gearbox
deliver power directly to the
road. With the optional Sport
Chrono Package Plus (p. 26),
you can make it even more
direct, and even sportier. With a
rush of adrenaline and euphoria,
you are straight into the action.
Precise actions hit the mark sooner.
The same is true of our transmission concepts.
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Key features include a digital
and analogue stopwatch, the
SPORT button, a performance
display, a personal memory
function in the Porsche Commu­
nication Management (PCM),
and – in combination with
Porsche Doppelkupplung (PDK) –
the SPORT PLUS but ton, and an For maximum dexterit y, PSM
can be set to standby while
the car is still in ‘Sport ’ mode.
For safety, it is set to intervene
automatically only when ABS
assistance is required on both

of the front wheels.
In combination with PDK, the
Sport Chrono Package Plus has
two additional functions that
are activated by pressing the
SPORT PLUS button, for a
sport y drive that borders on
a motorsport experience.
The first function is ‘Launch
Control’ which, for example
when performing laps, helps you
achieve optimum acceleration
from a standing start – a racing
start in other words.
Sport Chrono Package Plus.
Sport Chrono Package Plus is
available as an option. It of fers
even sportier tuning of the
engine and chassis, and delivers
even greater driving pleasure as
a result.
A harder rev ­limiter is also
applied in the automatic mode
of the optional PDK, while the
gearshif t points are delayed
until the upper rev range. The
shif t times are shorter, the gear
changes sportier. Even at low
rates of deceleration and at high
revs, the system initiates a swift ­
er, brake ­induced downshift.
In manual mode, gear changes
are faster and more dynamic.
In ‘Sport ’ mode, the trigger
threshold for PSM is raised for
increased longitudinal and later ­
al dynamics. Agilit y is enhanced
when braking for corners with
PSM enabling greater manoeu ­
vrability under braking and exit
acceleration, especially at low
speeds. The result? Increased
driving pleasure.
additional display in the steering
wheel which informs the driver if
the SPORT but tons and Launch
Control have been activated.
When the SPORT PLUS but ton
on the centre console is select
­
ed, the EMS SDI 3.1 engine
management system adapts for The function works like this:
press the SPORT PLUS but ton
when the transmission is in
‘D’ or ‘M’. Then, with your lef t
foot, press the brake pedal
and accelerate fully with the
right foot. The car recognises
‘Launch’ mode from the accel­
erator kickdown action and
adjusts the engine speed to the
optimum level, which is around
6,500 rpm. At the same time,
engine torque is increased
and the clutch is applied lightly.
‘Launch Control’ now appears
in the PDK steering wheel dis
­
play. Now release the brake as
quickly as you can and get ready
to experience all the accelera ­
tion power the 911 Carrera GTS
has to of fer.
sportier per formance driving. In
response to pedal input, a more
dynamic throt tle map opens the
throt tle valve wider than would
be the case in Normal mode.
The throttle response is signifi
­
cantly more immediate and a
harder rev ­limiter is also applied
in the higher gears. The second function is the
‘motorsport
­derived gearshif t
strategy’. Using this, Porsche
Doppelkupplung (PDK) is geared
up for extremely short shif t
times and optimum shift points
for the maximum acceleration
available to the 911 Carrera GTS.
This combination of uncompro ­
mising and involving perform ­
ance is ideal for the racetrack.
Another key component of the
Sport Chrono Package Plus is
the stopwatch mounted on the
dashboard. Porsche Communi ­
cation Management (PCM) has
a special performance display
to view, store and evaluate lap
times or other driving times.
It shows the total driving time,
lap distance, lap number and
lap times recorded so far. You
can view the current fastest lap
Also influenced by ‘Sport’

mode is the standard equipped
Porsche Active Suspension
Management (PASM). The
dampers become firmer,

enabling faster turn­in as well as
bet ter contact with the road.
and the remaining range until
empt y. Travelled distances can
be recorded and benchmark
times defined.
The personal memor y function
of the Sport Chrono Package
Plus can also be used to store
personalised set tings for a
range of systems, including the
orientation lighting or air condi ­
tioning.
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