2011 PORSCHE CAYMAN S transmission

89
Porsche Doppelkupplung (PDK,
p. 48) is available as an option.
The key elements of PDK are its
seven gears, t wo half gearboxes
and t wo clutches. It features both
manual and automatic modes.
Gears are changed using the gear
selector for PDK, the switches
on the sports steering wheel or
the new optional SportDesign
steering wheel with gearshift
paddles with race track control
logic. The gear change takes
place in a mat ter of milliseconds
without any interruption in the
flow of power. The advantage

over a fully manual transmission
is the considerably faster rate of
acceleration for the same rate of
fuel consumption. The advantage
over a fully automatic transmission
is the perceptible increase in
driving dynamics – with a similar
level of comfort, and a distinct
reduction in fuel consumption.
Two dif ferent characters. One
personalit y. Their drive for power
is impressive, their spirited nature
fascinating. Two sports coupés
that go beyond all conventions.
Two cars that draw their drivers
under their spell, forever.
The concept behind the Cayman
models is the ‘Le Mans Coupé’,

a sports coupé designed in 1953
specifically for this legendary
race and based on the 550
Spyder. Its mid- engine layout is
what made this car special. The
car’s low centre of gravit y gave it
tremendous agilit y and cornering
dynamics. From this one basic
idea came great success, and
with this success our experience
grew. The result? Two sophisticated
sportscars. The Cayman and the
Cayman S.
Their uncompromising perform -
ance is generated by t wo engine
developments, which stand out
above all for their light weight
construction, power output
and ef ficiency. The Cayman has
a 2.9 -litre flat-six engine with a
power output of 195 kW (265 hp).
Even more impressive are the per -
formance values of the Cayman S
with direct fuel injection (DFI, p. 34).
The fuel/air mixture is prepared

entirely in the combustion chamber
af ter having been metered and
injected directly, with millisecond
precision. This means even more
power and torque. To express
this in figures, its 3.4-litre flat-
six engine unleashes a might y
235 kW (320 hp). Depending on
the model, it has been possible
to reduce fuel consumption by
up to 15 % and CO
2 emissions by
up to 16 %.
In either model, this tremendous
power is delivered to the road
by a precision six-speed manual
gearbox.
The primary target group:
your central nervous system.
The Cayman models.
Cayman | The concept
Cayman models: fuel consumption in l/100 km (mpg) urban 14.1 (20.0) –13.6 (20.8) ·
extra urban 7.1 (39.8) – 6.5 (43.5) · combined 9.5 (29.7) –9.1 (31.0); CO
2 emissions 223–214 g / km

4041
Input dataRegulation/control of
Electronic engine management
ME 7.8/Cayman – SDI 3.1/ Cayman S
Engine load
Lambda sensor signals
Engine speed (from crankshaft)
Inlet camshaft phase angle
Knock sensor signals
Vehicle speed
Air-conditioning settings
Accelerator pedal
Temperatures
– Coolant
– Intake air
– Air in engine compartment
– Engine oil
– Ambient air
Pressures
– Engine oil
– Fuel
– Ambient air
Ignition
Manifold injection (Cayman)/
direct fuel injection (Cayman S)
Heating of Lambda sensors
Fuel pump (Cayman)/
fuel pumps controlled on demand
(Cayman S)
Fuel-tank venting
CAN interface with driving dynamics control, transmission control, immobiliser, instrument cluster, climate control,
SPORT button, SPORT PLUS button, sports exhaust system button, diagnostics, etc.
Valve lift switchover
(VarioCam Plus)
Secondary-air injection (Cayman)
Starter
Throttle-valve angle
Idling via throttle valve
and ignition
Fuel pressure (Cayman S)
Throttle valve
Camshaft position
Engine fan
Continuously variable oil pump
Cayman
same conditions, they are
monitored individually by the
knock control. The ignition point
is shifted individually, as and
when necessary, to protect the
cylinders and pistons at high
engine speeds. The on -board
diagnostics, which are compliant
with European standards, ensure
timely detection of any faults
and defects that may occur in the
exhaust and fuel systems and
notif y the driver immediately. This
also prevents increased pollutant
emissions and unnecessary fuel
consumption.Engine cooling system.
Our cross-flow cooling system,
as used in motorsport, minimises
the engine’s tendency to knock
and ensures comparatively low
emissions, fuel consumption and
noise levels.
Engine management system
with E-Gas.
The electronic engine management
system ensures optimum engine
performance at all times. It regu-
lates all engine-related functions
and assemblies (see diagram).
The results: optimum performance
and torque with comparatively low
fuel consumption and emissions.
Another important function of the
system is cylinder-specific knock
control. Since the six cylinders
never all work under exactly the
Cayman | Drive

4849
If you want to get straight to the point,
you don’t take any detours.
Transmission.
Cayman S
This double clutch provides an
alternating, non-positive connection
bet ween the t wo half gearboxes
and the engine by means of t wo
separate input shafts (input shaft
1 is nested inside the hollowed-out
input shaft 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 shif t no
longer takes place. Instead, one
clutch simply opens and the other
closes at the same time. Gear
changes can therefore take place
within milliseconds.
Clutch 1 controls the first half
gearbox, which contains the
odd gears (1, 3, 5, 7) and reverse.
Clutch 2 controls the second,
which contains the even gears
(2, 4, 6).
Porsche Doppelkupplung (PDK).
The optional Porsche Doppel
-
kupplung (PDK), with both manual
gearshif t and an automatic mode,
enables smooth gear changes
with no interruption in the flow of
power. This results in significantly
faster acceleration and lower
fuel consumption, without having
to sacrifice the ease of automatic
transmission. In total, PDK has seven gears
at its disposal. Gears 1 to 6 have
a sports ratio and top speed is
reached in 6th gear. The 7th gear
has a long ratio and helps to
reduce fuel consumption even
f u rt h e r.
PDK is essentially t wo half gear-
boxes in one and thus requires
t wo clutches – designed as a
double wet clutch transmission.
Cayman | Drive

50
46
2
1
R
7 3
5
51
4
6
2
R1
3
7
5
Multi - plate clutch 1
Multi - plate clutch 2
Semi -gearbox 2
(2nd, 4th, 6th gear)
Semi -gearbox 1
(1st, 3rd, 5th, 7th, R gear)
Differential
Engine
Rear wheel
Rear wheel
Porsche Doppelkupplung (PDK) PDK function diagram
is established, and power is
transmit ted to the wheels.
The gear which is engaged is
displayed on the instrument
cluster. Depending on the
gearshif t programme, the gear
change is optimised for comfort
or for sport y handling and takes
place in a mat ter of milliseconds.
The advantages over a fully
manual transmission are very Package, PDK is enhanced by
the ‘Launch Control’ and ‘motor
-
sport- derived
gearshift strategy’
functions (p. 62).
In essence, PDK combines
sportiness with ef ficiency and
comfort. What does all this
mean for you? Exactly what you
would expect: uninterrupted
driving pleasure.
Porsche Doppelkupplung (PDK)
in detail.
The crankshaf t transmits engine
torque to the dual-mass fly wheel
which is then channelled through
the clutch housing and onto the
multi-plate clutches, or to be more
precise, the outer disc carrier.
Under oil pressure, clutch 1 closes
and forms a frictional connection rapid gearshif ts with no
interruption in the flow of power,
which result in a considerably
faster rate of acceleration for the
same rate of fuel consumption.
The advantage over a fully
automatic transmission is the

perceptible increase in driving
dynamics – with a similar level of
comfort, and a distinct reduction
in fuel consumption.
with input shaft 1. The torque is
now transmit ted through the
dif ferential to the rear axle.
At this stage, PDK has already
preselected the next gear.
Engine torque is already acting
on the other outer disc carrier
and, in response to a gear change
signal, the overlap shift is

initiated, i.e. as clutch 1 opens,
clutch 2 closes. The non-positive
connection with input shaf t 2 The compact dimensions of the
gearbox reduce rotational masses
which means that the engine
response is more direct and the
system is more light weight.
This, along with the long-ratio 7th
gear, helps to achieve relatively
low fuel consumption and

emission figures comparable
with those of a manual gearbox.
With the optional Sport Chrono
Cayman | Drive

5253
Spor tDesign steering wheel with gearshif t paddles
Sports steering wheel with gearshif t switches Gear selector for PDKGear lever in carbon
A display on the lef t and right
steering wheel spokes tells you
whether the SPORT, SPORT PLUS
and Launch Control functions of
the optional Sport Chrono Package
are activated. Another feature
reminiscent of the world of motor-
spor t is the top centre marking
on the steering wheel rim.
Gear selector for Porsche
Doppelkupplung (PDK).
The gear selector for PDK
impresses not only with its unique
design, but above all with its
superior functionality enabling you
to change gear manually: press wheels for approximately t wo
seconds once the footbrake is
released. The vehicle is therefore
temporarily prevented from rolling
backwards. Brake pressure is
reduced if, within t wo seconds,
sufficient revs have been gener
-
ated by the driver depressing
the accelerator pedal (or, in the
case of manual transmission, the
accelerator pedal is depressed
and the clutch is engaged).
Sports steering wheel.
In conjunction with the optional
Porsche Doppelkupplung (PDK),
the standard sports steering wheel
has t wo ergonomic switches.
One press with the thumb and PDK
shif ts up. One pull with the index
finger and PDK shif ts down. When
combined with one of the optional
Sport Chrono Packages (p. 62),
there is an additional display
above the airbag module. It tells
you whether the SPORT, SPORT
PLUS and Launch Control func -
tions are activated. forwards to shift up, pull back
-
wards to shift down.
Even if the gear selector is set
to automatic mode, you can still
change gear manually using the
switches or gearshif t paddles on
the steering wheel.
Six-speed manual gearbox.
Fit ted as standard in each of the
Cayman models is a six-speed
manual gearbox. The shift throw is
short and precise, the tuning is
sport y – as befits the character of
the Cayman models. The dual-mass
fly wheel minimises engine noise
SportDesign steering wheel.
Visually, this steering wheel is
distinguished by its high-qualit y t win-
spoke design and silver-coloured
galvanised spoke cover. The airbag
module is finished in the same
colour as the steering wheel rim.

This optional steering wheel allows
you to make motorsport-st yle gear
changes. In conjunction with the
optional PDK, the SportDesign
steering wheel features t wo alloy
shift paddles ergonomically located
behind the steering wheel spokes.
Pull the right-hand paddle and the
PDK shifts up. Pull the left-hand
paddle and the PDK shifts down.
and the control cable mechanism
prevents vibrations from being
transmit ted to the gear lever.
Hill-start assist.
Hill-start assist comes as standard
for manual and Porsche Doppel
-
kupplung (PDK) transmissions.
It assists the driver in making a
comfortable, smooth and roll-free
start on an incline.
The system automatically detects
that the vehicle has been braked
to a halt on an incline. Provided
a gear is engaged, the brake
pressure is maintained at all four
Cayman | Drive

116117
OptionI no.Page
•
17-inch Boxster III wheels
• –394
5 9 , 116
•
18-inch Cayman S II wheels
• •409 5 9 , 116
•
18-inch Boxster S II wheels
••408 5 9 , 116
•
19-inch Carrera S II wheels
••419 5 9 , 116
•
19-inch Carrera Classic wheels
••405 5 9 , 117
•
19-inch SportDesign wheels
••4 07 5 9 , 117
•
19-inch Carrera Sport wheels
1)••XRR 5 9 , 117
• 19-inch 911 Turbo wheels
••404 5 9 , 117
• 19-inch 911 Turbo II wheels
••421 5 9 , 117
•
Wheel centres with full-colour Porsche Crest
••446 117
•
Tyre Pressure Monitoring (TPM)
••482 59
Option I no.Page
• Porsche Doppelkupplung (PDK, 7-speed)
••250 48
• Porsche Ceramic Composite Brake (PCCB)
–•450 70
•
Porsche Active Suspension Management (PASM)
with ride height lowered by 10 mm
••475 60
•
Mechanically locking rear differential
(only in conjunction with 18-inch or 19-inch wheels)
••220 60
• Sport Chrono Package
••639 62
•
Sport Chrono Package Plus (only in conjunction with PCM)
••640 63
• Sports exhaust system
••XLF 44
Cayman
Cayman SWheels.Cayman
Cayman SEngine, transmission and chassis.
1) Includes wheel centres with full-colour Porsche Crest. 19 - inch SportDesign wheel
19 - inch Carrera Sport wheel
19 - inch Carrera Classic wheel
19 - inch 911 Turbo wheel 19 - inch 911 Turbo II wheel
19 - inch Carrera S II wheel
18 - inch Cayman S II wheel 17- inch Boxster III wheel
18 - inch Boxster S II wheel
Cayman | Personalisation
The vehicles illustrated in the chapter on personalisation may include additional options not featured in this catalogue.
For information on these options, please consult your Porsche Centre.
For more information on the options featured in this catalogue, please refer to the separate price list.
– not available
extra - cost option • standard equipment A available at no extra cost

134135
Technical data
CaymanCayman S
Weights
Manual/ PDK Manual/ PDK
Unladen weight (DIN) 1, 3 3 0 k g / 1, 3 6 0 k g 1, 3 5 0 k g / 1, 375 k g
Unladen weight (EC)
1)1,4 0 5 k g / 1,4 3 5 k g 1,425 k g / 1,4 5 0 k g
Permissible gross weight 1,6 3 5 k g / 1,670 k g 1,6 4 5 k g / 1,675 k g
PerformanceManual/PDK (SPORT PLUS)2)Manual/PDK (SPORT PLUS)2)
Top speed km/ h (mph) 2 6 5 (16 5) / 2 6 3 (16 3) 27 7 ( 17 2 ) / 27 5 ( 17 1)
0 –100 km/ h (0 – 62 mph) 5.8 secs/5.7 secs (5.5 secs)
2)5.2 secs/5.1 secs (4.9 secs)2)
0 –160 km/ h (0 –99 mph) 13.4 secs/13.2 secs (12.9 secs)2)11.4 secs/11.2 secs (10.9 secs)2)
Flexibilit y
80 –120 km/ h (50 –75 mph) in 5th gear
In -gear acceleration
80 –120 km/ h (50 –75 mph) 7.6 secs/–

–/ 3.7 s e c s 6.5 secs/–

–/3.1 secs
Fuel consumption/emissions3)Manual/ PDK Manual/ PDK
Urban in l/100 km (mpg) 13.8 (20.5)/13.6 (20.8) 13.6 (20.8)/14.1 (20.0)
Extra urban in l/100 km (mpg) 6.9 (40.9)/6.5 (43.5) 7.1 (39.8)/6.6 (42.8)
Combined in l/100 km (mpg) 9.4 (30.1)/9.1 (31.0) 9.5 (29.7)/ 9.4 (30.1)
CO
2 emissions in g / km 221/214223/221
Dimensions/aerodynamics
Length 4,347 mm4,347 mm
Width (including exterior mirrors) 1,801 mm (1,952 mm)1,801 mm (1,952 mm)
Height 1,304 mm1,306 mm
Wheelbase 2,415 mm2,415 mm
Luggage compartment volume ( VDA)
front/rear 150 litres/260 litres
150 litres/260 litres
Tank capacit y (refill volume) 64 litres64 litres
Drag coef ficient 0.29/0.290.29/0.30
Technical data
CaymanCayman S
Engine
Ty p e Horizontally opposed cylinder Horizontally opposed cylinder
Installation Mid - mounted Mid - mounted
Cylinders 6 6
Displacement 2,893 cm
33,436 cm3
Max. power (DIN)
at rpm 195 kW (265
hp)
7, 2 0 0 r p m 235 kW (320
hp)
7, 2 0 0 r p m
Max. torque
at rpm 300 Nm
4,400–6,000 rpm 370 Nm
4,75 0 r p m
Compression ratio 11.5 : 1 12.5 : 1
Transmission
Layout Rear-wheel drive Rear-wheel drive
Manual gearbox 6-speed 6-speed
PDK (optional) 7-speed 7-speed
Chassis
Front axle Light weight spring strut suspension Lightweight spring strut suspension
Rear axle Light weight spring strut suspension Lightweight spring strut suspension
Steering Power-assisted (hydraulic), with
variable steering ratio Power-assisted (hydraulic), with
variable steering ratio
Turning circle 11. 1 m 11. 1 m
Brakes Four-piston aluminium monobloc
fixed calipers front and rear,
internally vented and cross-drilled discs Four-piston aluminium monobloc

fixed calipers front and rear,
internally vented and cross-drilled discs
Vehicle stabilit y system PSM (with ABS 8.0) PSM (with ABS 8.0)
Wheels
Front:
7 J x 17
Rear: 8.5 J x 17 Front:
8 J x 18
Rear: 9 J x 18
Tyres
Front:
205/55 ZR 17
Rear: 235/50 ZR 17 Front:
235/40 ZR 18
Rear: 265/40 ZR 18
3) Data determined in the NEDC (New European Driving Cycle) in accordance with the Euro 5 (715/2007/EC and 692/2008/EC) measurement
method. The figures do not refer to an individual vehicle nor do they constitute part of the offer. They are intended solely as a means of comparing
different types of vehicle. You can obtain further information about individual vehicles from your Porsche Centre. Fuel consumption calculated for
vehicles with standard specification only. Optional equipment may affect fuel consumption and performance.1) Weight is calculated in accordance with the relevant EC Directives and is valid for vehicles with standard specification only.
Optional equipment increases this figure. The figure given includes 68 kg for the driver and 7 kg for luggage.
2) In conjunction with the optional Sport Chrono Package or Sport Chrono Package Plus and with the SPORT PLUS button selected.