· 31 · · 30 ·
At the heart of each car:
something to set the pulse racing.
Powering the Cayman and Cayman S.
Six-cylinder boxer engine.
Both Cayman models have a
mid-mounted six-cylinder boxer
engine featuring VarioCam Plus
technology. Ideally positioned
directly behind the driver, the
‘flat-six’ engine provides an
The new Cayman and the Cayman S |Drive
0 20
40 60 80 100
120 140 160 180
200
220
1500
7500 2000 2500 3000 3500 4000 4500 5000 5500 6000 6500 7000 1000 240
240 280 290
300
310
320 330 340
350
250 260
270
217 kW (295 bhp)
340 Nm
360
Power (kW)Torque (Nm)
Engine speed (rpm)
Cayman S: 340 Nm between 4,400 and 6,000 rpm, 217 kW (295 bhp) at 6,250 rpm
150 230 250
270
290
310 330 350
3700 20
40 60 80 100
120 140 160 180
200
220
1500
7500 2000 2500 3000 3500 4000 4500 5000 5500 6000 6500 7000
170 190
210
1000
180 kW (245 bhp)
273 Nm 240
390
Power (kW)Torque (Nm)
Engine speed (rpm)
Cayman: 273 Nm between 4,600 and 6,000 rpm, 180 kW (245 bhp) at 6,500 rpm
Cayman S: 3.4-litre six-cylinder boxer engine
perfectly augmented by the agility
its position in the car provides.
The new Cayman has a 2.7-litre
engine developing 180 kW
(245 bhp). The 3.4-litre unit in
the Cayman S produces 217 kW
(295 bhp).On both cars, maximum torque
output is available for use over
much of the engine speed range.
The new Cayman has a maximum
rating of 273 Nm between 4,600 and 6,000 rpm. On the
Cayman S, the maximum output
of 340 Nm is available between
4,400 and 6,000 rpm. This
broad band of torque is, in part,a product of the resonance
induction manifold with twin-flow
intake pipe as well as VarioCam
Plus technology (see page 39).
exceptionally low centre of
gravity. Important characteristics
include exhilarating power
delivery, a free-revving throttle,
optimum cylinder charging,
smooth engine running and
superlative all-round performance.
The power of each engine is
· 39 · · 38 ·VarioCam Plus The new Cayman and the Cayman S |
Drive
higher torque at low rpm, a flatter
torque curve, and greater top-end
power. It also brings an additional
dimension to the unique engine
sound.VarioCam Plus.
VarioCam Plus combines variable
valve timing with two-stage lift
on the inlet side. The resulting
benefits include greater power and
torque at all engine speeds, as
well as smoother running, better
fuel economy and fewer exhaust
emissions.
Essentially, the system creates
two engines out of one, switching
seamlessly between them as
driver inputs change. All operations
are centrally controlled by
the Motronic ME7.8 engine
management system. The result:
rapid acceleration and balanced
running characteristics.
The two-stage valve lift mechanism
on the inlet side incorporates
a series of electro-hydraulically
switchable tappets. Each of
the 12 tappets consists of two
concentric lifters which can be
locked together by means of a
pin when required by the engine
management system. When the
tappets are locked, the outermost
ring – which is driven by two large-
profile cams – is in direct contact
Two-stage resonance intake
manifold.
The intake manifold has a twin-flow
pipe with two-stage valve which
opens and closes at predefined
engine speeds. An additional
‘resonance’ pipe connecting the
twin plenum chambers is used
to alter the geometry within the
manifold. The resulting vibration in
the incoming air helps to maximise
cylinder charging and create the
optimum air/fuel mix. The results:
with the valve. When the pin is
removed, the innermost lifter –
operated by a smaller cam lobe –
has sole influence over the
amount of valve lift. The timing of
each valve is steplessly controlled
by means of an electro-hydraulic
rotary vane adjuster at the head
of each inlet camshaft.
To improve responsiveness when
starting from cold, VarioCam Plus
will raise the amount of lift and
retard the timing of the valves.
At medium revs and minimal load,
the valve lift is lowered and timing
advanced to help minimise fuel
consumption and emissions.
To achieve maximum power and
torque, the lift is raised and the
timing advanced.
Cayman
