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2008 Cayman/Cayman S To many purists and students of sports car history, the Cayman and Cayman S are close descendants of the legendary Porsche 904 and its precursor, the Porsche 550 Coupe. These latest interpretations of the agile, quick and sure-footed two-seat coupe bristle with the modern performance technology that continues to define Porsche. The Cayman and Cayman S are fast, responding to inputs with razor-like sharpness. They are also both driver and environmentally friendly. Despite their exhilarating performance potentials, neither Cayman model carries the stigma of a gas-guzzler penalty and both exceed the emissions requirements mandated of a Low Emissions Vehicle. Highlights What's New for 2008 As the newest members of the Porsche lineup, one having been introduced to the world just last year and the other the year before, both Cayman and Cayman S go into the 2008 model year with but a few minor refinements. Optional leather sports folding bucket seats Essentially a race seat with a folding backrest, the new sports bucket seats boast carbon fiberreinforced construction for a weight savings of 15 to 20 pounds (7 to 9 kg) over standard seats, depending on model. Like all Porsche driver and front-passenger seats, the sports bucket seats have integrated thorax airbags and are compliant with all U.S. safety standards. New colors As popular tastes continue to change, Porsche designers continue to refine the available palette of colors. For 2008, the new exterior color, Macadamia Metallic is available. Other 2008 exterior color changes have Atlas Grey Metallic replacing Lapis Blue Metallic as a special color, Malachite Green Metallic replacing Lagoon Green Metallic, and Ruby Red Metallic replacing Carmona Red Metallic. Inside the cockpit, Palm Green is gone from the list of available colors and Carrera Red as a new natural leather option. Finally, the panel air vents on both Cayman models are now Matte Black soft-touch, replacing Volcano Grey.

Service intervals For 2008 models, the recommended oil change interval is now 12,000 miles (20,000 km), or one year. The spark plugs should be replaced every 36,000 miles (60,000 km), or four years. Cayman: Supremely balanced mid-engine coupe Porsche's engineers drew upon their decades of motorsports-gained wisdom and used the inherently well-balanced and agile mid-engine chassis of the Boxster when they began development of the Cayman. They then proceeded to create a steel-roofed sports car with a structure that's 100 percent more resistant to flex than the already superbly stiff Boxster roadster. The result is a two-seat coupe with a unique look and race-worthy dynamics that rival the car's iconic big brother, the 911 Carrera. The Cayman is powered by a 245-horsepower horizontally opposed six-cylinder engine. With Motronic® engine controls and Porsche VarioCam Plus to monitor and adjust intake-valve timing and lift, the 2.7-liter engine develops 201 lb.-ft. of torque, and, when mated to the standardequipment five-speed manual gearbox, pushes the Cayman from zero to 60 mph in 5.8 seconds, and to its track-proven top speed of 160 mph (258 kph). Equally impressive is the car's 20 city/29 highway mpg fuel economy rating and its certification as an Ultra Low Emissions Vehicle (ULEV). Optionally, the Cayman can also be equipped with either the six-speed manual gearbox of the Cayman S or the Porsche driver-shiftable Tiptronic S automatic transmission. Cayman S: Even greater performance potential With the structurally stiff and solidly balanced Cayman as the starting point, the Cayman S goes on to up the performance ante. The Cayman S comes with larger wheels, tires and front brakes than the Cayman. It is also infused with 20 percent more horsepower. The Cayman S carries a 295-horsepower, 3.4-liter flat-six engine based closely on the powerplant in the 911 Carrera. Boasting the Porsche VarioCam Plus adjustable intake-valve system and Motronic® sequential fuel injection, the Cayman S has 251 lb.-ft. of torque to take it from a standstill to 60 mph in 5.1 seconds on its way to a track-proven top speed of 171 mph (275 kmph) when equipped with its six-speed manual gearbox. More astounding is the fact that it still delivers 26 mpg in highway driving, 18 mpg in the city. And the Cayman S is certified as Low Emissions Vehicle, category two (LEV-II). Details The unique coupe in the Porsche family As a company with a deep, rich tradition of ground-breaking designs, it's no wonder that Porsche designers looked back before moving forward to create the Cayman and Cayman S. Depending on angle and perspective, elements of such legendary and by-gone Porsche roadsters as the 550 Coupe and 904 Carrera GTS Coupe are visible in the Cayman's sheetmetal. But these are countered by touches evoking facets of the current 911 Carrera and the Boxster roadsters.

A size all its own At 172.1 inches (4372 mm) long, the Cayman sits between the slightly smaller (about 0.5 inch) Boxster and the larger (by 3.5 inches) 911 Carrera. The Cayman is also 0.5 inch taller than the Boxster though both models are 70.9 inches (1801 mm) wide. Critical to their agility, both Cayman and Cayman S share a 95.1-inch (2415-mm) wheelbase. A body like no other The distinct fascia of the Cayman and Cayman S starts with a pronounced lower lip. The cars boast foglamps fixed to horizontal bars across the cooling-air intake opening. Those vents, which flank the strong lower lip, carry unique-to-Cayman vertical slats. The front decklid sweeps up between the strongly rounded front fenders to the windshield. The fenders house projector beam headlamps. (Bi-Xenon® headlamps are available as an option.) In the rear, the taillamps are wide and cut into the quarter panels. The specially designed dual tailpipes are mounted in the center of the rear and are framed by the meeting of horizontal bars. Above the beltline, the stunningly long and unique sloping roof slides down between the voluptuous rear fenders. Below the beltline, hockey-stick shaped rocker panels sweep up to air vents on the flanks. Clearly, as the Cayenne family of five-passenger SUVs looks like no other Porsche models while still exuding a very strong Porsche-family resemblance, so, too, the Cayman and Cayman S are simultaneously both distinctly unique and Porsche familiar. Form follows aerodynamic function The head-turning body of the Cayman and Cayman S is deeply rooted in the superb aerodynamics that high performance demands. The Cayman and the Cayman S with manual gearbox have a coefficient of drag of only 0.29. The slight modifications mandated by the installation of the Tiptronic S in the Cayman S raise that model's Cd to a still astounding 0.30. The front lip reduces lift, increasing downforce. This small spoiler results in an increase of 15 pounds (6.8 kg) of downforce at each front wheel at 167 mph (270 kmph). The result is markedly improved high-speed stability than otherwise. Rear-wheel, high-speed stability is enhanced by the split rear wing which automatically extends 3.15 inches (80 mm) when the car exceeds 75 mph (120 kmph). Unlike a traditional fixed rear spoiler, this wing minimizes air resistance while generating powerful downforce. Knowing that airflow beneath the car is as critical to stability and good fuel economy as the air over the top, Porsche aerodynamicists paid careful attention to underbody details. The shapes of the floorpan and all undercarriage components have been designed to ensure optimum engine, transmission and brake cooling, as well as road holding by helping keep the

tires for the Cayman in contact with the road surface. Ram air flaps in the front corners of the fan frames open at around 45 mph (70 kmph), reducing air forces on the front axle. Leaving no aerodynamic stone unturned, Porsche designers equipped Cayman and Cayman S with outside rearview mirrors similar to the ones used on the 200-mph Porsche Carrera GT supercar. Room for luggage, front and rear Due to their mid-engine configuration, the Cayman and Cayman S have two conveniently usable cargo holds. The front trunk has a 5.3-cu.-ft. (150-liter) capacity. Behind the engine and beneath the Cayman roadster’s hallmark sloping rear hatch is a trunk almost twice the size of the front one, 9.2 cu.-ft. (260 liter). The combined capacity of the two (14.5 cu.-ft. or 410 liter), rivals that of many sedans. The rear luggage compartment is fully carpeted and offers storage areas on either side of a stainless steel trim strip. A luggage retention bar between the headrests keeps objects safely in position in the case of sudden stops. Refined, personalized cockpit As the Cayman exterior both shares with and differs from other Porsche models, so does its interior. First and most obviously, the Cayman has but two seats. And though the basic interior configuration shares much with the Boxster roadster, the Cayman interior is unique. There are a wide rear package shelf, covered storage bins behind each seat and a revised binnacle above the instrument cluster with a fine metal grid in the open spaces between the circular instruments and the binnacle. There's abundant interior storage space thanks to an oversized glovebox and two center console bins, one open, one closed. The closable bin at the rear of the console houses a coin holder and a 12-volt power outlet. There are also closable pockets on both doors. Concealed cupholders are mounted behind a trim strip above the glove compartment. Each accommodates beverage containers up to 2.91 inches in diameter and swivels out independently as needed. The gearshift lever, steering wheel rim, handbrake lever, center-console storage compartment cover, and door panels are all finished in grain leather. Aluminum-colored trim accents the interior. The air vents on the dash panel on both Cayman models are Matte Black soft touch, replacing the former Volcano Grey. For this year, there's new optional natural leather available, Carrera Red. Palm Green is no longer offered.

Clear, quick reading instruments The instrument cluster, as has been a Porsche hallmark, is dominated by a large tachometer flanked by two slightly smaller gauges. For instant reading, the car's road speed is shown both in analog and digital form. Additionally, cars equipped with the optional Sport Chrono Package (Plus) system display information in the dot matrix display in the lower third of the tachometer. (I am making the assumption that the Cayman offers the same choice of steering wheels and driver and passenger seats as Boxster. If not, delete this entire section) Choice of steering wheels Driver comfort and control are both enhanced by the standard adjustable steering column in both Cayman and Cayman S. The steering column telescopes and has a tilt range of 1.57 inches (40 mm), measured at the steering wheel. Buyers may select from among three different steering wheels. The three-spoke design standard steering wheel is 14.76 inches (375 mm) in diameter and has a composite magnesium core. A smaller optional sports wheel has a 14.57-inch (370 mm) diameter and contoured grip recesses for improved control during dynamic driving. A third steering wheel is available with the optional Porsche Communication Management system. This wheel has buttons to operate the telephone as well as the audio and navigation systems. Wide choice of seats Among the seat options for 2008 are newly available sports bucket seats. These optional seats are essentially race seats that are perfectly comfortable and safe for everyday use. With folding backrests and integrated thorax side-impact airbags, the sports bucket seats meet all current federal safety standards. However, by dint of their carbon fiber-reinforced construction, the seats save 15 to 20 pounds (7 to 9 kg) over standard seats, depending on the seat. The standard leather buckets offer power adjustable backrests with manual fore-aft and height adjustment. Buyers can also opt for full-power leather upholstered seats with pneumatic lumbar support compliments of two inflatable air cushions. The driver's seat offers three memory settings. For those wanting more support than the standard seats but not the extremely deep contours of the new sports bucket seats, the Cayman and Cayman S may also be equipped with sports seats based on the standard units, but with added lateral support on both seat cushion and backrest. Optional adaptive sport seats offer full power adjustment of the seats' side bolsters. All seats in the Cayman and Cayman S are mounted low for optimum head room and to help keep the car's center of gravity low. In addition, the seats benefit from a Porsche-patented vibration dampening system.

Totally enclosed and safely ensconced The passenger compartments of both Cayman and Cayman S are equipped with three-point inertia-reel seat belts with belt-latch tensioners and belt-force limiters as well as six airbags There are frontal-impact airbags for both driver and passenger. The passenger seat has a special sensor that defeats the passenger-side airbag if the sensor determines that a small child is sitting there. The frontal airbags benefit from the use of an organic-based propellant which reduces their needed storage space and their weight, while also easing their recyclability. Each seat has a thorax-protecting side-impact airbag in its backrest outer bolster. In addition, Cayman and Cayman S are equipped with the Porsche Side Impact Protection (POSIP) system. This includes airbags that deploy upward from their housings in the door windowsills in the event of a side impact. POSIP's airbags provide a flat cushion that inflates to nearly 500 cubic inches (8 liters). These airbags are designed to help protect the heads of the driver and passenger from broken glass and objects that might enter through the window in the event of an accident. Crisp handling equals accident avoidance Knowing full well that all vehicles are safest by avoiding an accident, Porsche engineers understand that the awesome dynamic abilities are as much a safety feature as a performance attribute. They also understand full well that a vehicle's agility begins with its structure. Therefore, as with every Porsche model, at the crux of the Cayman family's performance is the car's stiff chassis. The Cayman and Cayman S both have a monocoque structure beneath the hot-galvanized, all-steel body. Thanks to the added stiffness compliments of the steel roof, the Cayman and Cayman S have structures that are 100 percent more resistant to flex than the Boxster roadsters. Torsional stiffness of the Cayman all but rivals that of the 911 Carrera. Building upon this solid platform, Porsche engineers created a sports car with the road holding and agility to challenge even the most skilled driving enthusiast, while delivering high levels of passenger comfort and safety. The Cayman and Cayman S boast Porsche's proven front suspension. This consists of springstrut axles with separately mounted longitudinal and track control arms to assure precise wheel guidance while controlling body roll. A specific-to-Cayman outbound/rebound stop spring within the shock strut reduces body sway, to help ensure stability and driver confidence even during periods of high lateral acceleration. As they do in front, the Cayman and Cayman S have specifically tuned spring-strut rear suspensions with longitudinal and track control arms.

Even better ride and handling with PASM Both the Cayman and Cayman S can be equipped with Porsche Active Suspension Management (PASM). This electronically controlled suspension allows the driver to select either a Normal or Sport setting depending on the driving situation and conditions. Besides allowing the choice setups, PASM also lowers the car's ride height by about 0.4 inch (10 mm). At the core of PASM are continuously adjustable shocks, a front and rear accelerometer and a dedicated electronic control unit. The PASM controller receives data about the vertical movements of the car's body as well as steering angle, vehicle speed, brake pressure and engine torque. The control unit then alters oil flow within the shocks to constantly provide the optimum firmness for the conditions and driver's desire. The system's active shocks have a similar structure as standard shock absorbers but incorporate an electronically controlled internal bypass valve that increases or reduces oil flow as needed. Intelligent damping control More than merely a two-setting suspension, PASM automatically adjusts to the driver's style. If left in Normal mode, the PASM will gradually increase the suspension's firmness if the car is driven with greater enthusiasm, generating higher dynamic forces. Rapid and sudden steering movements indicate to the control unit an immediate need to increase shock forces on both axles, to reduce swaying or rocking. By monitoring vertical motions of the body, the system can firm the shocks in Normal mode as reaction to a rough road, minimizing rocking. However, in Sport mode the same motions alert the controller to reduce the shock absorbing forces to ensure that the wheels remain in contact with the road and increase ride comfort. When the driver steps on the brakes, PASM firms the shocks to reduce body dive and, as the braking sequence continues, adjusts to softer shock absorbing, with different forces front and rear, to ensure solid tire-to-surface contact, even on broken pavement or rough roads, to minimize stopping distance. PASM also controls body squat during full-throttle acceleration. As the driver may briefly lift off from the throttle during gear shifts, PASM instantly adjusts firmness at front and rear axles to compensate for the brief change in loads. In Normal mode, PASM increases shock absorbing to prevent excess squat. In Sport mode, the shock absorbing is softened to improve traction. Stability is standard Both the 2008 Cayman and Cayman S are equipped with enhanced Porsche Stability Management (PSM) as standard equipment. PSM is a computerized system that relies on data from an assortment of sensors to help maintain the car's intended path should the car be puched to the edges of its dynamic limits.

By comparing speed of the individual wheels, vehicle speed and engine speed, PSM can determine that the car may be beginning to slip sideways or that a tire is losing traction and beginning to spin. To rein the car back under the driver's control, PSM applies individual brake force to a slipping wheel. If more drastic measures are required, PSM works with the engine control module to reduce engine power briefly. PSM is programmed to intervene less quickly when the car is moving below 45 mph (70 kmph) to allow the driver more latitude. Unlike some similar systems, PSM can be switched off by the driver. When deactivated, the enhanced PSM remains off until the driver firmly hits brake pedal, reaching the ABS threshold on at least one front wheel. This allows the skilled enthusiast driver more dynamic freedom. PSM is non-intrusive, never abruptly wresting control of the car from the driver. Variable-ratio steering The Cayman and Cayman S come with standard variable-ratio rack-and-pinion steering. This both increases agility and stability in higher speed maneuvers and reduces steering effort at slow speeds. When the steering wheel is within 15 degrees of center, the steering ratio remains similar to that used on the first-generation Boxster. This assures a smooth and calm driving experience, even on rough surfaces. When the steering wheel angle exceeds 15 degrees, the steering is instantly more direct, reducing lock-to-lock and quickening response. This enhances control while driving quickly on winding roads and when moving slowly, as when parallel parking. The Cayman coupes have a tight turning circle of only 36.4 feet (11.1 meters). Beyond ample braking power Like all Porsche vehicles, the Cayman and Cayman S boast four-wheel disc, antilock brakes. All four discs on both cars are cross-drilled and vented internally for optimum performance even under long periods of hard use. The front rotors on the Cayman are 11.73 inches (298 mm) in diameter and 0.94 inches (24 mm) thick while the rear brakes are 11.78 inches (299 mm) across and 0.79 inches (20 mm) thick. The Cayman S is equipped with larger front brakes: 12.52-inch (318 -mm) diameter and 1.10-inch (28-mm) thick. The Cayman S carries the same rear rotors as the Cayman. All four discs on both models are clamped by four-piston, monobloc aluminum calipers. The calipers for the Cayman are painted black and the Cayman S has red calipers. Reliable vacuum assist As with the brake systems on many cars, the Cayman and Cayman S have vacuum-assisted braking.

However, unlike most, the Cayman models do not rely on intake-manifold vacuum for that assist. Cayman and Cayman S have a mechanical vacuum pump driven by the right-hand cylinder bank's exhaust camshaft. The vacuum pump ensures a constant and reliable source of braking assist, regardless of ambient air pressure or steady open-throttle driving. Greater stopping power available Those drivers of the Cayman S who desire even greater braking power than standard may opt for Porsche Ceramic Composite Brakes (PCCB). Developed for the extreme use of motorsports, PCCB replaces the standard metal brake rotors with 13.78-inch (350-mm) ceramic discs. Besides delivering otherwise unobtainable levels of consistently superb braking performance under repeated heavy use, the ceramic rotors weigh approximately 50 percent less than the iron ones. PCCB reduces the car's unsprung mass by 34.4 pounds (15.6 kg). In their latest iteration, Porsche Ceramic Composite Brakes are more rigid than previously while providing more interior cooling ducts. The newest brakes have increased fiber reinforcement of the friction surface, significantly enhancing resistance to abrasion under high loads. Choice of tires and wheels—but no heavy spare The Cayman comes equipped with 205/55ZR17 tires in front and 235/50ZR17 in the rear. The more potent Cayman S rides on standard 235/40ZR18 front tires and 265/40ZR18 rear tires. Four different 19-inch wheels are available as options, including a tri-spoke wheel from the 911 Turbo. All optional front wheels are 8-inches wide, all rears are 9.5-inches wide. In addition, the larger wheels and tires of the Cayman S are optional on the Cayman. By removing the spare tire, jack and tire-changing tools from the Cayman and Cayman S, Porsche engineers saved 22 pounds (10 kg) per car. Instead, each car is equipped with a small electric air compressor and emergency tire sealant to allow drivers to get to a service station to have the damaged tire properly repaired or replaced. Peace of mind from a tire-pressure monitor To ensure optimum performance, fuel economy and performance, Porsche engineers provide Cayman and Cayman S drivers with a safeguard against driving on a damaged or an underinflated tire. Both Cayman and Cayman S come standard with Porsche’s Tire Pressure Monitoring System (TPMS). This system uses sensors at each wheel to constantly monitor inflation pressures. The system offers the driver two levels of warning should it detect a problem. If any tire shows a pressure drop of more than 2.9 psi but less than 5.8 psi from specifications, a text message in white lettering shows in the tachometer. This warning appears for 10 seconds each time the car is started.

If pressure drops more than 5.8 psi, or if inflation pressure drops at a rate of 2.9 psi or more per minute, the warning becomes more urgent and is displayed in red text. This warning appears as soon as the respective values are exceeded, whether the vehicle is stationary or moving. Powerful and environmentally friendly engines The Cayman is powered by a 2.7-liter horizontally opposed six cylinder that delivers 245 horsepower at 6500 rpm. The engine makes 201 lb.-ft. of torque over 4600 rpm to 6000 rpm. When mated to the standard five-speed manual gearbox, the engine propels the Cayman to 60 mph from a start in 5.8 seconds. When equipped with the Tiptronic S transmission, the Cayman gets to 60 mph in 6.7 seconds. Top speed at the test track is 160 mph (258 kmph). The Cayman S carries a 3.4-liter flat six that develops 295 horsepower and 251 lb.-ft. of torque from 4400 rpm to 6000 rpm. That's enough to take the Cayman S from zero to 60 mph 5.1 seconds when equipped with a manual gearbox and a blistering 5.8 seconds when equipped with the Tiptronic S. The Cayman S reaches a track-proven top speed of 171 mph (275 kmph). Besides delivering superb output—Cayman delivers 91.2 hp per liter, and Cayman S makes 87.1 hp per liter—these engines earn the Cayman and Cayman S certification as low-emissions vehicles. In fact, while the larger 3.4-liter engine earns LEV-II status, the smaller 2.7-liter engine surpasses it and the Cayman is certified as ULEV, or Ultra Low Emissions Vehicle. And with EPA fuel economy ratings of 20 mpg in the city and 29 mpg highway for the manual gearbox Cayman, and 18 mpg city and 26 mpg highway for the Cayman S with manual gearbox, both cars deliver Porsche performance without the stigma of a gas guzzler penalty. Classic, proven engine design Both engines share a similar architecture. In fact, the key difference between the engines is displacement, as dictated by their different cylinder bores. While both share a 3.07 inch (78 mm) stroke, the Cayman engine has a cylinder bore of 3.37 inches (85.5 mm) and the Cayman has 3.78-inch (96-mm) diameter cylinders. In addition, the Cayman engine has a slightly higher compression ratio than the Cayman S: 11.3:1 vs. 11.1:1. Otherwise, the engines both have aluminum blocks and cylinder heads. Both versions carry two overhead intake and overhead exhaust valves. The hallmark Porsche horizontally opposed cylinder configuration allows a low engine profile which contributes to the cars' low centers of gravity for stability and razor-like agility. Decades of Porsche racing experience allows the engineers to equip the engines with a dry sump lubrication system which ensures thorough engine lubrication even during the most extreme spirited driving while providing a compact engine package. The engines also share Motronic® engine management, six individual ignition coils and sequential fuel injection. And critically, both Cayman and Cayman S come standard with Porsche VarioCam Plus intake valve timing and lift control.

Attention to engine details The 2.7-liter engine features a light crankshaft and large bores in the hollow piston pins. The driver appreciates the engine's low rotating mass by its startlingly fast throttle response. Porsche's engine designers refined coolant flow around the exhaust valves in the 2.7-liter engine, reducing thermal loads which in turn reduces the chance of unwanted engine-damaging detonation. This seemingly minor tweak to the casting process permits the raising of the engine's compression ratio to 11.3:1, compared with the larger engine's 11.1:1. Since the external dimensions of the two engines are the same, they share the same variablelength intake manifold design. The manifold incorporates a resonance flap, and a double-chamber distributor pipe with a flap further downstream. The thresholds at which the flaps are moved are specific for the two engines, but the resulting high torque over a large engine-speed range is the same. The distributor pipe (resonance length) and the resonance flap (resonance cross-section) are controlled as a function of engine speed. As long as the two flaps are closed, the two banks of cylinders draw their intake charge air separately from one another. In effect, the engine acts as a double three-cylinder. In the lower speed range this effect increases engine torque significantly. Broad response thanks to variable valve timing Engine response and efficiency are also enhanced through the use of Porsche VariCam Plus adjustable valve lift and timing system. This valve management system adjusts intake valve lift and timing based on engine speed and load and is under the umbrella of the engine's main electronic controller. Though the VarioCam Plus operates far too quickly for the driver to be aware of it, the results are obvious. The effect is that of an engine with two different intake camshaft profiles, one set up for smooth and efficient around-town driving, the other a high-performance camshaft designed for high-speed. These two designs usually each preclude each other and most cars have a compromise of the two. Porsche VarioCam Plus removes the compromise and the driver benefits from the best of both driving worlds. Valve timing is controlled via a vane cell adjuster which continuously varies the two intake camshafts positions relative to crankshaft. The adjustment range covers a 40-degree range of crankshaft angle. Valve lift is varied by a system utilizing two cup tappets, one resting in the other. These tappets are actuated by separate cam lobes of differing size. The engine control module directs oil pressure to the appropriate tappet based on engine speed and load parameters. When non-pressurized, the tappet moves under the camshaft lobe, but exerts no pressure on the valve, in effect free wheeling.

Integrated dry sump lubrication with three oil pumps Given that the Cayman and Cayman S are designed to be driven quickly and enthusiastically, every element of the cars must withstand extended periods of high levels of lateral acceleration. Drawing from decades of racing success, Porsche engineers ensured the cars' engines would always be adequately lubricated, even under the most extreme driving conditions. This is guaranteed by integrated dry sump lubrication incorporating two re-delivery pumps extracting oil from the cylinder heads and pumping it into the oil sump. From here, a pressure pump delivers oil to the lubricating points within the engine, the lubricant being cooled by a compact oil/water heat exchanger. The integrated dry-sump system is so precise at monitoring oil levels that the engines have no engine oil dipstick. Instead, an electronic monitor measures the oil level and displays the result on the instrument cluster.

Shift gears or let them shift themselves Buyers can choose either a manual gearbox or the Porsche driver-shiftable Tiptronic S automatic transmission in either Cayman or Cayman S. Standard equipment in the Cayman is a five-speed manual gearbox. The Cayman S comes standard with a six-speed manual, which is optional on the Cayman. Both manual gearboxes have reinforced synchromesh rings on all gears. To deal with the increased output from the 3.4-liter engine in the Cayman S, its standard six-speed manual transmission is modified with shorter ratios for First and Second gears. The five-speed features triple synchromesh on First gear and double synchromesh on Second. The six-speed has triple synchromesh on First and Second gears and double synchromesh on Third through Sixth gears. The First and Second-gear synchromesh rings have a wear-resistant carbon coating. The Tiptronic S which is optional on both Cayman models is a five-speed that was revised in 2007. The transmission received new hydraulics and electronics as on the 911 series. The driver can either allow the Tiptronic S to operate as a fully automatic transmission, or use steering-wheel spoke mounted controls or tip the console-mounted shift lever, to up- and downshift for himself. Sport Chrono Package (Plus) The Tiptronic S offers greater performance for the enthusiast driver when utilized with the optional Sport Chrono Package (Plus), available as an option on both Cayman models. The Sport Chrono Package (Plus) allows more aggressive control maps for the engine speed limiter, Porsche Stability Management (PSM), Porsche Active Suspension Management (PASM), and the Tiptronic S. The feature is activated by pressing a button on the center console. The package also includes a separate stopwatch gauge on top of the instrument panel.

When activated, the Sport light in the instrument cluster is lit. More importantly, the Tiptronic S is switched to manual mode and the electronically controlled throttle valve responds more quickly to input from the accelerator pedal. And if the driver's enthusiasm gets the better of him and he holds the accelerator down past the engine's redline, the speed limiter intervenes far more abruptly than otherwise. When the driver does shift gears, the changes are crisper than otherwise. With the Sport Chrono Package (Plus), agility is increased by changes to PSM operation. When accelerating, higher antispin control thresholds allow more slip from the rear wheels. Similarly, the antilock braking system intervenes later in the braking cycle than otherwise, permitting the skilled driver to brake deeper and harder into fast bends. The driver always has the option of deactiving PSM and taking total control of the car's dynamics. On cars equipped with PASM, activating the Sport Chrono Package (Plus) provides firmer suspension settings, reducing even further any body lean through corners and enhancing contact between the tires and the road. However, there are circumstances, such as on wet or snowy roads, in which a softer suspension setting can enhance traction and the PASM button can be pushed to put the car in its Normal setting even when the Sports mode is active. The Sport Chrono Package (Plus) feature includes a stopwatch with lap-counting function. A steering column stalk allows the driver to record various route segment times, which can be reviewed graphically on the optional Porsche Communication Management (PCM) system screen. In Porsche testing at Germany's famed Nürburgring, a Cayman S equipped with the Sports Chrono Package (Plus )was three seconds per lap faster around the test track than an otherwise identical car. Plethora of options In addition to the Sport Chrono Package (Plus) there are many options available for the Cayman and Cayman S. At the top of the list is the enhanced Porsche Communication Management (PCM). This boasts a DVD-based navigation system. The unit's DVD drive is remotely mounted which allows the dashmounted CD drive on the PCM to be used exclusively for audio CDs, or MP3 encoded discs. The navigation system features 23 stages of map magnification from a minimum resolution of 55 yards (50 meters). Information is displayed on a 5.8-inch color monitor. Available in conjunction with PCM is a multifunction steering wheel with redundant controls for audio, navigation and telephone functions. PCM may also be equipped with an electronic logbook that can record mileage, journey length, date and time as well as the starting point and destination address for any trip. Also optional is an extended navigation module that includes “back-trace” technology to allow a return to a starting point, even on roads not in the navigation system database.

The Cayman comes standard with a four-speaker audio system and the Porsche CDR-24 CD radio. The Cayman S comes standard with a 180-watt Porsche Sound Package (Plus) including nine speakers: one 2.5-inch (70-mm) mid-range speaker and two .75-inch (19-mm) tweeters in the dash, two 4-inch (100-mm) mid-range speakers and two 8-inch (200-mm) woofers in the doors, and two 4-inch (100-mm) mid-range speakers in the rear compartment. This system is available as an option in the Cayman. Both Cayman models also offer the option of a 325-watt Bose® Surround Sound System. It has ten speakers and a seven-channel digital amplifier specifically designed for the Cayman interior. Other options include Bi-Xenon® headlamps and Park Assist which uses ultrasound to measure the distance from the car's rear bumper to the nearest obstacle and warns the driver as needed. ###