Porsche 911 Targa 4, 2009
The 911 Targas differ from both the Carrera Coupes and Cabriolets by dint of their stunning glass tops. The all-wheel drive Porsche 911 Targa 4 and Targa 4S are unique with roofs comprised entirely of two transparent panels. The glass extends from the windshield header back to the leading edge of the engine cover, from side frame to side frame.
More Power from Less Fuel
Both the Porsche 911 Targa 4 and 911 Targa 4S receive new engines which boast direct fuel injection, new two-piece crankcases and revised intake and exhaust systems along with Porsche VarioCam Plus intake-valve timing and lift system. By injecting the fuel directly into each cylinder's combustion chamber rather than the intake as is more common, combustion is cleaner and more complete. This technology reduces exhaust emissions and fuel consumption while simultaneously increasing engine potency.
The results are felt and appreciated immediately by the Porsche 911 Targa 4's driver. Thanks to a 6.2 percent increase in horsepower and a 5.3 percent gain torque over last year's model, the 3.6- liter engine goes from 325 to 345 hp and receives a gain in torque from 273 to 288 lb.-ft. A manual gearbox equipped 2009 911 Targa 4 can accelerate from 0 to 60 mph (96 km/h) in 5.0 seconds.
Two Clutches, No Clutch Pedal
To take full advantage of the newly designed engines, Porsche is offering drivers a transmission that delivers quicker acceleration than is possible with the standard manual gearbox while maximizing fuel efficiency. The new PDK (from the German Porsche- Doppelkupplungsgetriebe), or Porsche double-clutch, replaces the Tiptronic S as the optional gearbox in both the Porsche 911 Targa 4 and Targa 4S.
Porsche was the first automaker to successfully use this transmission technology back in the 1980s when the transmission was developed for the mighty Porsche 962 Group C race car. The Porsche 911 Targa 4 or Targa 4S driver can allow the seven-speed PDK to shift up and down automatically, or he may opt to manually shift via steering-wheel mounted paddles or the console-mounted lever, the same as with the Tiptronic S.
All-Weather Maximum Performance
In addition to their unique two-section glass roofs, the Porsche 911 Targa 4 and Targa 4S offer their drivers the added benefits of all-wheel drive. For 2009, these cars benefit from the same electronically controlled Porsche Traction Management (PTM) found under the awesome Porsche Turbo, as well as the new mchanical locking differential standard.
PTM replaces the previous models' viscous-coupling, mechanical all-wheel drive system and operates more quickly and seamlessly than its predecessor. PTM varies the torque split infinitesmely and absolutely between front and rear wheels as needed for optimum traction. However, since most purists feel-and Porsche's engineers staunchly believe-that rear-drive is critical for optimum sporty driving, PTM directs two thirds of the engine's torque to the rear wheels under normal driving conditions.
When the system determines it's needed, PTM diverts engine power and torque to the front axle in millisecond cycles. Particularly at very high speeds, all the driver feels is the car's significant stability.
Bigger, Grippier Brakes
Porsche engineers firmly believe that a car's deceleration ability must always out-perform its ability to accelerate. Commensurate with the gains in engine performance, the 2009 Porsche 911 Targa 4 and Targa 4S receive added braking capability. All four brake rotors on both cars are cross-drilled, inner vented and now 12.99 inches (330 mm) in diameter.
In addition, the monobloc, four-piston calipers are now the same as those used on the 911 Turbo. Critical refinements have been made to the airflow around the wheels to increase brake cooling all around as well.
Instantly Recognizable and Aerodynamic
With their full-glass canopy - from beltline to beltline, front cowl to rear engine cover - the Porsche 911 Targa 4 and Targa 4S look like nothing else on the road, Porsche or otherwise. But from the beltline down, the cars share a strong resemblance to the current Carrera 4 and Carrera 4S models.
Clearly, the most striking element of the 911 Targa is its 16.58 sq.-ft. glass roof. The roof is comprised of two separate segments: a sliding panel over the front seats and a hinged tailgate at the rear. The electrically operated front panel fully opens or closes in seven seconds. When open, the glass panel slides snugly beneath the tailgate, providing almost five square feet of open space above the passenger cabin.
The sliding roof comes standard with a new sun shade offering greater privacy and more effective thermal protection than before. When closed, the sun shade covers the entire area of the sliding roof panel, opening and closing electrically and independently of the roof itself.
The glass roof and tailgate are made of special tinted glass, which protects the occupants from ultraviolet radiation and excessive heat even in bright sunlight.
The rear section of the Targa top opens for access to the interior, particularly handy for getting to the storage area behind the rear seatbacks. The Porsche 911 Targa 4 and Targa 4S are the only models in the Porsche 911 range with a separately opening tailgate.
More Sophisticated and Comfortable
Beneath the glass top, the Porsche 911 Targa 4 and Targa 4S boast luxuriously appointed passenger cabins. Like all Porsches, the cars offer their occupants the protection of six airbags: dual frontal-impact airbags as well as two seat-mounted thorax-protecting side-impact airbags and two head-protecting side-impact curtain door-mounted airbags.
Interior refinements include a revamped center console highlighted by a new Porsche Communication Management system-PCM 3.0-and the availability of ventilated front seats.
The optional navigation module now has a 40 GB hard drive. Other available features with the newest PCM include XM satellite radio with XM NavTraffic capability, Bluetooth connectivity, an iPod port, a USB port and an auxiliary jack.
Interior comfort may be further enhanced thanks to optional seat ventilating fans, available in conjunction with heated seats. These circulate air through the seatback and cushion upholstery to expedite cooling, heating and/or drying the driver and passenger.
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