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Old May 12, 2004 | 09:48 AM
  #17 (permalink)  
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Rob.M
Down Shift Magazine
 
Joined: Jul 2003
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What top picture?

Originally posted by g-50Cab
The top picture is a Twin Turbo - not a GT3

GT3:
Rear-mounted, 3.6 liters, 6 cylinder, rear-wheel drive, two-seater, coupe

MSRP: $99,900 (USA)
MSRP: $139,000 (CAN)

380 hp @ 7,400 rpm

285 lb-ft @ 5,000 rpm

0-62 mph: 4.3 sec
Top Track Speed: 190 mph

City: 15 mpg
Highway: 23 mpg

The new 911 GT3 is powered by a water-cooled flat-six featuring four-valve heads and VarioCam variable valve timing. One of the most accomplished naturally aspirated engines we've developed for the road, this compact unit features ultra-lightweight titanium connecting rods, a dedicated oil-cooler system and dry sump lubrication with an engine-mounted tank.

The engine is located behind the rear axle-line in the traditional 911 position. The total displacement of 3.6 liters is good for 380 hp at 7,400 rpm, or an extremely high specific output of nearly 106 hp per liter of cubic capacity.

Maximum torque of 285 lb-ft is available at 5,000 rpm, while the maximum engine speed runs to 8,200 rpm depending on gear selection.

The result is an engine that not only sounds good on paper, it is also capable of delivering the high performance and distinctive tone of the 911 GT3.

Key characteristics of the GT3 engine include optimized cylinder charging (thanks in part to VarioCam variable valve timing) as well as exceptional balance of all moving masses ensuring cultured performance at all times. The ultra-lightweight titanium connecting rods and weight-optimized pistons help minimize the oscillating masses in the engine, thereby enabling a more dynamic and immediate response. The valve gear also benefits from Porsche race engineering. The new lightweight valves, for example, are actuated by means of self-adjusting tappets that are 42% lighter than the previous generation of components. By minimizing inertia in the valve gear, the engine can rev to between 8,000 and 8,200 rpm depending on gear selection. This in turn enables a closer ratio gearbox offering much faster acceleration.

Air is supplied through a new lightweight manifold featuring shorter tubes and optimized inlet ports. Both inlet camshafts use VarioCam adjustment to achieve optimum exhaust, torque and power characteristics based on current engine load at all engine speeds.

For the driver, the result is a more immediate response to even the lightest throttle input, as well as phenomenal reserves of power and torque, and a breathtaking sound from intake and exhaust that's driven by the high-revving engine. In short: all the characteristics you'd expect from a racing car in a package that's equally at home on the road.
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