Porsche launches ultimate naturally-aspirated 911

Check out the GT3 RS 4.0
May 2, 2011

TopGear.com.ph Philippine Car News - Porsche launches ultimate naturally-aspirated 911 in GT3 RS 4.0

Porsche can't seem to stop producing variants of its 911 as the German carmaker recently launched not just another variant of its flagship nameplate but a limited-edition, more powerful version of its GT3 RS.

The 911 GT3 RS 4.0 is a road car with "all the attributes that have made the Porsche 911 GT3 a serial winner on the race track," from the flat-six engine's crankshaft lifted unchanged from the 911 GT3 RSR race car's engine to the titanium-made forged pistons' connecting rods.

The "4.0" from the car's name is derived from its 4.0-liter engine. Note that this is the biggest 911 model engine ever, it's also the most powerful naturally aspirated engine from Porsche with an output of 125hp-per-liter or, for those who are mathematically-challenged, 500hp. Its torque, meanwhile, is at 460Nm.

Paired to the engine is a six-speed manual sports transmission that gets the GT3 RS 4.0 to run the 0-to-100kph sprint in 3.9 seconds. With its gearing designed for circuit racing, the 200kph mark can be achieved in less than 12 seconds. To quantify the GT3 RS 4.0's capabilities in a real-world setting, how about this: it lapped the Nürburgring's Nordschleife track--that's over 22 kilometers--in 7 minutes, 27 seconds.

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According to Porsche, its latest limited-edition model is able to achieve those figures through "meticulously coordinated details."

Besides using racing-derived suspension components, the 911 GT3 RS 4.0 was put on a strict diet as its bucket seats, bonnet and front wings are all made of carbon fiber while its rear windows are made of plastic. Even its carpets are "weight-optimized," giving the car a curb weight of just 1,360 kilograms. This translates to a power-to-weight ratio of just 2.72kg-per-hp.

This limited-edition 911 comes in white as standard and has a number of unique characteristics like its wide track, low ride height, large rear wing with adapted side plates and a central twin tailpipe. Its body has also been optimized aerodynamically, particularly with the addition of the lateral front air deflection vanes which makes its first appearance on a production Porsche. According to Porsche, the aerodynamic tweaks exert an additional 190kg on the car as it travels at its top speed.

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The Porsche 911 GT3 RS 4.0 is limited to just 600 units and will officially go on sale in July.


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