Although the 2009 Audi TT has improved greatly on previous models in terms of general fun-factory and handling, enthusiasts still don't place it in the same league as the M Coupes, Boxter/Caymans and S2000s of the world. The S line model, which debuted in 2008, served up a big helping of improvements, but Audi fans still wanted more.
2009 Audi TT-RS
Audi is once again producing a five-cylinder engine – and a very special one at that. Arriving at dealerships this summer, the TT RS has a turbocharged 2.5-liter engine with direct gasoline injection; it produces 250 kW (340 bhp) and 450 Nm (331.90 lb.-ft.) of torque. The blazing five-cylinder engine enables the TT RS to perform extraordinary feats. In conjunction with quattro permanent all-wheel drive and a high-performance chassis, the engine makes the compact Audi TT RS a top-notch sports car – available as a coupé or roadster.
Sporty five-cylinder gasoline engines have an extended legacy at Audi. The most famous is arguably the turbocharged 2.1-liter engine within the Audi quattro. The first version, which was released in 1980, offered an outstanding 147 kW (2 hundred bhp). And the Sport quattro from 1984, immediately stimulated through motorsport, delivered a whopping 225 kW (306 bhp). For 25 years, turbochargers and quattro have been a dynamic system for achievement.
Audi has resumed using this recipe. Designed from scratch, the 5-cylinder engine combines a turbocharger with FSI direct fuel injection to raise the TT RS to a excessive-overall performance sports automobile. The TFSI provides 250 kW (340 bhp) from a displacement of 2,480 cc (151.34 cu in): a selected output of one hundred.8 kW (137.1 bhp) consistent with liter.
The power-to-weight ratio is likewise exceptional. In the case of the Coup?, which weighs in at an insignificant 1,450 kilograms (three,196.70 kilos), the energy-to-weight ratio is just four.3 kilograms according to bhp.
The TT RS Coup? Rockets from 0 to 100 km/h (0 to sixty two.14 mph) in four.6 seconds; the Roadster wishes just a tenth of a 2nd longer. The restrained top pace of 250 km/h (a hundred and fifty five.34 mph) is merely the legit determine for both versions; as an option, Audi can boom it to 280 km/h (173.Ninety eight mph).
Almost even greater extraordinary is the competitive pulling electricity. The maximum torque of 450 Nm (331.90 lb.-toes.) is always to be had between 1,600 and five,300 rpm. In addition, the TT RS overtakes with out the slightest attempt. Last however now not least, its engine makes passengers? Skin tingle time and again way to its speedy and powerful response, its inspiring unfastened-revving man or woman, and its unmistakably guttural tailpipes: 5-cylinder classical tune with the aid of Audi!
As an uncompromising sports-automobile engine, the two.Five-liter TFSI is extremely-compact. Just forty nine centimeters (19.29 inches) in length, it is perfectly suited for transverse installation within the TT RS. And its weight of simply 183 kilograms (403.Forty five kilos) additionally units a document. The crankcase is product of vermicular-graphite cast iron. This high-tech cloth unites the utmost in strength with low weight; it has in any other case best been used for the big TDI engines from Audi. Perfectly placed reinforcements enhance the block?S loadability. The lightweight cylinder head, the pistons, and the connecting rod are light-weight in addition to excessive-electricity.
The extremely-powerful five-cylinder engine is extremely gasoline-green, requiring a mean of simply nine.2 liters/100 km [25.57 mpg] as regards the Coup? (Roadster: 9.Five l/a hundred km [24.76 mpg]). Switchable flaps in the intake manifold blend the incoming air in a calculated configuration. Injected at a stress as high as 120 bar through the common-rail device, the fuel swirls intensely within the combustion chamber ? Which in flip cools the walls. This eventually facilitates a compression ratio of 10.0:1, which is very excessive for a turbocharged engine. Both of the adjustable camshafts, managed via chains, also decorate charging performance with appreciate to the air-fuel combination.
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