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PONTIAC, Mich. ? Two of General Motors newest, high-performance overhead cam engines ? the 2.0-liter Ecotec Supercharged and 2.8-liter V6 Turbo ? have been named among the industry?s 10 best engines of 2006 by the editors at Ward?s Communications.
2.8L V6 Turbo
?A sophisticated mid-displacement V-6 and turbocharging are a remarkably effective combination,? says Visnic. ?GM and Saab have created an impressive performance-car engine with high specific output and the thrill of turbocharging.?
The 2.8L V6 Turbo is the newest addition to GM?s contemporary global V-6 engine family. All engines in the global V-6 family share traits that include a 60-degree lightweight aluminum cylinder block with iron cylinder sleeves, an aluminum structural oil pan and aluminum cylinder heads, dual overhead camshafts and four valves per cylinder. The 2.8L V-6 Turbo builds on those strengths with components and technology developed with Saab specifically for the turbo system, variable valve timing, and a variable fuel pressure system to ensure smooth idle and driving characteristics.
The 2.8 turbo system features a unique, twin-scroll turbocharger. It has an integral bypass valve and is fed by two exhaust ducts ? one from each cylinder bank. Separating the exhaust gas pulses with two compressor zones improves gas flow and reduces energy loss. The turbo system?s charge cooler promotes performance by reducing the temperature of inlet air.
Delivering 250 horsepower at 5500 rpm and 258 lb-ft of torque from 1800 ? 4500 rpm, the 2.8 V6 Turbo is standard globally in all 2006 Saab 9-3 Aero models, which includes the Sport Sedan, SportCombi and Convertible. It is also featured in Europe in the Opel Vectra and Cadillac BLS.
The 2.8L V-6 Turbo is built at Holden?s Port Melbourne, Australia global V-6 engine facility.
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