Its 2 All New V8 Engines for the 2010 Range Rover

Its 2 All New V8 Engines for the 2010 Range Rover

The Range Rover Sport, Land Rover's sporty luxury SUV, enters 2010 with two all-new V8 engines.

Although Land Rover labels these 5.0-liter DOHC engines "LR-V8," they are actually the latest iterations of the Jaguar AJ-V8 family, shared with the 2010 Jaguar XF sedan. Both engines have many new features, including a novel spray-guided direct injection system that uses multiple injection holes to optimize combustion at all speeds, providing faster engine warm-up, greater power, and lower emissions. Direct injection and reverse-flow cooling, which sends coolant to the heads before the block, allow higher compression ratios and greater spark advance without detonation. A unique variable camshaft timing system uses the torque generated by the motion of the valves to continuously adjust all four cams. Land Rover says this system -- an industry first -- is faster and more efficient than a conventional hydraulic setup. Each camshaft also has separate profiles for low- and high-rpm, altering valve lift to enhance breathing at all engine speeds.

The Range Rover Sport HSE has a normally aspirated version of this engine, rated at 375 horsepower and 375 lb-ft of torque -- 75 horsepower more than in 2009, and only 15 horsepower shy of last year's supercharged engine. The Supercharged model adds an Eaton Twin Vortices Series (TVS) supercharger, packaged in the valley between the cylinder banks. It feeds each bank via a separate air-to-water intercooler. The supercharger boosts the 5.0-liter V8 to 510 horsepower and 461 lb-ft of torque.

Both engines have impressive power and a rich-sounding growl. Although the Supercharged model is not as powerful as the 555-horsepower BMW X5 M, it gives the Range Rover Sport fierce acceleration that belies its three-ton mass. Both LR-V8s are thirsty, however. EPA ratings are 13/18 for the HSE, 12/17 for the Supercharged, and premium fuel is required.

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