Auto Car | Noble M12 GTO 3R | The 2968cc, twin-turbocharged V6 used in both Noble models is transversely mounted in front of the rear axle, directly behind the cabin. It features four valves per cylinder and double overhead cams to each bank of cylinders. The all-alloy engine is heavily modified from standard, with many bespoke components fitted during build. It produces 352bhp (357PS) at 6200rpm, and is redlined at 7200rpm.
On the road, 350lb ft (475Nm) of torque produced between 3500 and 5000rpm makes the car immensely flexible and easy to drive. Even at 3000rpm, the engine is producing 80 per cent of its available torque. There's also very little lag from the twin Garret T25, water-cooled turbochargers, meaning a particularly linear response throughout the rev-range. The turbochargers run a maximum 0.7 bar of boost and are equipped with an air to air intercooler, centrally mounted at the rear of the car.
A completely new design of exhaust for the 3.0-litre engine gives you the choice of enjoying the sporty engine note under hard acceleration, or savouring the V6's inherent refinement at cruising speeds.
The all-new Getrag-Ford six-speed manual gearbox, standard on GTO-3R models, has closer intermediate ratios than the GTO-3's five-speed gearbox, but has an even more relaxed top gear than before, running 26.5mph per 1000rpm. This means that at 70mph the engine is turning over at a mere 2650rpm.
Also standard with the GTO-3R's six-speed gearbox is a Quaife Automatic Torque Biasing differential. This unique, patented unit shares the basic characteristics of a conventional limited slip differential, which prevents loss of drive when one wheel starts to slip. However, the ATB differential has the advantage of gears, rather than plates, which can wear or break, and therefore servicing is reduced and reliability improved. The ATB also eliminates much of the understeer that is inherent in conventional LSDs, by transferring more torque to the driven wheel that needs it most, rather than it being split equally between both wheels; this prevents the rear wheels trying to push the front wheels wide when cornering.
On the road, 350lb ft (475Nm) of torque produced between 3500 and 5000rpm makes the car immensely flexible and easy to drive. Even at 3000rpm, the engine is producing 80 per cent of its available torque. There's also very little lag from the twin Garret T25, water-cooled turbochargers, meaning a particularly linear response throughout the rev-range. The turbochargers run a maximum 0.7 bar of boost and are equipped with an air to air intercooler, centrally mounted at the rear of the car.
A completely new design of exhaust for the 3.0-litre engine gives you the choice of enjoying the sporty engine note under hard acceleration, or savouring the V6's inherent refinement at cruising speeds.
The all-new Getrag-Ford six-speed manual gearbox, standard on GTO-3R models, has closer intermediate ratios than the GTO-3's five-speed gearbox, but has an even more relaxed top gear than before, running 26.5mph per 1000rpm. This means that at 70mph the engine is turning over at a mere 2650rpm.
Also standard with the GTO-3R's six-speed gearbox is a Quaife Automatic Torque Biasing differential. This unique, patented unit shares the basic characteristics of a conventional limited slip differential, which prevents loss of drive when one wheel starts to slip. However, the ATB differential has the advantage of gears, rather than plates, which can wear or break, and therefore servicing is reduced and reliability improved. The ATB also eliminates much of the understeer that is inherent in conventional LSDs, by transferring more torque to the driven wheel that needs it most, rather than it being split equally between both wheels; this prevents the rear wheels trying to push the front wheels wide when cornering.
Source : www.netcarshow.com
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