Aston Martin Vantage news article provided by CompuCars
Aston Martin Cars
Friday 23 May 2008
Gaydon, 23 May 2008. Aston Martin’s V8 Vantage – originally launched to widespread critical acclaim at the Geneva Motor Show in 2005 – is to receive significant technical enhancements, reaffirming the car’s position as one of the world’s most desirable and exhilarating sports cars.
While the universally distinctive and award-winning shape of the V8 Vantage is retained, the car benefits from a number of technical changes which include significantly up-rated engine performance from a new 4.7 litre power unit in both Coupe and Roadster variants. Other changes include revised dynamics to take full advantage of increased power and torque availability, improved Sportshift™ transmission software and a new sports suspension option.
The 4.7 litre V8 engine has a power output of 420bhp (an 11% increase on the previous 4.3 litre unit) and delivers peak torque of 470Nm (15% increase), providing the V8 Vantage with new reserves of mid-range performance, an improved 0-60mph time of 4.7 seconds and top speed of 180mph (288km/h). Combined European fuel economy and CO2 emissions are also improved by 13% (Sportshift™).
Inside, the changes include a new centre console and revised switchgear and the introduction of an ECU replacing the previous V8 Vantage key. Externally, the acclaimed V8 Vantage design appearance is enhanced with a range of new standard and optional 19’’ alloy wheels.
Aston Martin Chief Executive Officer, Dr Ulrich Bez said: “Continued development and evolution of our unique VH (Vertical-Horizontal) architecture has brought even higher levels of refinement and dynamic performance to our whole range.
“With the new 4.7 litre engine and associated changes we have taken the V8 Vantage to new levels of performance to produce an even more desirable sports car.
“The V8 Vantage is now the most successful Aston Martin in our history and we are confident these changes will continue its appeal and driving enjoyment for both new and existing customers.”
Improvements in performance have been achieved through a number of carefully developed changes to Aston Martin’s acclaimed V8 engine.
The cylinder bore and stroke has been increased from 89mm to 91mm and 86mm to 91mm respectively, giving a total displacement of 4735cc.
The increase in cylinder bore is facilitated by a move to cylinder liners that are pressed into the pre-machined aluminium alloy block, allowing a thinner liner than was possible with the cast-in design of the 4.3 litre engine.
The new forged steel crankshaft provides the 91mm stroke and incorporates new holes in the counter weights for reduced rotating mass and improved inter-bay breathing. New forged steel con-rods and cast aluminium pistons complete the capacity-related changes.
Other key changes include efficiency improvements to the dry sump lubrication system, including a new sump casting with oil pick-up points moved from the front and rear to the sides of the sump. The cylinder heads are modified with a new intake port and an inlet valve size increase from 34.9mm to 35.9mm. The intake manifold has been modified to match the new port to optimise air flow.
The V8 Vantage transmissions have also undergone changes to improve performance and to handle the increased levels of power and torque. Both the standard manual stick-shift gearbox and the optional Sportshift™ transmission benefit from a modified clutch and flywheel, reducing clutch pedal efforts and delivering a 0.5kg weight saving, reducing the rotating masses within the powertrain, and hence increasing engine responsiveness.
Aston Martin’s Sportshift™ transmission has undergone a series of specific changes to broaden the capabilities of the gearbox to offer customers enhanced comfort and convenience with sporting capabilities. Changes inc
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