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Nissan to reveal all-new model in Geneva

Nissan plans to show a new concept vehicle and a revised 350Z on the Geneva motor show floor. The big news is in the form of the new concept - yet to be uncovered - and Nissan remains tight-lipped. The company claims the new model will "reinforce the company's profit and growth aspirations in Europe". We'll be there to tell you if the automaker looks to reach its goal.

What we do know is that there have been extensive mechanical revisions made to the flagship 350Z sport coupé. Nissan has fitted nearly 80 per cent new engine parts to the 'next generation' 3.5-litre V6 engine, boosting power to 309bhp at 6800rpm and torque to 264lb.ft at 4800rpm.

Nissan claims to have achieved this by employing a wider operating range for the variable intake and variable valve timing systems, as well as a common length exhaust manifold to reduce back pressure. Those changes supposedly act to boost low and mid-range torque.

The introduction of a second knock sensor, an asymmetric piston pattern, improved cylinder cooling and iridium spark plugs are said to improve efficiency of the ignition cycle, while an increase in compression ratio from 10.3 to 10.6 has been key in liberating more top end power.

Engineers have also increased maximum engine speed by 500rpm to 7500rpm via a larger crank journal and crank pin. At the bottom of the engine, a ladder frame has been added to stiffen the crankcase and reduce vibration.

Despite these changes, weight and fuel consumption are said to remain unchanged, but the engine's centre of gravity has been lowered by 15mm. This is likely to further improve the car's already renowned composure around bends. The 350Z has also seen a change in standard tyre fitment and is now equipped with Bridgestone Potenza RE050A's, a tyre Ferrari uses on some of its models.

The 350Z's bonnet, subtly redesigned to accommodate the new powerplant, is reminiscent of that of its forebear, the iconic 240Z. Three new exterior colours will be offered: Temper Orange (said to contain a subtle green 'flip'), Precision Grey, and Night Blue. These will complement a new 'frost grey' interior trim, whose pale tone is meant to add a touch of sophistication to the car's interior. Active headrests have also been fitted to the seats to minimise the chance of neck injury in a rear impact.

Sales of the revised 350Z will begin in the UK in May. We'll let you know what the new car in Geneva is as soon as the covers come off!

Monday March 5

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