Arias Pistons 12.5:1 Compression 82mm Bore Honda B-series on 2040-parts.com

Tomorrow’s world: Fiat's MultiAir engine tech

By Jesse Crosse Motor Industry 14 October 2009 16:50 Fiat this year launches what it claims is a big step forward in variable valve timing: MultiAir. It's the first time that a manufacturer has made a properly variable valve system a production reality, and will slowly be rolled out across most of Fiat's and Alfa's car ranges.How does Fiat's MultiAir vary from existing variable valve timing (VVT) systems?Current VVT systems rely on mechanical systems to open and close the valves. Engineers have long understood the benefits of changing valve opening and closing times to tweak an engine's power and emissions performance, depending on the need for power or parsimony.Valves are an engine's nose and mouth – it inhales through inlet valves and exhales through exhaust valves.

Mercedes C63 AMG DR 520 revealed

The Mercedes C63 AMG DR 520 - Saloon & Estate The first thing that springs to mind when you drive a Mercedes C63 AMG is not usually ‘It could do with a bit more power’. But of course, a bit more power is always nice even when you’ve already got plenty. Just so long as it’s usable.

Brits would rather drive than walk

ALMOST HALF (47%) of all people in the UK would rather drive than walk for a journey of up to one mile and 48% drive to work instead of trying to use any other form of transport. Despite a one mile journey taking very little more time to walk than drive, only 38% of drivers said they would use their feet in place of the car for such short journeys. Even though short journeys cause the most pollution and damage to cars, half said they would still drive.