1a Honda Xr100r Xr100 R Oem Engine Carb W/ Throttle Body Cable Assembly Ahrma 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.

BMW 7-series (2009) first pictures

By Ben Pulman First Official Pictures 05 July 2008 00:00 This is BMW’s fifth-generation 7-series, and despite looks inspired by the Concept CS, if we’re honest the new car doesn’t look much different from the old car. Worry not though, as there are plenty of technical highlights to surprise and delight. Rear-wheel steer, Efficient Dynamics technology, night-vision, unrestricted internet access, a revised iDrive system and an all-new 3.0-litre diesel engine stand out.

Audi sticks with Michelin – which is good for Michelin road tyres

Audi choose Michelin for 2012 races Audi are to stay with tyre maker Michelin and this year’s Le Mans 24hr cars will be shod with Michelin tyres. Have you ever wondered why car race teams choose one tyre maker over another? Well, in F1 it’s because they don’t have a choice, but elsewhere it’s different – they can choose.