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

Porsche changes CEOs

The changes continue at Germany's most famous sports-car maker: Porsche CEO Michael Macht is being replaced after less than a year at the helm by Matthias Mueller. The changes take effect on Oct. 1.

Acura NSX prototype will drive Mid-Ohio prior to IndyCar race

Acura's new, long-awaited NSX is still two years from arriving in customers' impatient hands, but attend the Izod IndyCar Series race at Mid-Ohio on Aug. 4 and you'll have the opportunity to see and hear the car in action. Acura on Thursday released an image of a prototype NSX, and said the car will take to the racetrack just prior to the Honda Indy 200 in Lexington, Ohio.

Merc to revive straight six, plus 4cyl and smaller V8s

Mercedes has just signed off a new engine family which will see most full-sized Mercs in future run four-cylinders, downsized V8s and… straight sixes. A friendly Mercedes engineer recently met CAR to disclose the engine plans for future models, including the surprise disclosure that Merc plans to switch to straight sixes, like its rivals over in Munich.  It's fair to say I almost choked on my breakfast croissant when I found out the details of the next MB engine generation which has just been signed off for release in 2015. Mercedes' future four-cylinder engines Again, there will be a family of new low-cost fours, and the big-bore V8s will be replaced by a series of downsized turbocharged 4.0-litre units.