Time was when a valve job was done with some valve-grinding compound and a vacuum cup on a stick. But no more. Today's high performance engines require the same machining precision in the valves that ...

The 12V Cummins diesel engine compares to the 24V version as a simpler model. The 24V engine received numerous upgrades and ...

A hundred years ago, Opel developed it’s first engine utilizing four valves per cylinder for use in the 1913 Grand Prix racing car. Little did they know at the time that this innovative technology ...

General Motors sees a future for engines with overhead valves, a technology most automakers have abandoned in favor of overhead camshafts. GM will introduce a new family of overhead-valve (OHV) V-6s ...

While the engineering community continues to explore the benefits of electric and hybrid vehicles—i.e., the environmental and renewable energy factors—the automotive market is still dependent on ...

Modern engine bays are filled with black plastic where bright cast aluminum once sat, and few parts symbolize that shift more ...

Set to debut in a new 1.6-liter 4-cylinder Smartstream turbo engine, Hyundai's new valve tech is able to continuously change the duration of valve openings to suit driving conditions, which Hyundai ...