CylinderHead

Lotus, the company that made its name on "adding lightness" and clever engineering, is at it again. This time, it's the engineering wing of the Group Lotus concern. Lotus's efforts have been directed at banishing seperate exhaust manifolds. We groaned when we heard the news, and assumed it to be a ...

Mechanically actuated valves may soon be a thing of the past. We've made over a century's worth of improvement on the same basic combination of a camshaft, followers (or lifters), a poppet valve and a spring. We've gone from using pushrods and rocker arms to actuate the valvetrain to direct-acting ...