L4, a 32cc DOHC four-pot that, according to the StirlingKit website, can spin to 12,000 RPM. This one is further enhanced ...

The Nissan DIG-T R small 3-cylinder engine produces 400 HP and weighs only 88 lbs, with an impressive power-to-weight ratio.

Historically, cylinder deactivation made headlines in the premium car segment, with manufacturers like General Motors and ...