For typical overhead-valve (OHV), gasoline-fueled, street engines used in cars and light trucks, a 5,500- to 6,000-rpm redline seems to be the target speed for delivering a satisfactory daily-driving ...

Modern diesel engines perform exceptionally well at 1,100 to 1,200 rpm. They deliver peak torque just a few hundred rpm above idle, and peak horsepower somewhere around 1,500 or 1,600 rpm. But what ...

Audi has introduced a groundbreaking new 3.0-liter V6 diesel engine, promising to eliminate turbo lag and offer a smoother driving experience.

Felix Wankel’s rotary engine design is best known for being the heart of Mazda’s beloved RX-series sports cars. Revered for its minuscule size, high power density, unique sound, smooth acceleration, ...

The era of cheap high-revving engines that once screamed up and down America's highways has largely faded as fuel economy and emissions regulations have forced automakers to rethink how modern cars ...

The rocker arm is possibly the third most abused part in your engine. The connecting rods take the cake for the most abuse, followed closely by the piston assembly, but we like to think the rocker ...