Rotary engines (also known as Wankel engines and Wankel rotary engines) are quite different from piston or "reciprocating" engines. One of the distinguishing features is that they don't need valves to ...

Valves are among the most complex components in the internal combustion engine. Many cars nowadays incorporate multiple ...

Last month's "How It Works" story gave you the basics of the four-stroke cycle, describing the motion of the intake and exhaust valves in relation to the piston moving up and down in the cylinder.

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 3.3L V6 twin-turbo in the 2018 Kia Stinger won a 2018 Ward’s Auto 10 Best Engines award. The aluminum engine produces 365 horsepower and 376 lb-ft of torque. The engine has a wide range of useful ...