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 hunt for efficient engine valve technology can be a never-ending journey into cam timing, various combustion cycles, and lift and duration adjustments. For that reason, some companies believe ...

The choke valve in an engine's carburetor, whether it's a Holley carburetor or another brand, helps a cold engine start by restricting some of the airflow into it. When the engine is cold, the choke ...

An internal combustion engine, at its core, is similar to a giant air pump. To produce power, it sucks in fresh air and fuel, compresses that mixture, and then explodes it, before expelling the burnt ...

You all know Koenigsegg (hopefully), but most of you have probably not heard about its sister company, Freevalve. Well, prepare to be blown away, because they have unveiled a production specification ...

Brian Cooley is CNET's Editor at large and has been with the brand since 1995. He currently focuses on electrification of vehicles but also follows the big trends in smart home, digital healthcare, 5G ...

Your engine is composed of many moving parts and pieces. In order to move through the four stages of internal combustion, all of these bits and bobs are quite necessary. Some engines, however, take ...

General Motors president Mark Reuss says a valve coating issue caused recent Chevrolet engine failures in IndyCar.

You've probably read this line a dozen times: "It's never been easier to make horsepower than right now." While that's true, it also means everything else in the engine is now more highly stressed.

This is a category that is pretty rapidly going away. You'll be hard-pressed to find an overhead valve — also known as a pushrod — engine in anything outside of a General Motors LS/LT V8 or one of ...

Ducati Desmo 250 MX comes with a new 249cc single-cylinder engine and shares its chassis, electronics and the entire architecture with the bigger Desmo450 MX.