Variable valve timing has been available in cars for almost half a century, first appearing in the Alfa Romeo Spider as far ...

In order to set a stage for what follows, let's first revisit some of the fundamentals involved in how valve timing relates to power output. And to further clarify how "power" is defined in the ...

This video follows a classic Ford coupe receiving a full Flathead V8 repair after a fiber timing gear failure. The breakdown ...

To celebrate HOT ROD's 75th anniversary, we teamed up with CASTROL GTX to bring you some of the stories that exemplify the core of what HOT ROD is and reflect the brand's influence on America's car ...

Mihai has even branched beyond the usual confines of an automotive writer from time to time, however, his heart is still close to anything car-related. He's most at home retelling the story of some ...

Valve overlap—that crucial interval when both the intake and exhaust valves are open, expressed in degrees of crankshaft rotation—is typically a fixed parameter and always a compromise. For example, ...

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 ...

Engines are complex bits of machinery. At their core level, yes, it's easy to understand what is happening. Air and fuel enter the engine where they are ignited and combustion occurs resulting in ...

When you check out the features of a new car, you’ll probably be bombarded with glowing words about its engine’s “advanced valvetrain technology.” How did this happen? They don’t shower us with ...

Ford’s 5.4-liter Triton V8 has spent years being treated like a mechanical punchline. Mention the engine around longtime ...

From modest inline-fours to modern twin-turbocharged V6s and compact inline-threes, the Ford Motor Company has engineered ...

Maintain a 2-Valve Triton properly, repair its spark plug threads correctly, and keep clean oil flowing through it, and this ...