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.

Lots of displacement, more compression, and a ton of valve lift used to be the recipe for a typical professional-level drag-race motor. Today, this same description could just as easily be a serious ...

The engines of yesteryear were pretty simple, with tappets clackity-clacking away on cam lobes, opening valves, and making a ruckus while doing it. Mechanical lifters were adequate for valve operation ...

Q:I have a 2006 V-6 4Runner that now has more than 105,000 miles. Should I have the valves adjusted? Everyone I talk to says not to bother, and that it costs too much. A:Toyota recommends a valve ...

Adjusting the valves on a Triumph Thunderbird Sport, Trophy, Daytona, Trident, Sprint, Tiger, Speed Triple, Legend or Adventurer Motorcycle. My Triumph Thunderbird Sport had about 9,000 miles on it ...

Mercedes-Benz has been granted a patent for an internal combustion engine that includes a crankshaft, camshaft, cylinder, piston, gas exchange valve, valve clearance compensation device, and a control ...