A small gap with big importance in the performance and health of an engine - here's everything you need to know.

While many folks view diesel engines as indestructible, they do still need maintenance. Oil changes, fuel filter replacement, and cleaning or changing the air filter are all important items when it ...

Over the past couple of racing seasons, the camshaft specialty companies have created dozens of new profile designs, many of which are over the .800-inch-lift mark. Along with camshaft and cylinder ...

One of the biggest hassles with a solid (mechanical tappet) cam is the need to regularly readjust valve lash, a task usually associated with an aggravating hot oil bath. The best method of setting ...

The typical four-stroke engine is made up of hundreds of parts. These parts are all designed and engineered to work together to make a prescribed amount of power, torque, engine longevity, and other ...

Mechanical lifters were once commonplace in internal combustions engines, but they've been mostly replaced by hydraulic lifters, which offer a lot of benefits.