The "battle of the camshaft lifters" has been going on for years. Each design has its proponents. Those in favor of hydraulic cams cite reduced maintenance and claim that equivalently ground ...

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 ...

Ticking noises from a car's engine are rarely welcome, but if your lifters are clicking away in the background, it's worth ...

While enthusiasts can comprehend the fact that the camshaft is responsible for opening and closing the intake and exhaust valves on an LS motor, relating these events to crank position, engine ...

Once upon a time, most car engines used solid or mechanical lifters. But unlike most fairy tales that begin that way, there was no lasting happy ending for them. Hydraulic lifters first appeared in ...

The Cummins 6.7L turbo diesel engine entered its fifth generation in 2019. In addition to improved output of up to 400 horsepower and 1,000 pound-feet of torque, the new engine's valve train featured ...