Before the implementation of hydraulic lifters to keep the engine's valves in proper working order, regular adjustment was required to maintain the critically necessary clearance in the valvetrain.

On engines equipped with hydraulic tappets, zero lash at maximum tappet plunger rise can be determined by rotating the pushrod with your fingertips while slowly turning the lash adjusting nut. The ...

At the end of the day, an internal combustion engine is just an air pump. Proper airflow in and out of the engine is thus critical to efficiency and power. The valves atop (sometimes on the side) of ...

Setting valve lash has nearly become a lost art. Hydraulic lifters are so prevalent and so efficient that many enthusiasts resort to the old way or doing it—engine running, oil spewing everywhere. Let ...

It's a skill that every hot rodder should know by heart. It can also be one of the more confusing aspects of engine assembly. We're talking about setting valves. In this story, we'll show you a very ...

Aaron, a 27-year automotive technician and lifelong car enthusiast, attended Specs Howard School of Media Arts and learned the fundamentals of digital video and editing, shot composition and writing.