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

In the valvetrain of your typical pushrod engine, the rocker arm is a critical component that also is an excellent tuning device. To properly tune with rocker arms, though, you need to understand how ...

At car shows and cruise nights around the area, organizers and clubs try to come up with events and contests to engage the children that may visit their shows. Taking a child to a car show is ...

Pushrods convert the vertical motion of the lifter from the camshaft lobe into valve movement. A V8 engine takes advantage of that by centrally locating a single camshaft in the middle of the engine ...

Q I own a '99 Chevy Lumina with a 3.1-liter V6. This weekend I got a flashing check-engine light with a severe misfire. I took the vehicle to a shop, which told me I had two rocker arms blown right ...

There was once a time when Desmodromic valve technology was cutting edge and a necessary competitive advantage for Ducati in racing. The Desmo head doesn't use a valve spring to return the valve to ...

The valve train is probably one of the most complex and critical assemblies in a modern automobile engine. Its operation directly impacts engine efficiency and emissions. Engineers with the General ...

A developer of fluid control systems for the medical industry has released microfluidic rocker valves. The valves come in sizes of 10, 16, and 22 mm and in two- and three-way versions. Their ...