Time was when a valve job was done with some valve-grinding compound and a vacuum cup on a stick. But no more. Today's high performance engines require the same machining precision in the valves that ...

ONE limitation on the maximum power developed by an internal-combustion engine is the volumetric efficiency, which is a function of so many variables that their interrelation is unfortunately not ...

I’m not sure if any engine built today will still be salvageable 100 years from now. Not to sound like a grump, but so much relies on computers that will surely be obsolete by then. And let’s not get ...

Does your engine need a valve adjustment? It depends on the age, condition and brand of vehicle you’re driving. Due to the popularization of roller-follower valve train designs that reduce friction ...

Modern internal combustion engines — including those that run on diesel fuel — require a lot of special parts and systems to prevent dumping excess emissions into the atmosphere. Not only are those ...

Cam lift and timing can put the valves dangerously close to the piston. We show you how to check the clearance In all but most the mild engine builds, taking extra time to check piston to valve ...

The choke valve in an engine's carburetor, whether it's a Holley carburetor or another brand, helps a cold engine start by restricting some of the airflow into it. When the engine is cold, the choke ...

Automotive engine valves also, known as check valves, are utilized for air injection in vehicles as part of emission control and exhaust gas recirculation systems. Engine valves are employed in a wide ...