Even though valves may appear to be simple parts, they must be precisely made to seal the combustion chamber when closed, and they deal with incredible heat without direct cooling. A rocker arm pushes ...

'Breathe in . . . breathe out. Simple respiration is what keeps us alive, and your engine is no different. On a normally aspirated engine, atmospheric pressure pushes air in through the carb, intake ...

The internal combustion engine lives by some pretty basic principles, some of which include letting air in, compressing said air, and letting air out. An engine's valves come into play during each of ...