Last month you read about a naturally aspirated Two-Valve engine that gained 28 rwhp without sacrificing any of the car's street manners. The Trick Flow Specialties camshafts made the idle sound ...

Waste lines from a sewage ejector or sump pump use a check valve to stop wastewater from flowing back into the basin. When these valves shut, they can make a thud loud enough to be heard throughout ...

Choked flow in control valves is a subject of serious concern for industrial users. The term is usually associated with destructive process conditions that can damage valve internals or expose ...

Compressible fluid flow through control valves will inevitably cause some form of flow-induced vibration in the fluid system. Identifying the type and cause of the vibration requires detective work.

Over the course of hot rodding, one of the more debatable upgrades has been swapping camshafts--especially in modular engines. Given the Two-Valve's complexity and cost of buying two camshafts, the ...