The intake manifold distributes air or air/fuel mixtures to the individual cylinders under varying engine speeds, loads, and environmental conditions. Whether the working flow is pure air, air/fuel, ...

A Note from Jim: The stated objective of this story is to introduce you to some notions that may be of imme-diate help to circle track engines operating under rules that allow non-OEM parts. It is ...

Brian Teears explains how fire dynamics has changed as a result of modern construction and, thus, why officers and firefighters must account for this in terms of how heat, air and water interact.

Any experienced firefighter or officer will tell you that firefighting requires dedication to drilling and learning. For good reason, hands-on drills that are performed in the fire station are front ...