If you are not at least moderately informed about how engines work, you may still be aware that they all require water, or antifreeze, in order to function. It is true that some form of coolant is ...

In its purest form, an engine is nothing more than an air pump; it takes in air and then returns it, although in a slightly modified form. Maximizing an engine's ability to process air will also ...

Having a V8 engine does not always guarantee big power. Some, like the early 350-horsepower LS1, are tuned for drivability and usable power delivery, not necessarily outright horsepower performance.

A Pratt & Whitney F135 engine undergoes ground testing at Arnold Air Force Base in Tennessee. (Rick Goodfriend/Air Force) WASHINGTON — The Pentagon is abandoning its efforts to develop a ...

There's an old saying in engine tuning that when adjusting the mixture of your engine you can be too rich a bunch of times, but only too lean once. With that in mind, determining the air-fuel ratio ...

Porsche fans are probably aware that the 993 generation (1994 to 1998) was the last of the air-cooled 911s. What may come as a surprise is that vintage Porsche 911s are not exclusively air-cooled. In ...

Air engines are a common occurrence here on Hackaday. They’re relatively novel and reasonably easy to 3D print without requiring any fluids or supporting machinery. For example, [Tom Stanton] took a ...