At first glance, the concept of engine compression is simple enough:It's the ratio of the volume of the combustion chamber and bore when thepiston is at bottom dead center (BDC) versus when it is at ...

Increasing an engine’s compression ratio is a proven way of unlocking extra horsepower, but there’s a point of diminishing returns. The team at Garage 54, the Russian mechanics who built a V16 using ...

We love ourselves a good oddball engine, and tiny, scrappy Mazda certainly must be responsible for more such engine concept patents per market-capitalization dollar than any other. We just discovered ...

The 4-H Small Engine project creates the education and hands-on opportunity for youth to learn all about engines. In this project youth will identify and discover the function of different engine ...

From the archives: Using a stash of parts and an old set of AFR 227 heads, see how this small-block combo got every last bit of power. To celebrate HOT ROD's 75th anniversary, we teamed up with ...

Small-block V8 engines may not be as brawny or powerful as their big-block counterparts, but they completely revolutionized the car industry. However, since the V8 became a staple American power mill, ...

Don Yenko-led projects were often great, but few had the charm of this particular small block V8.

You've probably heard of two- and four-stroke engines, but what are the four strokes of a gasoline engine? And how do they ...

Despite the turbulence Nissan has faced over the past few years, some of its technology is undeniably impressive. Perhaps the crowning jewel of this engineering power is its variable compression ...

Apart from the very curious, not many people ask why diesel engines, compared to gasoline, run higher compression ratios. The argument is reasonably straightforward and starts with fuel ...