The story of how Honda developed an oval-piston race engine that ultimately failed but still made history along the way.

Everyone generally knows about piston and rotary engines, with many a flamewar having been waged over the pros and cons of ...

Ferrari is exploring a groundbreaking approach to the internal combustion engine, as revealed by a recent European patent filing. Departing from the industry-standard round pistons, this new design ...

For as long as internal combustion engines have existed, pistons have been round. This wasn't necessarily because circular shapes were optimal for performance. It was simply the easiest and most ...

When we here in the modern age think of an “engine,” we are usually thinking of a four-stroke, four-cylinder, gasoline-fed, internal-combustion engine with the valves on the top. But why must that be ...

Engine cylinders can misfire due to problems with the ignition system, the fuel system, air and compression, or sensors and ...

Q:I have a 327 in my '31 Ford that features nearly the same cam and components as the one you referenced recently in Pit Stop (Nov. '12). Since a 1.6:1-ratio rocker arm will push the valve a little ...

Diesel planes aren't just a novelty; they are revolutionizing general aviation fuel costs and range. See why these engines ...

Give it wheels and a steering mechanism, and people will try to power it with anything they can. Visionary (and not-so-visionary) tinkerers and engineers have experimented with everything from steam ...

Piston-driven aircraft are significantly more affordable to purchase than turboprops, with models generally ranging from $100,000 to $1 million. Training and certification for piston planes are less ...