In a conventional application, there are three rings per piston. The top ring is called the compression ring. Its purpose is to seal the combustion gas pressure, transfer heat from the piston to the ...

In an effort to increase the basic understanding of automobile technology for those new to the hot rod world or those who have been involved for a while but don't have a good foundation of knowledge.

Today, we explore the Birotary Engine, a unique creation that merges the features of piston and rotary engines. This video ...

Pistons are an engine-building element we like to brag about, but you won't catch many of us boasting about having cast pistons. Cast pistons are for wimps. Many of us like to talk up hypereutectic ...

You've heard that pistons have rings, but have you ever wondered why there are three? Here's how piston rings work together to keep your engine running.

There's more to piston shapes than you might think. Whether it's domed, flat, or dished, all pistons have their fair share of pros and cons when it comes to performance and efficiency. Understand that ...

The team at Garage 54 replace aluminum pistons inside of an engine with custom-made plastic pistons. The engine, surprisingly, runs for longer than it has any right to run. Garage 54 specializes in ...

Automotive history is full of dead ends that eventually get lost to time. Seventy years ago, the free-piston engine was ...