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

It would have been revolutionary: an internal combustion engine without oil. And it might have worked. But lots of real-world issues got in the way.

When it comes to engines, the term "block" can mean a few things. There's big block versus small block and short block vs long block, but at the heart of the matter is the engine itself. The ...