The mind-bending world of birotary engines - a hybrid of piston and rotary technology that could revolutionize aviation. But ...

To sleeve or to bore your engine block? That's the several-hundred-dollar question (maybe into the thousands) as you ...

There's a new acronym floating around the performance industry—GDI—and it stands for gasoline direct injection. Among domestic production engines that have jumped heavily into the GDI segment are the ...

Everyone generally knows about piston and rotary engines, with many a flamewar having been waged over the pros and cons of each design. The “correct” answer is thus to combine both ...

Learn how a small engine’s gear and piston system operates together, explained through clear visuals and real mechanical ...