We look at why Mazda introduced the three-rotor 20B Wankel rotary engine, and why it only ever saw service in the Cosmo coupe ...

Joshua is an automotive enthusiast who explores every facet of car culture. With a history of over 30 vehicles, his love for Japanese tuner cars shines. Beyond ownership, he dives into every vehicle, ...

Most Japanese performance car enthusiasts are familiar with the 13B twin-rotor engine Mazda equipped the RX-7 and RX-8 with. But unless you've owned and modified an RX of some type, chances are you ...

That alone reduces emissions and increases engine longevity. The rotary valve also means that the blockages caused by conventional poppet valves are not an issue as poppet valves are not needed in ...

Every few weeks I receive word at the office that some tinkering genius has revolutionized the internal-combustion engine. These notices arrive on pages still smelling of Damascus lightning, and ...

Got a burning question or simply need some advice with problems you’ve encountered while wrenching on your current/future projects? Ask our automotive guru Eric Hsu anything—literally, he’s going to ...

The rotary engine, with its egg-like block and triangular rotor, is an oddball even among all the other oddball engine designs—sorry, three-cylinder, twin-turbo, camless Koenigsegg, ya basic. That ...

It’s a dedicated hacker who has the patience to build an engine from scratch. And it’s a borderline obsessed hacker who does it twice. [Meanwhile In the Garage] is of the second ilk, and in the video ...

Many of you have seen the process of making this rotary valve engine with different intake and exhaust system and how I tried to start it. After so many attempts to start this engine, I was ready to ...

Detached engine components, with 1 cardboard box filled with rings, gaskets, and hardware. Type: Rotary, monosoupape (single valve), 9 cylinders, air-cooled Power rating: 75 kW (100 hp) at 1,200 rpm ...