2022 Engine Buyer’s Guide Index Introduction Flat Four-Stroke Gasoline Inline and V Four-Stroke Radial and Rotary (Traditional) Rotary (Wankel) Compression Ignition (Diesel & Jet A) Volkswagen Jets & Turboprops Corvair Two-Stroke Electric Hirth The well regarded Hirth line of small engines out of Germany continues mechanically unchanged in 2023. What has changed, as we first … Continue reading Two-Stroke