largest engine ever
Trivia: Whatâs the Worldâs Largest 4-Stroke, Spark-ignited Engine? Trivia Thursday: Whatâs the worldâs largest 4-stroke, spark-ignited gas engine in the world? Itâs the 18-cylinder, 25,000-horsepower turbocharged beast from industrial manufacturer Wartsila. Designed for large power plants, the engine stretches over 61 feet long and weighs 396 tons.