For those of you who may not have gotten today’s Name That Engine, it’s from the Arno XI Hydroplane (1/8 scale kit shown above). That 800kg class three point hydroplane was built by Cantieri Timossi and was powered by a type 375 Ferrari Formula One engine. That 4493.7-cc twelve featured twin superchargers, pulling through a pair of 4-bbl Webers, and featured dual plug (24!) ignition. The methonal-burning engine produced between 550 and 600 bhp and pushed the boat to a record setting 140.74 mph. Read more about the Arno XI here. Image sources: [scaleautoworks.com]