Mr. Pretel built this engine from a standard Wall Wizard casting kit, but modified the cylinders for water cooling instead of air. It is designed to burn gasoline on spark ignition and the crankcase holds oil for splash lubrication; rockers and push rod ends must be manually lubricated before each run. The intakes, exhaust pipes, flywheel, and numerous other parts are chrome plated for appearance and protection from water in marine applications.
Wall Wizard Water-Cooled 4-Cycle Model Boat Engine
