The ZDZ 420B4-J is a significantly improved former version of the ZDZ 420B4 engine. It is a two-stroke, four-cylinder flat model gas engine with 420ccm displacement. It features new cylinders for higher performance, better cooling, and a new & improved crankcase design.
This engine and the ignition are fully integrated into one “unit” which is easy to install. The user can be sure that installation of the ignition is done properly with no worries about where to install it, temperature, or vibration interference.
This engine is suitable for giant scale airplane models with weight over 40kg and wingspan over 4 meters.