The Harkness Hornet was a four-cylinder inline, water-cooled aircraft engine produced in Australia in the 1920s. It used a cylinder bank from a Hispano-Suiza 8 attached to a crankcase of local design.
With a bore of 4.72 in (120 mm) and a stroke of 5.12 in (130 mm), power was 115 hp (86 kW) at 2,000 rpm.
References
Harkness Hornet Wikipedia(Text) CC BY-SA