The Type 94 900 hp liquid-cooled in-line was a W-18 liquid-cooled aircraft engine. Two Type 94 engines were used to power the Imperial Japanese Navy Hiro G2H land-based bomber in 1933. The Type 94 engine was the eighteen-cylinder version of the Hiro Type 90 600 hp water-cooled W-12/Hiro Type 91 520 hp water-cooled W-12 engines.

• Hiro G2H land-based bomber

Data from Mikesh

• Type: 40° W-18 liquid-cooled piston engine
• Bore: 135mm (5.315 in.)
• Stroke: 160mm (6.2992 in.)
• Displacement: 41.25l (2,515.6 ci)

• Cooling system: Liquid

• Power output: 900–1,180 hp (670–880 kW)

• Mikesh, Robert C. and Abe, Shorzoe. Japanese Aircraft 1910-1941. London:Putnam, 1990. ISBN 0 85177 840 2
• Goodwin, Mike & Starkings, Peter (2017). Japanese Aero-Engines 1910-1945. Sandomierz, Poland: MMPBooks. ISBN 978-83-65281-32-6.

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