Hiro Type 94

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.

Type 94 900hp liquid-cooled in-line
Type	"W"-18 cylinder liquid-cooled aircraft engine
National origin	Japan
Manufacturer	Yokosuka Naval Air Arsenal
First run	1933
Developed from	Hiro Type 91

Applications

• Hiro G2H land-based bomber

Specifications (variant)

Data from Mikesh

General characteristics

• 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)

Components

• Cooling system: Liquid

Performance

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