Bore and Stroke: 146 mm (5.8 in.) x 152 mm (6.0 in.) Pratt & Whitney Aircraft's last piston engine was the 28-cylinder R-4360. It was the largest piston engine that the company ever produced. The ...

When you think of a large engine, you probably think of a heavy-duty truck V8. But the engines that actually power our world ...

ST. HELENA — To Mike Nieman, the smell of his large Pratt & Whitney “Wasp Major” radial aircraft engine running is “the smell of victory.” “That smell is of a working engine that made this country ...

Click to open image viewer. Power rating: 2,088 kW (2,800 hp) at 2,700 rpm Dispacement: 71.5 L (4,360 cu in.) Bore and Stroke: 146 mm (5.8 in.) x 152 mm (6.0 in.) The Wasp Major was Pratt & Whitney’s ...