Pratt & Whitney R-2800 CB16/17
Engine Specifications



Type: 18 cylinder air cooled
Diameter: 52.80 inches
Length: 81.40 inches
Bore: 5.75 inches
Stroke: 6 inches
Displacement: 2804 cubic inches
Compression Ratio: 6.75 to 1
Dry Weight: single speed 2357 lbs.
two speed 2390 lbs.
Low/High Blower Gear Ratios: 7.29 to 1
Ignition: Scintilla DLN-10 low tension
Impeller Diameter: 12.5 inches
Carburation: Stromberg PR-58E5
Fuel Grade: 100/130 or 108/135 octane CB16
115/145 octane CB17
Performance CB16:

 

Take-off: 2500 hp @ 2800 rpm wet  (low)
                 2200 hp @ 2800 rpm dry  (low)
Normal:   1900 hp @ 2600 rpm
Performance CB17: Take-off: 2500 hp @ 2800 rpm wet  (low)
                 2300 hp @ 2800 rpm dry  (low)
Normal:   1900 hp @ 2600 rpm