Westerbeke W-27 Service Manual

ENGINE/GENERATOR SPECIFICATIONS
A MODELS B MODELS C MODELS
ENGINES
GENERATORS
ENGINES
GENERATORS
-
ENGINES
GENERATORS
60Hz 50Hz
60Hz
50Hz
60Hz 50Hz
38B Four 11.0 BTD 8.3 BTD W-33 WMD 12.5 WMD 9.4
428 Four 12.5 BTDA
9.4 BTDA
W27
WMD 11.0
WMD 8.3
W-33A
12.5 BTD 9.4 8TD
RD80
W27A
11.0 BTD 8.3 BTD
Engine Type
Vertical, inline, 4-cycle, QHV, freshwater-cooled with heat exchanger, diesel engine.
Cylinders
4
Bore & Stroke
2.87 x 3.07 in. (73 x 78 mm)
3.07 x 3.07 in. (78 x 78 mm)
Total Displacement
79.6 cu. in. (1.30 liters)
90.9 cu. in. (1.49 liters)
Combustion Chamber Swirl chamber type
Compression Ratio
23:1
Injection Order 1-3-4-2
Injection Timing Engines: 23° ± 1.5°; Generators: 19° ± 1.5°
Injection Pump
Bosch M type
Injection Nozzle
Throttle type
Governor Centrifugal flyweight type
Fuel Diesel #2 cetane rating 45 or higher
lubrication Forced lubrication (trochoid pump)
Oil Filter Paper-element filter (full flow type) .5 liter capacity
Sump Capacity
5.0 quarts (4.8 liters) not including filter.
Filter requires approximately .5 quarts (.5 liters)
Fresh Water Pump
Centrifugal type
Fresh Water Coolant
Capacity (approximate)
8.0 quarts (7.5 liters)
Raw Water Pump
Positive displacement (Neoprene impeller)
Starter Motor 12 volts - 1.6 kW reduction type
DC Alternator 12 volt - 50 amp - internal voltage regulator
Inclination Angle
15° Continuous (in all directions)
20° Temporary (20 minutes)
Starting Battery
12 volt 300 C.C.A. or greater
Compression Value
Standard 455 psi at 280 rpm (32 kg/cm2)
Minimum 370 psi at 280 rpm (26 kg/cm2)
Overhaul 312 psi at 280 rpm (22 kg/cm2)
Difference between
Cylinders
35.5 psi (2.5 kg/cm
2
)
Engines & Generators
5

Westerbeke W-27 Specifications

General

Brand	Westerbeke
Model	W-27
Category	Engine
Language	English