Westerbeke 4.5 BCG - BCG Generator Specifications; Engine Type and Governor; Fuel System Specifications; Cooling System Specifications

Engine Type
Governor
Combustion Chamber
Bore & Stroke
Piston Displacement
Firing Order
Direction of Rotation
Maximum Torque (at 1800 rpm)
Compression Ratio
BCG GENERATOR SPECIFICATIONS
Gasoline, four-cycle, three-cyl:nder, fresh water-cooled
Vertical, In-line overhead valve mechanism
(8 bhp at 1800 rpm, maximum). FUEL SYSTEM
Hoof, llyball type, 5% speed regulation. General
Multi-sphere type. Fuel
2.44 x 2.38 inches (92.Q .x.69,5 mm)
2.62 x 3.19" ( 66.6 x 81mm >A-MODEL. Fuel Pump
33.4 cubic inches (.547 llter) Fuel Screens (on engine)
51.6 cubic inches ( 0.846 liter J A-MODEL
1-2-3 Air cleaner
·Clockwise, when viewed from the front
Air Row (engine combustion)
13.5 lbf-ft
COOLING SYSTEM
10.0:t 9.5:1 (A·MODEL)
General
Conventional carburetor type with fuel pump.
Regular or unleaded gasoline With an octane rating
of 89 or higher.
12-volt DC; lift capacity 5 ft (1.5 m)
Reusable screen type Oocated at inlet to cartrurator).
Metal scnien type - cleanable.
18 cfm (0.509 cmm) at 1800 rpm.
Fresh water-cooled bloek,
thermoslatlcally-controlled
with a heat exchanger.
Compression Pressure 19& 1 ps~{11.0 kgf.pm
2
)
at 400 rpm(213.3psiI15,0 kg( cm;!)
(Limit Qf difference between cylinders (21psi ( 1.5kglcmi'
1
]) (A-MODEL)
130 - 150"F (55 - 66"C )
Valve Timing Intake Opens 32" BTDC <2l A-MODEL ) Operating Temperature
Intake Closes 52" ABDC ( 62" A-MODEL)
Centrifugal type, belt-driven, 1.13:1.
Valve Seat Angle
Valve Clearance
(engine warm)
Engine Speed
Dimensions
Dry Weight
Fuel Consumption
Inclination
INTAKE
SYSTEM
Carburetor (STD type)
IGNmON SYSTEM
General
OistribiJtor
Spark Plug Thread Size
Spark Plug Type
Exhaust Opens 56" BBDC ( 62°Ji-MODEL}.
Exhaust Closes 28° ATDC ( 28° M1/jODEL}
lntake45"
Exhaust 45"
Intake 0.010 inches (0.25 mm)
F.xhaust 0.012 inches (0.30 mm)
1800 rpm 60 hertz.
· 1500 rpm 50 hertz.
Length: 26.50 inches (673.1 mm)
· Width:· 1s.:!4 inches (465:8 min)
Height: 23.44 Inches (595.4mm)
Approx. 309 lbs (140. i kgs)
0.8 U.S. gph {3.02 lph) at full rated output (approximate).
Continuous
14°
Temporary 20• (not to exceed 20 min.)
Manual with butterlly Shaped valve, single barrel
with U.S.C.G. appr&Ved !lame arrester.
Battery ignition, 12-volts (negative ground),
distributor
with points, ignition coil and spark
plugs. . .
Conventional, contact-point type.
14x1.25 mm_pltch (0.55 x 0.05 in.)
Westefbeke part number 33805
(Pdways Identify the generator model
when ordering parts. See page 5.)
Fresh Water Pump
Sea Water Pump
Sea Water Row, at 1800 rpm
(measured before discharging
into
exhaust elbow)
System Capacity (fresh water)
LUBRICATION SYSTEM
General
OD Filter
Positive displacement, rubber impeller, belt-driven.
3.75-4.0 U.S. gl)m (14.19-15.141pm)
4.2 U.S. qts (3.9 liters)
Fully-Force fed type by Trochold pump.
crankshaft-drlVen.
FuU llow, papar element, spin-on type.
Sump Capacity (not including fUter) 3.0 qts (2.8 liters)
Operating OD Pressure (engine hot) 50 - 70 psi (3.5 • 4.9 kg/cm2)
OU Grade
ELEcTiuCAL SYSTEM
Starting Battery
Battery capacity
DC Battery Charger
Starter
DC No-Load Current
DC Cranking Current
AP/ category SJ,SN, SL, SM, or better.
SAE 30W or 10W-30
12-volt, 24 A-H, (-) negative grouiid
(recommended) (28 A-H in cold areas).
400 to 600 CCA RATED
Integral controller tS:.volt. 10 amp
Oocated in the AC alternator).
12-volt, 1.2 KW, Magnlito engaging type.
ro amp(max.) at 11.5 volts.
100 -125 amps (engine cold).
1-W:IWBSTSRBEKE
(Engines & Generators
42