Westerbeke 20B TWO Installation Manual download pdf (Page 63)

Engine

Type

Governor

Valve

Mechanism

Combustion

Chamber

Bore

&

Stroke

Piston

Displacement

Firing

Order

Direction

of

Rotation

Maximum

Torque

Compression

Ratio

Compression

Pressure

Valve

Seat

Angle

Valve

Clearance

(engine

cold)

Dimensions

Inclination

Dry

Weight

Fuel

Consumption

Idle

Speed

Cruise

Speed

208

TWO

ENGINE

SPECIFICATIONS

SPECIFICATIONS

Diesel,

four-cycle,

two-cylinder,

fresh

water-

cooled,

vertical

in-line.

208/Two

-18

Hp@

3600

rpm

maximum

Mechanical,

centrifugal

weight

type

Overhead

Swirl

chamber

type

2.99

x

2.76

inches

(76

x

70

mm)

38.75

cubic

inches

(0.635

liters)

1 - 2

Clockwise,

when

viewed

from

the

front.

30

lb-ft

(4.15

kg-m)

at

2200

rpm

23:1

398

psi

(28

kg/em')

at

280

rpm

Intake

45°

Exhaust

45o

Intake

0.010

incl1es

(0.25)

Exhaust

0.010

inches

(0.25)

Height:

19.75

(501.65)

Width:

16.00

inches

(406.40)

Length:

25.87

inches

(657.10)

Continuous

14°

Temporary

25°

(not

to

exceed

30

min.)

228

lbs

(1

03.4

kgs)

1.1

us

gph

(4.1

lph)

at

3600

rpm

(approximate)

1000-1200

rpm

2500

-

3000

rpm

LUBRICATION

SYSTEM

General

Operating

Oil

Pressure

(engine

hot)

Oil

Grade

Sump

Capacity

(including

filter)

General

Fuel

Injection

Pump

Engine

Timing

(Spill

Timing)

Injection

Pressure

Nozzle

Air

cleaner

Air

Flow

(engine

combustion)

Lift

Pump

(PN

#039275)

General

Pressure

type

by

Trochoid

pump,

gear-driven,

with

external

pressure

valve

relief

15-

45

psi

(1.0-

3.1

kg/em')

API

Specification

CF,

CG-4,

CH-4

or

Cl-4

SAE

15W-40

(all

season)

3.0

U.S.

qts

(2.8

liters)

FUEL

SYSTEM

Open

flow,

self-bleeding,

manual

priming

No.

2

diesel

(cetane

rating

of

45

or

higher)

In-line

plunger

type

(BOSCH)

19°

±

1°

BTDC

Static

1991

psi

(140

kg/cm2)

Throttle

type

Plastic

screen

type-cleanable

40.6

cfm

(1.0

cmm)

12

volt

DC

lift

capacity

of

5'

(1.5

mm)

wet

COOLING

SYSTEM

Fresh

water-cooled

block,

thermostatically-

controlled

with

heat

exchanger

170-190° F (77-

88°

c)

Centrifugal

type,

metal

impeller,

belt-driven

ELECTRICAL

SYSTEM

Operating

Temperature

Fresh

Water

Pump

(PN#

037015)

Raw

Water

Pump

(PN#

033636)

Positive

displacement,

rubber

impeller,

mechanically-driven

Starting

Battery

Sattel)'

Capacity

Starting

Aid

Starter

Motor

DC

No-Load

Current

Cold

Cranking

Current

Alternator

Regulator

12

Volt,

(-)

negative

ground

600

-

800

CCA

(Cold

Cranking

Amps)

Glow

plugs,

sheathed

type

12

Volt,

1.2

Kw,

solenoid,

actuator

shift

1

00

Amps

at

11.5

Volts

(3000

rpm,

min)

125

Amps

at

10

Volts

(805

rpm,

min)

12

Volt

DC,

50

Amps

Internal

regulator,

built

into

alternator

Raw

Water

Flow

(measured

before

discharge

into

exhaust

elbow)

System

Capacity

(Fresh

Water)

11.1

US

gmp

(42

lpm)

at

3600

rpm-approx.

2.9

US

qts

(2.7

liters)

TRANSMISSIONS

JS

Model

PRM

80

2.47:1

reduction

2.50:1

reduction

BW7

2.47:1

reduction

Propeller

Rotation

Right

hand

turning

Engines & Generators

55

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