
WESTERBEKE FOUR-154
SPECIFICATIONS
r----
".~-
-....,
Type:
Indirect
injection
, naturally aspirated, 4
cycle
, 4
eylin·
der
in line, fresh
water
cooled marine diesel engine.
Displacement
: 154.2 cu. in. Bore 3.
50"
(89 mm), stroke 4.00"
(101.6 mm).
Power: 53
hp
at 2500 rpm. (Certified rating
in
accordance
with
BS
AU
141
-see power curve.)
Compression Ratio: 19.5:1.
Weight
: 710 Ibs. basic engine -add
gear
weight below for
lOR we
igh
ts.
Cyli
nder
Block
: Cast iron monobloc, ribbed for rigidity,
with
three replaceable main bearings.
Cylinder
Head: Cast iron
with
renewable valve guides.
Ricardo Comet
des
ign combustion chambers.
Crankcase:
Nylon-coated steel for longer life.
Crankshaft: Special alloy steel
forging
,
dynamically
and
statically balanced.
Camshaft: Steel
forging
with integral cams supported
by
three main bearings.
Pistons: Anodized aluminum alloy with solid skirt.
Connecting
Rods: "I" section
heaHreated
alloy
steel.
Fuel System: Distributor-type injection pump
with
mechanical
governor. Fuel
lift
pump. hand primer and
single
stage fuel
filter.
Injecto
rs fitted with R
icardo
Pintaux-type nozzles.
Lubricat
ion
System: Full pressure wet sump system with
engine-
driven
gear
pump. Full flow lube oil filter with spin-on
element
and efficient oil
coo
ler.
Cool
i
ng
System: Fresh water
cooling
by engine-mounted
heat
exchanger
,
rubber
impeller
raw water pump. Exhaust mani-
fold fresh water cooled for longer life.
Electrical
System:
12
volt starter motor.
12
volt. 55 ampere
alternator
. Pre-wiring is available.
Transmissions: Manual; type
SA
.
direct
drive
471bs.
1.5:1
,2:
1 and 2.5:1 611bs.
Hydraulic
; Paragon or Warner, direct
drive
1001bs.
1.5:1,
2:1
,2.5:1 and
3:1
1501bs.
Vee
drive;
manual
or
hydraulic
. 1:1, 1.3:1. 1.67:1 and 2.1:1 -
add 37 Ibs. to direct
drive
weight above.
Rotation
: Most gears turn a left-hand propeller. (See
price
lis!.)
Installation
Data:
Mounting
centers,
20"
or
22Vl". Installa-
tion angle, 150 maximum. Seawater pump inlet Vz" IPS. Fuel
inlet
and fuel return
connections
Va"
IPS. Oil pressure con-
nection
Va"
IPS. Water temperature
connection
V
l"
IPS.
Exhaust
2"
IPS.
I
/'
~I
'"
:
I
~
v
~
Y1
~
if
I
~
J
.....
V
, I
---
.....
POWER CURVE: (A)
BS
AU
141
is
an
up-to-date and meaning-
lui
engine
rating system used in response to
envir
onmental
requirements and
th
e desire to
be
factual. Engines are rated
for
maximum horsepower and rpm with all necessa
ry
auxiliaries
working. They must
comply
wi
th
modern standards
01
noise
level, exhaust emissions and fuel consumption. Curve (B) shows
the power available lor intermittent use. Curve (
C)
shows the
power available
for
continuous
use. Curve
(D)
is the
propelle
r
law curv
e.
Standard
Equipment:
Fresh
water
cooling
system
with
surge
tank and exhaust manifold
combined;
raw water pump and
heat
exchanger
mounted on engine; 12 volt, 55
amp
alter-
nator with transistor regulator; adjustable flexible mounts on
20"
or
22
Vz
" centers; propeller shaft
coupling
; manual or
hydraulic reverse gear; full
fl
ow lube oil
filter
with spin-on
element;
seconda
ry fuel filter; fuel pump hand pr
imer;
flexi-
ble
hoses for fuel i
nlet
and return; key switch panel; su
mp
pump and
ho
se: threaded exhaust flange; instruction manual.
Optional
Equipment:
All
electric
instrument
panel
with
ta-
chometer, hour meter. ammeter, water temperature and oil
pressure gauges; engine
pre-wir
i
ng
; engine alarm system;
high
capacity
primary fuel filter; flexible shaft coup
ling;
re-
mote
lube
oil
cooler
and
filter
; extra
crankshaft
pulleys; keel
cooling;
spare parts kits.
THE WESTERBEKE DIESEL
He
re, at last, is power for that broad range of sailboats that
need more than 40 hp but less than
70
and that
certainly
don't want the extra size, and weight
of
the larger engine.
At boat shows, people often tell us that they cou
ldn
't afford a
diesel.
Actually
, thoughtful owners are finding
just
the oppo-
site. Due
to
higher
internal pressures, a diesel engine must
be
built
better and
stronger
than a gasoline engine.
he
nce
it
costs more. But better
built
means more
dependable
(fewer
expensive service
calls
and
major
overhauls) and longer
lasting (less
chance
of having to
buy
a new one). The fuel
it
uses costs less than gasoline and gives more
power
per
gal·
Ion. So although the engine may be larger, tankage may be
smaller. There is less
fi
re hazard with diesel fuel.
At
best
this
ma
y lower your insurance rates. At worst
it
could save
your
life. Finally when you come
to
sell
your
boat,
it
's always
worth more with a Westerbeke.
In the past, boat
builders
made
do
by
build
i
ng
their
boat
to
fit the engine available.
Now
, with a
complete
line of de-
pendable
We
s
lerbeke
diesels from 5
hp
to
115 hp, the
builde
r
can put in
just
enough engine for the boat,
eliminating
un-
needed
power
, size and weight.
Westerbeke diesels are
sold
and
serviced
by
Westerbeke dis
tr
i
butors
in aff
maior
port
ci
ties in the
United
States.
J.
H.
WESTERBEKE
CORP.
LEDIN
DRIVE,
AVON
INDUS
TRIAL
PARK,
AVON
,
MASS
.
02322
CABLE
:
WESTCORP
,
AVON
TELEX
:
92-4444
(
(
19
0
18
Printed in U.S.A.