Westerbeke W-58 User manual

a lightweight , lOW
58hpmarineengine
FROM THE WESTERBEKE FAI
OFDEPENDABI-E DIESFJS
Select JOur po.". paelc."./tofn
more IItan '-nfrall UHJter cooled
..... ne. ....... ng/tofn 1010 J2...".
BuIlt.., die fJf'O/essionaI./or peafor-
mance, durability, an" econonlfCGI
o".."",on.
• NeW self priming fUel system With elec:tllc shut Off
• Hk3padty heat exchanger WIth removable end capsandZinc electl Ode
• Fresh water cooled manlfQkl With frOnt or rear exhauSt openfnOS and a
remote recoverv tank for VIsIble coolantmonItOrIng.
• Heavy flywheel, precision balanced, fOr that steam engine efrect
• TUned air Intake silencer fOr lower noise level
E NGINES: 142, 13, 21, 27, 33, 46, 52,

WESTERBEKE'S 58 HP, FOUR CYLINDER, MARINE DIESEL
CONSTRUCTION
1. Cy lind er Head: The special cast- ir on cylind er head is pr ec isio n-
cast by the shell moulding pr ocess and then so ft-gas·n itrid ed for
increased
durability .The intake and exhaust por ts are arranged f or
cross fl ow to rai se the intake and ex haust e ffi cie ncy. Th e swi rl typ e
precombustion chamber is u se d.
2. Cylinder Block: Weight r ed uction achieved by technologies of
thin wall ductile
cas t iron and half skirt. The water rail is designed
to pr ovide uniform distribution of coolant to the cylinder head.
The cylinder liner is of the dry type of high-phosphorus cast iron.
whi ch is given special honing to provide quick seatin g. and good oil
retentio
n. thus increasing we ar r es istan ce.
:~. Crank Mechanism: The forged crankshaft is support ed by 5
beari n ~s. The au tolhermatic piston of Lo-Ex alloy ha sa sh eet metal
cast in its skirt so as to hold the thermal expansion of the piston.
thereby making il possible 10 lessen the piston cl
ea rance. The pis-
Ion pin
is offset by O. 5mm . All these improvement s ensure quiet
operation from low to high speeds.
4. Valve Mechanism:O.H.V. Both intake and exhaust valves are of
rotation type for higher
durability of the valve seat. Co upled with a
friction gear with one
ext ra tooth. the timing gear train is intended
to eliminate the backlash at the time of
gea r engagement to reduce
gear noi
se .
5. Intake Sys tem: The intake manifold is of independent branch
type for higher intake efficiency.
6. Fuel System: The fuel injection pump
is a Bosch VE type dist rib -
utor pump . small in size and light in weight. contr ib uting toward
noise reduction. Since
fu el ca n be cut with the solenoid valve built
in the pump. the engine operation can be stopped by
turning off the
ignition switch.
SPECIFICATIONS
Numb er of Cylinders& Arrangement . .• . . . . . . . .. 4 in-line
Cylinder Bore & St roke . . . . . . . . . .......... 3.5 in. x 4 in.
Displacement
.......................... _ .......... 1 54 in.
Compression Ratio . . . . . . . . _ .................... 21.0
Combustion Chamber .... . •.• .. ••............... Swirl Type
Firing Order .......... _ ..................... 1- 3-4 -2
Injection Pump . . . . . . . . . . . • •. . . . .Bosch Distributor Type
Governor . . . . . . .
.... Mechanical (Bu ilt in Pump)
Lubrication Method . . . . . ........... Pressure Feed Type
Cool in g Me th od . . . . . . . . . . . . . .. Fresh Water Cooled
Auxil i ary Starter . . . . . . . . . . . . ............ Glow Plug
Electrical System Vo lt age ... . ................... 12 Volts
Dry Weight
of Engine (w/Trans.) ................. 692Ibs.
PowerTake-off .............. . ... Various Crankshaft Pulleys
PERfORMANCE CURVE
132 ~
111 ~
~IIOIM~TII!' t:
H'+H-++-t1..- .. H-t----1 ~ i(
EN GI NES PEED "PM
PERFORMANCE DATA
Maximum Torque .. .. . .. .... . .... . .... 117 .9 Ib . ft J2200 r .pm.
One Hour Rated Power O utput
...... 44.8 HP /2000 r.pm ., 552 HP /2500 r. pm ., 62 HP /3000 r.p.m.
Co ntinuous Rated Power O utput
...... 38 HP /2000 r. pm .,46.9 HP /2500 r.p.m.,52.8 HP /3000 r. pm .
Maximum Power O
utput ................. . .. 69 HP /3600 r.pm .
Typi
ca l Fuel Consumption Rate ............... 063 US gal/ HP / hr
Typ ical Fuel Cons umpt ion Rate at 2500 RPM
wh en wh ee led to tum 3000 RPM ............... 1.9 US gal/hr
Ca pa city of Lubricant( sump ) ......................... 6.3 ql.
Capacity of Coolant (e ngine only) ................. . ... 10.5 qt.
Perfonnance is based on JIS standard a tm osphe ric condition
( atmospheric pr ess ur e 760mm Hg , te mp 20 ·C, humidity 65 %)
witho ut coo lin g fan.
STANDARD EQUIPMENT
Alann, low oil pressure, high water te mperatur e (
Cl ut ch and 2:1 R ed u ction Gear( R.H . Propeller)
Adjustable flex isolator engine mo
unts ( 18 "on cen tr e)
Fresh wat er cooling system
Coolant RecoveryTank
12
vo lt 55 ampere alternator
Throttle, and shift con tr ol bra ckets
Glow plug
cold weather startingaid
Engine pr e-w ired at the fact ory wi th a single 8 pin connector
Ope rat o rs manual
Water Inj ected Exhaust Elbow
Lube O
il Drain H ose
Flowcontroller-for easy co nnection of domestic hot water heater
OPTIONAL EQUIPMENT
Remote mounting lu be oil filter
Vario us accessory front pulleys
Hydro- Hu sh Muffl er
Sea Water S tr a in er
Alternator Outp ut Spli tt er
©
J.., ( 1 ') (,,:.\
.r .t .. - . ..
. '. . ({."''l' ti
WL'JT4 ~ IU ! . • ' /
Five Function Electric Instrument Pan el incl udin g Ho ur Meter
and Tachometer
A wide variety of Manual and Hydraulic Transmissions are
av
ailab le in var io us Reduction Gears and Vee Drives.
Front exha ust outle t for vee driv e appl icat ions
Primary90 amp . alternator
18/20/22 -1 /2" Mounting cente rs
CALL YOUR WESTERBEKE REPRESENTATIVE
[ ]
OR CONTACT THE .. .
J. H. WESTERBEKE CORP.
Mar,ne 2/ 84 /5M
Avon Indu strial Park, Avon , MA 02322, [phone]
Cable : Westeorp, Avon , Telex: 92 - 4444

a lightweight, low
58hpmarineengine
FROM THE WESTERBEKE r,.. ..
OF DEPENDABLE DIESELS
Select,.,.. ,. .... pae lc "../ro-
...,.".. _/Ie ...... «:00,. "
........ ........ Jio. J310 J20.." .
lJuIlt",tltePl'tiw. lonaItJforfMIfor- ne w ... I .... ·' . . .. _1 , .... _ ... , . , -"- m 4l4 .
.. . _e . .. ...... "" . and eeonom.col
OJII. tOtloDn.
• NeW self primi ng fuel system with electric shut off
• Hk:apaclty heat exchanger with removable end caps and zinc electrode
• FreSh water COOled manIfOld with front or rear exhaust openings and a
remote
recovery tank fOr visible coolant monitOring.
• Heavy flywheel , precision balanced , fOr that steam engine effect
• Tuned air Intake silencer fOr lower noise level
ENGIN ES: 13 ,21, 27 , 30 , 33 , 40 , SO , 52, : 70, SO , 100, 120
" .., . . . ....

WESTERBEKE'S NEW 58 HP, FOUR CYLINDER, MARINE DIESEL
CONSTRUCTION
I. Cylinder Head: The special cas t·iron cylinder head is precision.
cas t by the shell moulding process and then soft-gas-nitrided for
increased durability.The intakeand exhaust portsare arranged for
crossflow to raise
th e intake and ~xhaust efficiency.The swirllype
precombustioll ch.llnher is used .
2. Cy lind er Block: Weighl reduction achieved by technologies of
thin wall ductile
cas t iron and half skirt. The water rail is designed
to pTovide uniform distribution of coolant to the cylinder head.
The cylinder liner is of the dry type of high-phosphorus c ast iron.
which is given special honing 10 pr ovide quick sea ling. and gnnd nil
retention. thus inneasing we ar r es istan ce.
:1 . Crank M ec hanism: The forged crankshaft is support ed by 5
bearings. The auto
th crmatic piston of Lo·Ex alloy has a she et metal
cas t in its skirt so as to hold th e th ermal expansion of the piston.
thereby making it possible
to lessen the piston clearan ce. The pis-
ton pin is offset by 0.5mm. All th ese improvements ensure quiet
operation from low
to high sp ee d s.
4. Valve M ec hanism: O.H.V. Both intake and exhaust valvesare of
rotation type for higher durability of th e va l ve seal. Co upl ed \ 'I .'i lh it
friction gear with one ext ra looth. the timing gear train isintended
to
el iminate the backlash at the time of gear engagement to redu ('e
gear noise.
5. Intake System: The intake manifold is of independent branch
type for higher intake efficiency.
6. Fuel System:The fuel injection pump
is (I Bosch VE type distrib-
ut or pump. small in size and light in weight. ('ontributing toward
noise reduction. Sin('c
fu el can be cut with the solenoid valve built
in the pump.
th e engineoperation can be stopp ed by turning off the
ignition switch.
SPECIFICATIONS
Numberof Cylinders & Arrangement ..... 4 in-line
Cy linder Bore & Stroke ....... _. . . .3.5 in. x 4 in.
Displa
ce ment .... .......... . 154 in.
Compression Ratio . . . . . . . . . . . . . . . ...... 21.0
Co mbustion Chamber . . . . . . . • . . . . . . . . . . . . . wirl Typ e
FiringOrder
............•......................... 1-3·4·2
Injection Pump .............•. . ....... Bos ch DistributorType
Governor
.............. . . . ....... M ec hanical (Built in Pump)
Lubricalion Method . . . . . . . . . . . . . .
.... Pressure Feed Type
CoolingMethod . . . . . . . . . . . . . . . ... Fresh Water Cool ed
Auxiliary Starter . . . . . . . . . . ....... •........ .... Glow Plug
Electri
ca l System Voltage .... . ................ 12 Volts
Dry Weight of Engine (w/Trans .) ............... 692lbs.
PowerTake -o ff .. ........... .. VariousCrankshaft Pulleys
PERFORMANCE CURVE
~
CON;;~;;~
J t I
PERFORMANCE DATA
Maximum Torque .. ................... 117.9Ib.ft J2 200 r.pm.
One H our Rated Power Output
...... 44.8 HP /2 000 r.p.m., 55.2 HP /2 500 r.pIn ., 62 HP /3 000 r.pm .
Continuous Rated Power Output
... ... 38 HP /2 000 r.p.m., 46.9 HP /2500 r.p.m., 52.8 HP /3 000 r.p.m.
Maximum PowerOutput
.................... 69 HP /3 600 r.pm.
Typical Fuel Consumption Rate ............... 063 US gal/HP/hr
Typical Fuel Consumption Rate at 2500 RPM
when wheeled to tum 3000 RPM ............... 1 .9 US gal/hr
Capacity of Lubricant(sump) .......... ......... ...... 6.3 qt.
Capacity of Coolant (engine only ) ..................... 10.5 qt.
Performance is based on JIS standard atmospheric condition
(atmosp heric pressure 760mm Hg, temp 20 C, humidity 65 '\,)
without cooling fan.
STANDARD EQUIPMENT
Alarm , low oil pressure. high water temperature (
Clutch and 2:1 Reduction Gear ( R.H. Propeller)
Adjustable flex isolatorengine mounts(18 ·· on centre)
Fresh water coo ling system
Coolant Recovery Tank
12 volt 55 ampere alternator
Throttle, and s hift control brackets
Glow plug cold weather starting aid
Engine pre-wired at the factory with a single 8 pin co nn ector
Operators manual
Water Injected Exhaust Elbow
Lube Oil Drain Ho
se
Flowcontroller-for easy connection of domestic hot water heater
OPTIONAL EQUIPME T
Remote mounting lube oil filter
Various accessory front pulleys
Hydro-Hush Muffler
Sea WaterStrainer
Alternator Output Splitter
Five Function Electric Instrument Panel including Hour Meter
and Tachometer
A wide variety of Manual and Hydraulic Transmissions are
available
in various Reduction Gears and Vee Drives.
Front exhaust outlet for vee drive applications
Primary 90 amp. alternator
18/20/22-1/2" Mounting ce nt e rs
CALL YOUR WESTERBEKE REPRESENTATIVE
[ 1
OR CONTACT THE ...
J. H. WESTERBEKE CORP.
Manne NLP 6/82 7,500PTlrlled 11'1 USA
Avon Indu strial Park, Avon , MA 02322, (617) 588 · 7700
Cable : Westcorp, Avon, Telex: 92·4444

...... e~ ..... lIIbIllllp.
operG"on.
• NeW self priming fUel ~ WIU'I el etb Ie $hcI!COl
• tkapaclty heat ~ WIth removatIIe end. ! . ' ~1
• FreSh water COOled manlfOlcJ \tfth trr'II i'It
remote recoverv tank fOr VJSIbIe codJIII
r_.;_."""!'I'X
• HeaVy flYWheel . preclSlon bitanCed. fOr tffaj ~ stI _ : .
• TUned air IntakesilenCer fOr IOMIr noISe ....

WESTERBEKE'S NEW 58 HP. FOUR CYLINDER, MARINE DIESEL
~ __ r= '- ~~ ~ rrt ~ ' ~ ''' ~ i _~~F- n ; ~ _ I
PER FORMA NCE CU R VE
1:t j;;j; ~~E~ r==1 I12 ~
t- m ~
!
f-+ l' i~ :h l:l :- ! .,.. ! i; !· T ~ ! ,;. ll ~r--'· ~-1 1 : ~
$IOOIfI N WITH OI'TIOI....,l WESTERBEKE W'
58
series 18
~ --- 20 . 2S' ---- ";
10 .• 7- -+ _--:- __ --- 30 . 13 ------ ----1
•• ".GQN "YD".UlIC Dilli e' D'''''l ," ANS/II 'SSIOH
CONSTRUCTI ON
I. Cylinder Head: Th e special cast-iron cylinder head is precisio n-
c ast by the shell moulding proc es s and th en so fl- ga s-nilrided for
incre
ased durability.The intake and exhaust portsare arranged for
cro
ss flow to rai se th e intake and exhaust efficiency. The s wirll ype
precombustion chamber is used.
2. Cy linder Bl oc k: Weight reduction achieved by t ec hnolo gi es of
thin wall ductile cast
ir on and half skirt. The water rail is designed
to provide uniform d is tribution of coolant to th e ry lin de r he ad .
The cylinder liner is of the dr y type of high-ph os phorus cast ir on,
which isgi
ve n special honing to providequick sea tin g, and good oil
retention, thus increas
in g wear r es istan ce.
3, Crank M ec hanism: The forged crankshaft is supported by 5
bearin
gs. The aulo th ermatic piston of L o- Ex alloy ha sa sh ee t metal
cast in its skirt
so as to hold th e th ermal expa ns ion of th e piston,
th ereby making it p oss ible to l esse n th e pi ston cl earan ce. The p is-
ton pin is off se t by O.Smm. All th ese i mpr ovements ensure qu ie t
operation from low to high sp
ee d s.
4. Valve M ec hanism: O. H.V. Bo th intake and exhaust val ves areof
rotation ty
pe for h ig her durability of th e v al ve sea t. Co upled with a
friction
gea r wi th one e xtr a too th . th e timing ge ar tr ain is intended
to eliminate the
bac klash at th e time of gea r engagement to redu ce
gea r noi se,
5. Intake System: The intake manifold is of independent branch
type for
hi gher intake efficiency.
6. Fu el Sys tem: The fu el injection pump isa B osc h VE type distrib-
utor pump, sma ll in size and lig ht in weight. contri bu ting toward
noise reduction. Sin
ce fu el can be cut with the so lenoid va l ve built
in
th e pump.theengine operation can be stopped by turningoff the
ignition switch.
SP EC Ifi CAT I ONS
Number of Cylinders& Arr an ge ment ................ .4 in-line
Cylinder Bore& Stroke .3,5 in, x 4 in .
Displa
ce ment . . . . . . . . . . . . .. , .. , .. . ..... 154 in.
Co mpression Rati o. . . . . . . . . . . .2 1. 0
Co mbustionChamber . . . . . . •. . . . .... , , , .S wirl Type
Firing Order ............. , . . . ....... , , . . ... 1·3 -4-2
Inj ec tion Pump , . . . . . . ... B osc h Distributor Type
Governor . . . . . . . . . . . .
.. M ec hanic al (Built in Pump)
Lubri ca tion Me th od . . ... PressureF ee dType
Cooling Method ............. , ........... Fr esh Water Cooled
Auxiliary Sta rt er . . . . . . . . . . ...... Gl ow Plug
El ec trical System Voltage "...... . ......... 12 Vo lt s
Dry Weight of
En g in e (w/ Tr an s. ) . . . . . . . . . . . . . .692 Ib s.
Power Take-off ... .VariousCrankshaft Pulleys
n e
~
•
~
•
~
~
~
~
~
z
~
~
~
z
"
.. ~~ v ; '~~~~~~~
•
. 6
PERFORMANCE DATA
o fDOll 1«13 1101 noo 2fIDII DlII
EN GI NE SPEED RPM
•
- oj
1<
Maximum Torqu e. . . 11 7. 9Ib . f l.l 2200 r.p.m.
One Ho ur Rat ed Power Output
.... 44.8 HP/ 2000 r.p.m.,55.2 HP12500 r.p.m .. 62 HP / 3000 r.p.m.
Co ntinuo us Rated Power Output
. ... 38 HP /2000 r.p.m ., 46.9 HP 12500 r.p.m ., 52 .8 HP / 3000 r.p.m.
Maximum Power Output. ... ......... 69 HP/ 3600 r.p.m.
Specilic Fuel Consumption ..... 0.42Ib '/ HP·hr.
Capac it y of Lubr ic ant ... . . . . . . . . . . . . . . .. 6 .3 ql.
Capac it y ofCoolan t(e ngine only) . . ....... 10 .5 ql.
Pe rf orman ce is ba se d on JI S standard atmospheric condition
(atmospheric press
ur e 760mm H g, temp 20o C, humidity 65 %)
with out cooling fan .
STANDARD EQUIPMENT
Dir ec t driv e hydraulic transmission
Adjustable
fl ex i so lator engine mo unts (1 8" on ce ntr e)
Fr
es h water cooling sys tem (
Coolant Recovery Tank
12 volt
55 a mp ere alternator
Thr ottl e, and s hift co ntr ol brackets
Gl ow plug cold weather starting a id
Eng in e pr e- wir ed at the factory with a single 8 pin conn ec tor
Operators manual
OPTIONAL EQUIPMENT
Various accessory front pull eys
Water Injected Exhaust Elbow
Hydr o· Hu sh Mufll er
Se a Water Strainer
Alt ernator Output Splitter
'(9 1_\:"'" Ii"';')
I ...... r ~ ".
.. - 'w
'\, '~J~ " "' " 1\ .
1,- " )1
.' E!UERBEIf£ • ~/.
I Iff ' . _ •
Five Fun ction El ec tric Instrument Pan el including Ho ur Meier
and T
ac hometer
A wide variety of Manual and Hydraulic Transmi
ss io ns are available
in various Reduction G
ea rs and V ee Drive s.
CALL YOUR WESTERBEKE REPRESENTATIVE
OR CONTACT THE ...
J. H. WESTERBEKE CORP.
Manne IoP ·lfI:l I/ 5. \1 Printed III US, \ Copynllht W~ 'l ' rt )t' kc Cu rp A
vo n Indu s tr ial Park, Avon , MA 0232 2, ( 617 ) 5 88· 770 0
Cab le : W es tc orp , Avon , Tele x: 92· 4444