~ ~

CumminsMarineDiesel VTB.370.M

Specifications

Horsepower .., ".-" .370Governed RPM , '."'" .~OOO

Number of Cylinders.. . . ... -. . . . . . " -.8Bore and Str()ke ..., ,5'/." x 4'1."PistonOisplacement-cu. in. , 785Operating Cycles . . . . . .. . .. . . . . . . . . .4Crankcase Oil Capacity-ga!s. AI/.Engine Coolant Capacity-gals. 12Net Weight with Standard Accessories (lbs.}. 2175

Desig" Features

a.arin!J$: Pre:cisiQi'I type,steelback!;!d inserts. 5 mainbea,dngs, 31/." diameter. Connecting Rod - SIfa" diameter;

Breather, Crankcase: Seated type element.

Camshaft: Single camshaft cpntrols all valve and injectormovement. Induelion hardened alloy steel with gear drive.

Camshaft Followers: Roller type for long.eam and followerlife.

Connecting Rods: Drop forged, 8.193". center to centerlength. Taper piston pin end reduces unit pressures.

Cooler. Lubricating Oil: Tubular type, jacket water cooled.

Crankshaft: . High tensile strength steel forging. Bearingjournals are induction hard.ened. Fully counterweighted.

Cylinder BI(:Iclc: Alloy cast iron with retriovable, wet liners.Cross bolt support to main bearing cap.

Cylinder Heads: Two, one each bank. All fuel lines aredr'Hled pas.sages. Individual intake and exhaust porting foreach cylinder.

Oamper, Vibration: Compressed rubber type.

Fuel System: Cummins PT wear-compensating system withintegral, flybelt type, mechanical variable speed governor.Camshaft actuated injectors.

Gear Train: Heavy duty, located rear of cylinder block.

Lubrication: Force feed to all bearings. Gear type pump.

Pistons: Aluminum, cam ground, with two compres"iqn andone QiI ring.

Piston Pins: PI." diameter, full floating.

Thermostat: Single unit, modulating bypass type.

Turbocharger: Cummins rcar mounted.

. .Valves: Dual intake and exhaust each cylinder. Each valve1'/8" diameter. Heat and corrosion resistant face on ex-haust valve.

- -. '';'

Big Displacement Design Features

1 Internal Fuel Lines: Drilled passages in cylinder headseliminate threaded fuel line connectors and external lines.

2 Large Intake and Exhaust Passages: Minimize restrictionof air and exhaust flow. Allows maximum air charge forclean burning, top economy.

3 Overhead Valves: Precision machined from high strengthalloy steel. Intake valves are of silichrome steel. Exhaustvalves of big displacement models are nitrogen steel forhigh temperature strength and faced with corrosion resist-ant material.

4 Open Type Combustion Chamber: Gives most efficientcombustion. . . most power from each gallon of fuel.

5 Replaceable Wet-type Cylinder Liners: Dissipate heatfaster. Liners are easily replaced without reboring block.

6 Conventional Push Rod and Rocker Lever Arrangement:Activates valves and Injectors from a single camshafjRoller type camshaft followers are used for long iife.

7 Cam-ground Pistons: Assure perfect fit at operating tem-peratures.

8 Alloy Cast Iron Cylinder Block: Follows proven designand material specification to achieve maximum durability.

9 Large Volume Water Passages: Give even flow of coolantaround cylinder liners, valves, and Injectors to draw excessheat from combustion chamber. Centrifugal pump circu-lates large volumes of water.

10 Connecting Rods: Forged from high tensile strength alloysteel. I-beam section gives maximum strength. Largediameter piston pins are full-floating. Tapered piston pinend used for superior load distribution and maximumpiston crown material.

11 Fully Counterweighted Crankshafts: Precision machinedfrom high tensile strength steel forgings. Bearing journalsare induction hardened for long life.

Pleasure

1.

Boat Performance

2000 2200 2400 2600 3000

"0,"' "m . ,,"-

Gross brake horsepower (intermittent).

2'

20 g

15 huO

',0 ~

"G'" """ - "M

2 Net horsepower with reverse reduction gear, alter-nator and raw water pump. (Intermittent).Hypothetical propeller power curve (2.7 exponent).Fuel consumption for net shaft horsepower.Fuel consumption for hypothetical propeller.

Curves based on 500 ft. altitude (29.38 In. Hg.) and85F. intake air temperature.

34.5.

~uei consumption curves based on iuel weight 01'7.0 ibsJU.S. gallon.

The Pleasure Boat rating is Intended for thoseapplications where ful! throttle operation does!lot exceed fifteen minutes duration in anyonehour, such as privately owned pleasure craft.

Cummins

CumminsCumminsCumminsCummins

Engine Company, Inc., Columbus, IndianaAmericas, Inc., Columbus, Indiana, U.S.A.Diesel Australia, Ringwood, Austra!iaDiesel International Ltd.

Engine Company Ltd., London, England

47201

. .

Standard Equipment

Cleanm. Air: 5;1ooce, 'ype

Ce"osion Resistor: Mounted. Replaceable Flaetguacd cle-cca.,j Checks ",,; ood co'co"on. cunt,ols ac'd'b and ,a-","'OS ,mp,,,"'o, !comcoolae! -Dipstick, Oil, Po,' side wher viewing engine hom d,iveond.

Elec"ical Equipment, 12 volL 55 ampe'e a.,. syste",. Ie-cludes starting mob altc.,,.to,. ,egu'at0' magneticswitch and st,,"og switch.

Exchanger, Heat, Tubui" type mounted.

Filters; fleetgua<d. Lubricating oil. full f!ow repiaceablepape, element type, mo,mtnd. ruel, paper element throw-"way type. not mounted.

Flywheel, Fo, ,ov",se and ,eduction gear.

Gear, Marine, Capitol 12400. 2.05,1 'everse and ,eductionge", with unbo,ed propeller shaft companion flange

Governor; Mechanical variable speed type.

Housing, Flywheel, SAE. No.2 with madne mounting pads.

Manifold, Air intake, Two. located on inside of engineVe. and conneeled to a single turbocharger.

Manifotd. E,haust, Two, "esh watee cooled, connectedvin u wate' cooled collector to turbocharger.

Pan, Oil, Aluminum, rear sump type, 4'n U. S. galloncapacity.

Pump. Coolant, Gear driven, cen"ifugal type, gO GPM @3000 'am.

Pump, Raw Water; Gear driven, 65 GPM @ 3000 rpm.

Support. Engine, Marine 'ype, front and rear.

Turbocharger; Cummins. T-50 with outlet to starboard side.

Optional Equipment

Cleaner, Air; 16' diameter. oil bath type for continuousratong.

Dipstick. Oil, S,"r;,,,ard side when view,ng .ngine fremdlivo eod

Electrical Equipment, 24 volt. 45 ampere a.c. syslem; 32vol;. 45 amper. a.c. system.

Gear, Marine, Twin o;sc MG-509 1.451. 2.04,1 or 2.95,'ratio' Capitol 4Ho-200. 1'1 ratio Capitol 12400. 15,1 or2431 ,alio. .

Propeller Rotation' Loft haod.

Switches. Alerm, Low oil pressure and high wate' tempeca-leHe.

Turbocharger Outlet, Port "de.

Vibration isolators, Rubber typ.

.'

VTS-370-M',,'M ''''''''''00 Di,,'.m """

E' '€ SPECIFICATIONS.

- Aodel' VfS(N)-3"ro-M 0Type. S Cylinder, 90 Vee

4 Cycle, Tud.o,harged

J!6Il.ID. (600 F. ' 29.95 IN. !G.)

Srake Horsepower> (SIP)Shaft Horsepo"er, (SliP)Brake Mean Effective Pressure,(BI'EP)Piston 5;>eed. (FT.f!oIIN.)

WEIGHT. (Dry)

MARINE GEAR.

Manufacturer>Model'Type.Reduction Ratio'

R.H. hopeller Rototion.Standard.Optional.

L. H. Propeller Rotation>Optional'

Lubricating Oil.Capacity.

-Vi,cosi ty.

CUMMINS MARINE ENGINE APPLICATION DATA~ 370-1

(Intermittent)~re craft370 . 3000 RPM350 . 3000-125PSI2062

Sore & Stroke. (inche,) 5 1/2 x 4 lieDi,pla,ement. (c,; In.) 7B5Compress!on Ratio. 16.3'1

(Continuous>WorkSoot

270 . 2600 RPM252 0 2600 RPM105 PSI17S9

Standard Pan200100300

Standard Pan

22 QTs.IS QTS.

Plea.ure Craft

2775 LBS. (Standard Engine with Revarse Reduction Gear)

Standard

12 VOLT" 55 AMP

aattery Capacity'T...,parature Range.SystOl1\ Voltage./..in!- Capacity in Ampera Ho>Jrs

II 20 Hour Rate 400 200I'I:>TE, 12 VOLT starter Is high output starter.

Starting Cir,uit. ~ ~Cable Si.e'

~3:20 CI 2800 RPIA300 CI 2800 APM1I5PSl1925

CaDitol12400Hydraulic

~*4HD-200

Hydraulic

2.06'11.5.1 1>1

~rk Ii.crewBoah~MG--5OBHydraullc

1.47.1, 2.04<1,2.95.1, 3.39'1

1.47.1, 2.04'1,2.95'1. 3.39'1

«) The us.e of Capitol 411:>-200 Direct Drive Matine Gear is restricted to Vee Drive Appllcations only.

11 QTS.SAE 20HD Below 50° F.SAE 30HD Above 500 F.

N.<.XIMUMANGULARITYFOR SUsrAINED oPERATION,Flywhe.el End Down.Damper End Down'Side to Side.

ENGINE LUBE OIL sysrEM.Oil Pan Capacity.

H!-LeveloLo-Level'

Lube Oil'Specifications>VI scosl ty.

ELECTRICAL sysrEM. (Negative Ground)AC System. ("i th Alternator)

Del 00'

1.0>1, ~.O6..1 1.1

Oil should meet quality requir nts of Military 5;>eo- MIL-L-2104A.SAE lOW when _lent t""Perature is between 00 F. & 320 F.SA!' 20W when _lent t""Perature Is between 32". F. & 900 F.SAE 30W when ambient temperature I s above goO F.

~32 VOLT-30-24VOLT-30-

Above 000 F.

~ ~ m150 130 100

7 QTS.APG 70 aelow 500 F.APG 90 Above 500 F.

3.0 QTS.

260 130

Cable Length\>. (FEET)

Cable Geuae Relative to Circuit Lenoth#00 #000 t/QOOO

(Two#0) ('Two#12 VOLTS .00075 OI:lo\S 0-6 6--8 8-lD 10-124 YOLTS .002 O!I.IS 0-20 2O-TI 27-35 35-432 VOLTS .002 oms 0-20 20-27 27-35 35~4

Inolude both the feed and returncable, between battery and starter.(*) When determining circuit 'length,

DOF. - 320 F.~ w: i2:i

l"ro

320 F. - 500 F.~ ~ .w:300

IVT8 -310-101IAIR INWCnON & CCNPARI'IIENT VENi"ILATION,

Air Cons_tion at Rated HP & Speed,Max1nwm Restriction at Inlet Manifold.Minimum Engine Compartment Vent Are..

Inlet.Outlet.

COOLII«isysrnhfleat Rejection to Coolantfresh Water (F. w.) ~ Fla..fresh Water (f. W.) P- Pressure.F.W. Syst... Capacity Including fleat Exchanger;Ra. Water (s.w.) PumpFlow.RawWater (S.N.) PumpPressure.MaximumInlet Restriction at S.W. PumpMinimumS.W. Pipe Size'MinimumSea Strainer Size. Simplex>

Duple..Allowable Pressure Orop Across Keel Cooler;Keel Cooler..

-2-

(Intermittent)Pleasure Craft900 CFM9 IN. H2'J

180 9<. IN.60 9<. IN.

Crew 80at&00CfMgIN. H2'J

180 9<. IN.60 9<. IN.

(Continuous)Work Boat

780 CfM{"'gIN. H:P ""

ISO SQ. IN.60 9<. IN.

14,BOO BIU/MIN. 12,BOO BIUfI<1N. 10,BOO BTUjMIN.90 GPII 84 GPM 78 GPM35 PSI 29 PSI 25 PSI12 GALS. 12 GALS. 12 GALS.70 GPN 6~ <;PN 61 GPNl~ PSI 13 PSI 12 PSI~ IN. 00. ~ IN. '13. ~ IN. 00.2IL 21L 21~2 1/2 IN. 2 1/2 IN. 2 1/2 IN.3 IN. 3 IN. 3 IN-4 PSI 4 PSI 4 PSIContact """"ins Engine COIIIpany with application data forspecific reco...endation.

EXHAUSISYSTEM.Exhaust Tamperatuxe.Gas Flow'Max. Back Pressure at Turbo Exh. Flange (*),.) Exhaust back pressure above 1.5 IN. 00.Mini- Exhaust Pipa (1.0.) Size.

Dry Syst O' - 10' Length ~ IN.10' - 20' Le.'gth 6 IN.20' - 30' Length 6 IN.

«) Wet System' 0' - 10' Length ~ IN.10' - 20' Length 6 IN.20' - 30' Length 6 IN.

(*) Based on injecting I~ GPM of raw water into the Exhaust Pipe.SUencer Restriction. (For Wet or Dry Systems) Maxi allowable pressure drop across silencer .~ IN. 113.

I~ F. 8250 f. SOOO F.2470 CFM Ig~ CFM 17S5 CFM3 IN. 113. 2 IN. 113. I.~ IN. 00.

results in approx. 1% power Ion per IN. 00.

FUEL SYSTEM.Fuel Consumption at Rated HI' & Speed'Fuel Flow to Pump at Rated HP & Speed'loIaxi Inlet R..triction at PuoIp,

With Clean Filter..With Dirty Filter..

Minimum She Fu.I Oil !<Apply Line'

21.4 CPH107 GPH (approx.)

5 IN.6 IN.6 IN.~ IN.6 IN.6 IN.

18.8 GPRg4 GPH (approx.)

5 IN,6 IN.6 IN.~ IN.6 IN.6 IN.

14.5 GPH73 GPH (approx.)

Mini SizeFu.I 011 Return Lin.'

4 IN. 113. 4 IN. 00. 4 IN. 113.8 IN. 113. 8 IN. 113. 8 IN. 113.5/8 IN. Tubing ~/8 IN. Tubing 5/8 IN. Tubing(#iO Hose) (#10 Hose) (#10 Hose)1/2 IN. Tubing 1/2 IN. Tubing 1/2 IN. Tubing(#8 Hose) (/IS Hos.) (#8 Ho.e)

Note' A Fuel Float Taok is required where fuel level in !<Apply rank is above Injector Return Fitting.

REFERENcES,D:awing"

Installation Diagrall'Standard Engine. (With Capitol 12400 Gear)

ElecuicalDiagra",Exhaust Diagra...Fuel Piping DiagramWater Piping Diagram

Specification Sheet.Performance Curve"

Pleasure BoatC=ew BoatWo:k Boat

"

Dradng No. 161836 (Sheet I)Drawing No. 161836 (Shoot 3)Drawing No. 161836 (Sheet 3)Drawing No. 161636 (Shoet 3)lkaw1ng No. 161836 (Sheet 3)Bulletin No. 95O37'l

Curvo No. PI968Curvo No. P2182Curve No. P2181

Specifications and data subject to change without notice.

Bulletin No. 952038 Dec. '63 ::u:..ins Engine Company,Inc. Printed in U.s.'