Marine–Series

UM6WG1WM-AB1

Engine Specification Data

Common Specifications:

Marine Rating	M1
IMO
EPA Emissions	U.S. EPA Tier 2 Certified

Model	UM6WG1WM-AB1
Number of Cylinders	6
Bore and Stroke--in.(mm)	5.79×6.06 (147×154)
Displacement--in3 (L)	957 (15.682)
Compression Ratio	16.0 : 1
Valves per Cylinder--Intake/Exhaust	2/2
Firing Order	1-5-3-6-2-4
Combustion System	Direct injection
Engine Type	In-line,4-Stroke
Aspiration	Turbocharged and Intercooled
After cooling System	Sea Water or Engine Coolant
Engine Crankcase Vent System	Open
Maximum Crankcase Pressure--in.H2O (kPa)	3.53 0.88

Rated Power--hp (kW)	506 (377)
Rated Power (Metric) Fuel at 104F (40 C)--PS	513
Rated Speed--rpm	1800
Rated Torque-- lb-ft (N-m)	1475.590972 (2001)
Peak Torque--lb-ft (N-m)	1726 (2339)
Peak Torque Speed--rpm	1200
Torque Rise--percent	16.9
Low Idle Speed--rpm	450
BMEP--psi (kPa)	233 (1603)
Smoke at Rated Speed--Bosch NO.	0

Minimum Ventilation Area-- in2 (m2)	357 (0.23)
Maximum Allowable Air Temperature Rise
Ambient to Engine Inlet-- F (C)	77 (25)
Engine Air Flow--ft3/min (Nm3/min)	976 (27.6)
Intake Manifold Pressure--psi (kPa)	16.8 (116)
Maximum Air Intake Restriction
Dirty Air Cleaner--in.H2O (kPa)	20.1 (5.0)
Clean Air Cleaner--in.H2O (kPa)	8 (2.0)

Engine Heat Rejection BTU/min (kW)	13536.17067 (238.0)
Engine Radiated Heat--BTU/min (kW)	1364.992 (24.0)
Coolant Flow--gal/min (L/min)	80 (301)
Minimum Coolant Fill Rate--gal/min (L/min)	3.2 (12)
Thermostat Start to Open-- F (C)	174 (79)
Thermostat Fully Open-- F (C)	192 (89)
Maximum Top Tank Temperature-- F (C)	210 (99)
Min. Water Pump Inlet Pressure--in.H2O (kPa)	0 0
Recommended Pressure Cap--psi (kPa)	14.5 (100)
Max. Pressure Drop Across Keel Cooler--psi (kPa)	4.4 (30)
Engine Coolant Capacity--qt (L)	66 (62)

Recommended Battery Capacity
Cold Cranking Amps at 32 F (0) -- amp	810
Max. Starting Circuit Resistance -- Ohms	0.002
Starter Rolling Current at 32F (0C)--amp	380

Exhaust Temperature-- F (C)	914 (490)
Exhaust Gas Flow--ft3/min (m3/min) High temp.gas	2587 (73.3)
Min. Exhaust Pipe Diameter,Dry--in. (mm)	6 (150)
Min. Exhaust Pipe Diameter,Wet--in. (mm)	8 (200)
Max. Allowable Back Pressure-in.H2O (kPa)	53.4 (13.3)
Max. Weight on Turbocharger--lb (kg)	33 (15.0)

ECU Description	Isuzu Motors Electronic Control
Fuel Injection Pump	DENSO HP0-UHD
Governor Type	Electronic Controlled
Governor Regulation--percent	15
Total Fuel Flow--lb/hr (kg/hr)	655 (297)
Total Fuel Flow--gal/hr (L/hr)	92.5 (350)
Min. Rec'd. Fuel Line ID--in. (mm)	0.75 (19.0)
Fuel Consumption--lb/hr (kg/hr)	171 (77.7)
Fuel Consumption--gal/hr (L/hr)	24.2 (91.6)
Maximum Leak Off Line Pressure--psi (kPa)	5.8 (40.0)
Max.Fuel Transfer Pump Suction Lift--ft (m) fuel	1.6 (0.5)
Max.Fuel Inlet Restriction--in.H2O (kPa)	-120.4 (-30)
Max.Fuel Height Above Transfer Pump--ft (m)	9.8 (3.0)
Max.Fuel Inlet Temperature -- F (C)	140 (60.0)
Fuel Filter Size at 98% Efficiency--Micron	4

Oil Pressure at Rated Speed--psi (kPa)	50 (346)
Oil Pressure at Low Idle--psi (kPa)	13 (92)

(Includes Engine,Flywheel Housing,Flywheel & Electrics)
Length--in. (mm)	75 (1905)
Width--in. (mm)	43.0 (1092)
Height (centerline to top)--in. (mm)	32.2 (818)
Height (centerline to bottom)--in. (mm)	17.1 (435)
Weight,dry--lb (kg)	3307 (1500)
Center of Gravity Location
From Rear Face of Block (X-axis)--in. (mm)	20.4 (519)
Right of Crankshaft (Y-axis)--in. (mm)	0.4 (9)
Above Crankshaft (Z-axis)--in. (mm)	7.9 (200)
Max.Allow.Static Bending Moment at Rear Face
of Flywhl Hsg w/5-G Load--lb-ft (Nm)	600 814
Thrust Bearing Load Limit (Forward)--lb (N)	1850 (8230)
Maximum Installed Angle
Front Up--degrees	12
Front Down--degrees	0

Sea Water Pump Flow--gal/min (L/min)	83 (314)
Maximum Inlet Restriction--in.H2O (kPa)	78.7 (19.6)
Maximum Outlet Pressure--psi (kPa)	1.1 (7.9)
Maximum Suction Lift--ft (m)	6.6 (2.0)

Engine rpm	Crank. Power hp(kW)	Crank. Torque lb-ft(Nm)	Prop. Absorption hp(kW)	Prop. Fuel gal/hr(L/hr)
1800	506 (377)	1476 (2001)	506 (377)	24.2 (91.6)
1700	491 (366)	1517 (2057)	426 (318)	20.4 (77.2)
1600	475 (354)	1559 (2114)	355 (265)	17.0 (64.3)
1500	457 (341)	1601 (2170)	293 (218)	14.0 (53.0)
1400	438 (326)	1642 (2227)	238 (177)	11.4 (43.1)
1300	417 (311)	1684 (2283)	190 (142)	9.1 (34.5)
1200	394 (294)	1726 (2339)	150 (112)	7.2 (27.1)
1100	331 (247)	1582 (2144)	115 (86)	5.5 (20.9)