Specifications; Engine Specifications - Yanmar 4BY2 Operation Manuals

SPECIFICATIONS

ENGINE SPECIFICATIONS

Engine Model
Application Design
Number of Cylinders
Type
Combustion System
Aspiration
Bore x Stroke
Displacement
Firing Order*
Compression Ratio
Maximum Output at Crankshaft**
kW (metric hp) at 4000
rpm
Mean Pressure
Torque
Low Idle Speed (Warm En-
gine @ 88°C [190°F])
Cold Start Speed @ 20˚
°C (68°F)
High Idle Speed
Rotation Direction
No. of Valves per Cylinder
Valve Adjustment
Turbocharger
Charge Air Cooler
Electrical System
Starter
Charging System
Battery Capacity - Recom-
mended
BY Series Operation Manual
4BY2-150 / 4BY2-180 /
150Z
Models numbers with no suffix letter are used in marine gear applications. Mod-
els having a "Z" suffix are used with stern drive.
In-line 4
15° inclined, water-cooled, dual overhead camshaft, 4-cycle diesel
Turbocharged with charge air cooler
84 mm x 90 mm (3.307 in. x 3.543 in.)
1.995 L (122 cu in.)
1-3-4-2
16.5:1
110 kW (150 hp) 132 kW (180 hp)
1.66 MPa
(240.8 psi)
320 N·m
(236 ft-lb)
750 rpm (ECU-controlled) ***
1200 rpm gradually decreasing to warm engine idle @ 88°C (190°F)
Counterclockwise (viewed from flywheel)
MHI with pneumatic wastegate
12 V / 85 Ah / 680 CCA (cold cranking amps)
© 2008 Yanmar Marine International
6BY2-220 /
180Z 220Z
Direct injection
162 kW (220 hp)
1.95 MPa 1.62 MPa
(287.2 psi) (234.96 psi)
360 N·m 500 N·m
(265 ft-lb) (369 ft-lb)
670 rpm (ECU-controlled) ***
(ECU-controlled)
4600 rpm
4
Hydraulic self-adjusting
HOLSET with pneumatic wastegate
Seawater cooled
12 V
12 V / 2 kW (2.7 hp)
12 V / 150 A
6BY2-260 /
260Z
In-line 6
2.993 L (183 cu in.)
1-5-3-6-2-4
16.5:1
191 kW (260 hp)
1.92 MPa
(278.47 psi)
550 N·m
(407 ft-lb)
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