This document provides technical specifications for Yanmar Marine Diesel Engines models 8LV-320/350/370 series. It describes the engines as 4-stroke, vertical, water-cooled diesel engines with maximum output ranging from 235 kW to 272 kW. Additional details include an 8-cylinder V-block configuration, direct injection common rail combustion system, and turbocharged aspiration. Dimensions, weights, and environmental compliance information are also listed. Performance curves show output, torque, and fuel consumption graphs across operating speed ranges.

1. MARINE DIESEL ENGINES
8LV-320/350/370 Series
NOTE:
Fuel condition: Density at 15°C = 0.84 g/cm³
Fuel temperature 40°C at the inlet of the fuel injection pump [ISO 8665: 2006]
Technical data is according to ISO 8665: 2006/3046-1
Dimensions
Configuration 4-stroke, vertical, water cooled diesel engine
Maximum output at crankshaft 235 kW @ 3.800 rpm / 272 kW @ 3.800 rpm
according ISO 8665:2006 (320 mhp @ 3.800 rpm) / (370 mhp @ 3.800 rpm)
Continuous rating output at crankshaft 214 kW @ 3,683 rpm / 248 kW @ 3.683 rpm
Displacement 4,46 Ltr (272,24 cu in)
Bore x stroke 86 mm x 96 mm (3.38 in x 3.78 in)
Cylinders 8 in V-90°
Combustion system Direct injection Common-rail system
Compression Ratio 15:8
Low Idle rpm 550 rpm
Aspiration Turbocharged with twin TC
Electric system 12V
Alternator 12V - 180A
Start-assist Glow-plug system
Cooling system Fresh water cooling by centrifugal fresh water pump
Sea water cooling by rubber impeller seawater pump
Lubrication system Enclosed, forced lubricating system
Direction of rotation (crankshaft) Counter clockwise viewed from flywheel side
Dry weight without gear 435 Kg (959 Lbs)
Environmental EU RCD, EPA TIER 3, EMC
Engine mounting Rubber type flexible mounting
NOTE: Fuel condition: Density at 15°C = 0.84 g/cm3 Fuel temperature 40°C at the inlet of the fuel injection pump (ISO 8665:2006)
Dimensions (For detailed line-drawings, please refer to our web-site: www.yanmarmarine.com or contact your supplier)
8LV-320 / 8LV-370
450 mm (17,72 in)434 mm (17.08 in)
559.5mm(22.03in)224mm(8.82in)
167 mm
(6.57 in)
170 mm
(6.69 in)
DIRECTION
OF ROTATION
Right side viewGear view
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601 mm (23.66 in)
518.5 mm (20.41 in) 492.5 mm (19.39 in)
1133 mm (44.60 in)
15mm(.,59in)
400mm(15.7in)
45°
56mm
(2.16in)
LUBE. OIL FILTER
FUEL FILTER
OIL DRAIN PLUG
M12x1.25 DEPTH 12.5
EXHAUST OUTLET
8LV-320 / 8LV-370 Series
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8LV-320/8LV-350/8LV-370
Configuration 4-stroke, water-cooled diesel engine
Maximum output at crankshaft 235 kW@3800 rpm [320 mhp@3800 rpm]
257 kW@3800 rpm [350 mhp@3800 rpm]
272 kW@3800 rpm [370 mhp@3800 rpm]
Displacement 4.46 ltr [272.24 cu in]
Bore x stroke 86 mm x 96 mm [3.38 in x 3.78 in]
Cylinders 8 in V-90°
Combustion system Direct injection Common Rail System
Compression ratio 15:8
Low Idle rpm 550 rpm
Aspiration Turbocharged with twin TC
Electric system 12V
Alternator 12V - 180A
Start-assist Glow-plug system
Cooling system Fresh water cooling by centrifugal fresh water pump
Sea water cooling by rubber impeller seawater pump
Lubrication system Enclosed, forced lubricating system
Direction of rotation [crankshaft] Counterclockwise viewed from flywheel side
Dry weight without gear 435 kg [959 lbs]
Environmental EU: RCD EMC
US: EPA Tier3
Engine mounting Rubber type flexible mounting
EN_DS8LV320/350/370_0713

2. MARINE DIESEL ENGINES
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Propellor power curve
CrankshaftTorqueNm
CrankshaftTorquelb-ft
FuelConsumptionL/hr
FuelConsumptiongal/hr
Crankshaft Speed min -1
Crankshaft Speed min -1
Crankshaft Speed min -1
Crankshaft Speed min -1
Crankshaft Speed min -1
Crankshaft Speed min -1
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Maximum output at crankshaft
Power 8LV-350 Torque 8LV-350
Propellor power curve
Fuel Consumption 8LV-350
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Maximum output at crankshaft
Propellor power curve
CrankshaftTorqueNm
CrankshaftTorquelb-ft
FuelConsumptionL/hr
FuelConsumptiongal/hr
Crankshaft Speed min -1
Crankshaft Speed min -1
Crankshaft Speed min -1
Power 8LV-370 Torque 8LV-370 Fuel Consumption 8LV-370
Output(crankshaft/propellershaft)kWOutput(crankshaft/propellershaft)kWOutput(crankshaft/propellershaft)kW
Output(crankshaft/propellershaft)mhpOutput(crankshaft/propellershaft)mhpOutput(crankshaft/propellershaft)mhp
CrankshaftTorqueNm
CrankshaftTorquelb-ft
FuelConsumptionL/hr
FuelConsumptiongal/hr
Maximum output
at propeller shaft
Maximum output
at propeller
shaft
Maximum output
at propeller
shaft
Fuel Consumption 8LV-320Power 8LV-320 Torque 8LV-320
Maximum output at crankshaft
148
248
348
448
548
648
148
248
348
448
548
648
148
248
348
448
548
648
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Performance Curves
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NOTE: All data subject to change without notice. Text and illustrations are not binding.
drive systems
* Other marine gearboxes and configurations available upon request. Contact your local supplier for more information.
• Yanmar CAN-bus control system
• Electronic CAN-bus control-head
• Multi-function colour display
• NMEA2000 or J1939 gauge output
• Second or third station - optional
control system
KMH50A [down angle 8°]
KMH52V [integral V-drive 12°]
Hydraulic Actuated Multi-friction disc clutch
Hydraulic Actuated Multi-friction disc clutch
43 kg excl. foot and cooler [=15.5 kg]
59 kg excl. foot and cooler [=20 kg]
1.22/1.22
Clockwise & Counterclockwise viewed from the stern
Clockwise & Counterclockwise viewed from the stern
API class: CF or higher SAE grade #30
API class: CF or higher SAE grade #30
494 kg [1089 lbs]
514 kg [1133 lbs]
Model
Type
Dry weight
Reduction ratio [fwd/asn]
Direction of rotation
Lub oil specifications
Dry weight engine and gear
Model
Type
Dry weight
Reduction ratio [fwd/asn]
Direction of rotation
Lub oil specifications
Dry weight engine and gear
1.67/1.67
1.58/1.58
2.13/2.13
2.08/2.08
2.43/2.43
2.47/2.47
EN_DS8LV320/350/370_0713