Compact engine design results in reduced weight and overall size increasing performance

Electronic control is by second-generation common rail with magnetic injectors

Engines include a CAN Bus system with J1939 and NMEA 2000® protocol

Yanmar LCD display and analog gauges via the J1939 CAN Bus network

Dual air intake ports provide optimized fuel/air mix resulting in high torque

Redundant shift and throttle control

MARINE / DIESEL ENGINES / 8LV-320 / 370

8LV-320/370Max. Output at Crankshaft 320/370 mhp / 3,800 rpm

Total Displacement 4.46 L

Configuration 4-stroke cycle

Cylinders 8

Engine Weight 992 lbs

Quick Specs

Vessel Control SystemThe 8LV operates on the SAE J1939 CAN Bus with data outputs in both J1939 and NMEA 2000®® protocols. Twin 8LVs connected to Yanmar’s ZT370 hydraulic clutch, counter-rotating prop stern-drives, can be fitted with Yanmar’s new Joystick control system. This allows for independent steering of the drives and independent shifting. The ZT370 gear change is so smooth that you’ll hardly feel it shift.

Twin TurbosThe twin turbos provide a wide power band. They spool up quickly forlow-end torque, and deliver maximum flow at higher rpm. They also ensure quiet and smooth operation throughout the range with great acceleration.

12V/180A Alternator StandardWith up to 180 amps output, the alternator delivers plenty of power fortoday’s marine electronics and other needs. In twin applications, the use of a power inverter on smaller boats may eliminate the need for a generator, further reducing weight and cost.

High Torque, Light Weight, Compact and QuietThe exceptionally quiet, smooth and compact engine is EPA Tier 3-compliant.

It has a wide power band, with adjustable idle speeds as low as 550 rpm for trolling

speeds in the marina, and tops out at 3,800 rpm. At a 992-pound dry weight, it has

the best power-to-weight ratio in its class.

Configuration 4-stroke, V8, common rail fuel injection

Maximum output at crankshaft 320 mhp @ 3,800 rpm / 370 mhp @ 3,800 rpm according ISO 8665:2006 (235 kW @ 3,800 rpm) / (272 kW @ 3,800 rpm)

Continuous rating output at crankshaft 290 mhp @ 3,683 rpm / 337 mhp @ 3,683 rpm (214 kW @ 3,683 rpm) / (248 kW @ 3,683 rpm)

Displacement 4.46 Ltr (272 cu in)

Bore x stroke 3.38 in x 3.78 in (86 mm x 96 mm)

Low Idle rpm 550 rpm

Aspiration Twin turbocharged

Starting System Electric starting 12 V - 2 kW

Alternator 12 V - 180 A

Cooling system Fresh water cooling with heat exchanger

Direction of rotation (crankshaft) Counter clockwise viewed from flywheel side

Dry weight without gear 992 Lbs (450 Kg)

Environmental Certification EU: RCD, US: EPA Tier 3

Engine mounting Flexible type isolators

NOTE: Fuel condition: Density at 15°C = 0.84 g/cm 3; 1kW = 1.3596 mhp = 1.3410 HP* Fuel temperature 40°C at the inlet of the fuel injection pump (ISO 8665)Technical data is according to ISO 8665 / 3046

DRIVE SYSTEMS

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8LV-320/370 specifications

Property of Yanmar Marine International (All rights reserved).

8LV-8LVxBOBTAIL_R2011-01.dwg

DETAIL OF FLYWHEEL (1:5)

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Type KMH50V Hydraulic Actuated Multi-friction disc clutch

Dry weight 59kg excl. foot and cooler

Reduction ratio 1.22/1.22 1.58/1.58 2.08/2.08 2.47/2.47

Direction of rotation from the stern

Clockwise / Counterclockwise viewed from stern

Lub oil specifications API class: CF or higher SAE grade #30

Dry weight - engine & gear 1122 lbs (509 Kg)

Type KMH51A Hydraulic Actuated Multi-friction disc clutch

Dry weight 41kg excl. foot and cooler

Reduction ratio 1.67/1.67 2.13/2.13 2.43/2.43

Direction of rotation from the stern

Clockwise / Counterclockwise viewed from stern

Lub oil specifications API class: CF or higher SAE grade #30

Dry weight - engine & gear 1,081 lbs (491 Kg)

Property of Yanmar Marine International (All rights reserved).

8LV-8LVxBOBTAIL_R2011-01.dwg

DETAIL OF FLYWHEEL (1:5)