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DCEC L8.9CMII238 Marine Main Engine

DCEC L8.9CMII238 Marine Main Engine is a 6-cylinders, 8.9 liters four-strokes engine with 114mm bore and 145mm stroke.

Equipped with Weifu AD fuel pump and RSV governor, engine comes with turbocharger.

The prime power at 2200RPM of DCEC L8.9CMII238 marine Main engine is 235bhp.

Based on standard DCEC marine Main engines, SeaMac provides both heat exchanger cooling and keel cooling marine Main engines, we also provide complete propulsion system that including marine engine, gearbox, shaft, propeller as complete power system. SeaMac provides full life cycle services for all our customers, from design to power system supply, from installation to commissioning, from after-sales service training to spare parts supply, from trouble shooting to overhaul technical support.

All of DCEC marine Main engine are comes with dry type exhaust system, which means dry type exhaust manifold and dry type turbocharger, SeaMac provides upgrading services for water-cooled exhaust system, which modify dry type exhaust system into water-cooled exhaust system, which are quite important and often requested by passenger boat projects.

Advantages of L8.9CMII238 Marine Engine

  • Leading design and excellent manufacturing technology make the engine more reliable and durable, suitable for high-strength, heavy-duty work under severe working conditions.

  • The cylinder block and cylinder head adopt integrated design to prevent the occurrence of engine water and oil leakage. The parts are about 40% less than other similar engines, and the failure rate is greatly reduced.

  • The cylinder bore adopts a platform mesh honing design, the perfect geometric structure effectively prevents oil leakage, and the use of advanced technologies such as new piston ring components and gasket crimping and molding reduces oil loss.

  • Synchronized with the advanced design and sophisticated manufacturing of CMS in the United States, it is suitable for harsh working conditions and has strong high-intensity and heavy-duty operating capabilities.

Technical Specifications

Engine Model:L8.9CMII238
Engine Type:6 Cylinders
Displacement:8.9 L
Rated Speed:2200 RPM
Rated Power / Speed:235 bhp @ 2200 RPM
Peak Torque:760 N.m @ 2200 RPM
Aspiration Method:Turbocharged
Emission Standard:N / A
Bore*Stroke:114 mm * 145 mm
Packing Size(L*W*H):N / A
Wet Weight:877 kg
Lead Time:15-30 Working Days
Payment Terms:T/T ,L/C

Coming Soon

Engine ModelPeak TorqueRated PowerFuel SystemAspiration
L8.9CMII223870 N.m @ 1800 RPM220 bhp @ 1800 RPMHPCRTurbocharged
L8.9CMII238760 N.m @ 2200 RPM235 bhp @ 2200 RPMHPCRTurbocharged
L8.9CMII313998 N.m @ 2200 RPM308 bhp @ 2200 RPMHPCRTurbocharged
General Infomation of DCEC L8.9CMII238 Marine Main Engine
Engine ModelL8.9CMII238Curve NumberM-FR96909
Engine ConfigurationD563033MX03CPL Code5570
Date15-Apr-19Displacement8.9 liter
Bore*Stroke114 mm * 145 mmAdvertised Power175 kW [235 bhp] @ 2200 rpm
Fuel SystemHPCRAspirationTurbocharged
Cylinders6110% Power180 kW [242 bhp] @ 2200 rpm
Performance Data of DCEC L8.9CMII238 Marine Main Engine
Rated Engine Power175 kW [235 hp]
Governed Engine Speed2200 RPM
Rated HP Production Tolerance3 ±%
Rated Engine Torque760 Nm [561 lbft]
Peak Engine Torque @ 1400 rpm1022 Nm [754 lbft]
Brake Mean Effective Pressure1076 kPa [156 psi]
Indicated Mean Effective Pressure1240 kPa [180 psi]
Maximum Allowable Engine Speed2440 rpm
 Maximum Continuous Torque Capacity from Front of Crank Specifications 
Maximum Torque Capacity from Front of Crank²N/A
Compression Ratio16.6:1
Piston Speed10.6 m/sec [2093  ft/min]
Firing Order1-5-3-6-2-4
Weight – Engine Only – Average877 kg [1933 lb]
Weight – Engine With Heat Exchanger System – Average1001 kg [2207 lb]
1 m sound pressure level – GB/T1859 < 93 dB
Governor Settings
Default Droop Value7%
Maximum Droop Allowed16%
High Speed Governor Break Point2280 rpm
Minimum Idle Speed Setting750 rpm
Normal Idle Speed Variation50 ±rpm
High Idle Speed Range Minimum2280 rpm
High Idle Speed Range Maximum 2400 rpm
Emissions (in accordance with ISO 8178 Cycle E3)
NOx (Oxides of Nitrogen)4.75 g/kwhr [3.54 g/hpꞏhr]
HC (Hydrocarbons) 0.35 g/kwhr [0.26 g/hpꞏhr]
CO (Carbon Monoxide) 1.50 g/kwhr [1.12 g/hpꞏhr]
PM (Particulate Matter)0.10 g/kwhr [0.07 g/hpꞏhr]
Jacket Water Aftercooled Engines (JWAC)
Coolant Flow to Engine Heat Exchanger322 l/min [85 gal/min]
Standard Thermostat Operating Range (Start to Open)71 °C [160 °F]
Standard Thermostat Operating Range (Full Open)83 °C [182 °F]
Heat Rejection to Engine Coolant³138 kW [7854 Btu/min]
Coolant Capacity 
Engine Only11 l [3 gal]
System Performance Data of DCEC L8.9CMII238 Marine Main Engine
Lubrication SystemMax. Allowable Oil Temperature (Sump)124 °C [255 °F]
Oil Pan Capacity (OP9314)
Low/High18.9 [22.7] l/l
Min. Oil Pressure at idle speed69 kPa [10 psi]
Maximum Operational Angularity of Oil Pan35 degree
Fuel SystemFuel Consumption at Rated Speed49.6 l/hr [13.1 gal/hr]
Approximate Fuel Flow to Pump181 l/hr [47.9gal/hr]
Maximum Allowable Fuel Supply to Pump Temperature70 °C [158 °F]
Approximate Fuel Flow Return to Tank132 l/hr [34.8 gal/hr]
Maximum Allowable Restriction to Fuel Pump
Clean Filter16 kPa [2.3 psi]
Dirty Filter30 kPa [4.4 psi]
Air System
Intake Manifold Pressure196 kPa [58 in Hg]
Intake Air Flow319 l/sec [676 cfm]
Heat Rejection to Ambient23 kW [1309 Btu/min]
Exhaust SystemExhaust Gas Flow739 l/sec [1565 cfm]
Exhaust Gas Temperature418 °C [784 °F]
Max. Exhaust Pressure10 kPa [3 in Hg]
Cooling System
Sea Water Pump flow4 ( Discharge Restriction Pressure 40 kPa )11.4 m3 /hr
Pressure Cap Rating (With Heat Exchanger Option)48 kPa [7 psi]
Max. Pressure Drop Across Any External Cooling System Circuit34 kPa [5 psi]
Electrical and Start SystemVoltage24 V
Cold Soak at -18°C (0°F) -Cold Cranking Amperes Rating750 CCA
Maximum Allowable Resistance of Starting Circuit2 Ohms
Min. start temperature without cold starting aid-12 °C [-10 °F]


Scopes of Supply of DCEC L8.9CMII238 Marine Main Engine

Air Intake System1. Air Intake Manifold        Exhuast System1. Exhuast Manifold
2. Air Filter2. Turbocharger
3. N / A3. Exhuast Elbow
Starting System1. Starter Motor        Charging System1. Charging Alternator
2. Starter Rely2. N / A
Lubricating System1. Oil Pump        Fuel System1. Fuel Transfer Pump
2. Oil Filter2. High-Pressure Fuel Pump
3. N / A3. Machanical Governor
4. N / A4. Fuel Filter
Engine Shut-Down System1. Engine Fuel Shut-Off Solenoid        Power Output System1. Flywheel
2. N / A2. Standard Flywheel Housing

Optional Accessories of DCEC DCEC L8.9CMII238 Marine Main Engine

Air Intake System1. Air Intake Pre-HeaterExhuast System1. Muffler & Bellows
2. Air Intake Pre-Filter2. Flame Trap
3. Air Filter Alarm System3. Spark Arrestor Type Muffler & Bellows
4. N / A4. DPF System
Fuel System1. Coarse FilterEngine Auiliary Accessories1. Hydraulic Oil Pump
2. Fuel Pre-Heater2. Hydraulic Cluch
Starting System1. Manual Magnetic DC ContactorCooling System1. Engine Monitor
2. Dual Ears Flywheel Housing2. Engine Protection System With Alarm System
3. Spring Starter Motor3. Machanical Engine Control Lever Syste
4. Air Starter Motor4. Electric Engine Control Lever System
5. Hydraulic Starter Motor5. N / A
6. Manual Magnetic DC Contactor6. N / A
Power Output System1. Gear Reduction GearboxCooling System1. Coolant Pre-Heater
2. Reverse Gear Box2. Jacket Water Heater
Lubricating System1. Oil Pre-HeaterEngine Mounting System1. Shock Absorber Pad

Committed to providing reliable premium propulsion system and power system for all kinds of ships around the world, SeaMac is a sub-brand of EMAC group that focused on maritime application.
SeaMac’s ranges of products mainly inclduing marine main engine, marine gearbox, marine propellers, marine control lever system, marine auxiliary engine, marine generator set and emergency generator set.
For more information of our marine proplusion and power system products, you are welcome to visit SeaMac homepage:

Modifiable components of DCEC L8.9CMII238 Marine Main Engine

Air Intake System1. Installation Position of Air FilterStarting System1. 12V Starter Motor for 12V Electric System
2. Upgrade to Heavy-Duty Type Air Fitler2. Upgrading to Specified Brand and Speicifications of Starter Motor
Exhuast System1. Can Modify Installation Position and Direction of TurbochargerCharging System1. 12V Charging Alternator for 12V Electric System
2. Water-Cooled Exhuast Manifold2. Explosion-Proof Charging Alternator
3. Water-Cooled Turbocharger3. Upgrading to Specified Brand and Speicifications of Charging Alternator
Fuel System1. Upgrade to Fuel Fitler That Integrated with Fuel Transfer Pump and Fuel Pre-HearterEngine Auiliary Accessories1. Additional Auxiliary Systems Can Be Added for Special Applications
Engine Shut-Down System1. 12V Solenoid for 12V Electric SystemCooling System1. Can Modify Engine Into Keel Cooling System
2. Explosion-Proof Solenoid2. N / A
Lubricating System1. Oil Pan PositionPower Output System1. Can Modify Size of Flywheel Housing and Flywheel
2. Number of Dipstick2. Dual-Ear Flywheel Housing (For Twin-Starter System)
3. Position of Dipstick Can Choose from 6 Positions3. Some of Models Can Modify Flywheel Housing Into PTO Integrated Type
4. Can Modify Oil Filter to Be Remote Installation4. Engine Have Connecting Port of PTOs, That Able to Provide Power Output
Engine Mounting System1. Can Modify Engine Mouting Bracket

Note: All Above Data are Just for Reference, All Data Might Change Without Notices or Updates, Please Contact Our Sales Team to Confirm All Details Via WhatsApp or Email.

The picture of Sale Manual showing the accessories and scopes of supply.

Engine Sale Manual

The picture of Installation Drawing showing the accessories and scopes of supply.

Installation Drawing

The picture of Installation Manual showing the accessories and scopes of supply.

Installation Manual

The picture of Operation Manual showing the accessories and scopes of supply.

Operation Manual

The picture of Engine Parts Catalogue showing the accessories and scopes of supply.

Parts Catalogue

The picture of Test Report and Certifcate showing the accessories and scopes of supply.

Report & Certifcate

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