Caterpillar C8.7 Marine Main Engine
The Caterpillar C8.7 marine main engine series is an I-6, 4-stroke cycle diesel engine, 117 mm (4.61 in) bore, 135.0 mm (5.31 in) stroke, 8.71 liters (531.5 in³) displacement. With common rail fuel system and electronic (A5E2 V2 ECM) governor.The Caterpillar C8.7 marine main engine series is rated at 2300 RPM and rated at 641 bhp (478 bkW).Caterpillar C8.7 marine main engine series complies with US EPA Tier 3/IMO II emission certification (commercial), X EU Stage IIIA emission standard, CCNR Stage II standard follows EU Stage IIIA standard, and the intake air is turbo-cooled.
Combustion air temperatures up to 45 °C (113 °F), seawater temperatures up to 32 °C (89.6 °F), and fuel temperatures up to 50 °C (122 °F) are measured at the turbocharger air compressor inlet.
As a partner of Caterpillar marine main engine for many years, EMAC is a professional power system solution provider. We provide global customers with one-stop power system sales solutions from system design to power system supply, from installation to commissioning, and from after-sales. program. With sales service support for spare parts supply, EMAC is your reliable powertrain partner for the most cost-effective and reliable system solutions.
Advantages of Caterpillar C8.7 Marine Main Engine
It is synchronized with Cummins’ advanced design and sophistiCaterpillared manufacturing, adapts to harsh working conditions, and has high-intensity and heavy-duty work capabilities.
The Holset wastegate valve makes the low speed performance more perfect and the power performance better.
Holset supercharger with integrated wastegate valve, low speed response and strong power.
Using forged steel camshaft and crankshaft, high-strength cylinder design, many parts are cast on the cylinder, with high rigidity, high pressure resistance, good reliability and longer service life.
The cylinder liner adopts a platform mesh honing design, which effectively prevents oil leakage with a perfect geometric structure, and adopts advanced technology such as new piston ring components and gasket crimping molding to reduce oil loss.
The cylinder block and cylinder head adopt integrated design to prevent the occurrence of engine water and oil leakage. The parts are 40% less than other similar engines, and the failure rate is greatly reduced.
Technical Specifications
Basic Introduction of Caterpillar C8.7 Marine Main Engine
| Engine Model: | C8.7 |
| Engine Type: | I-6, 4-Stroke-Cycle-Diesel |
| Displacement: | 8.71 L |
| Rated Speed: | 2300 RPM |
| Aspiration Method: | Turbocharged-Aftercooled |
| Emission Standard: | IMO II |
| Bore*Storke: | 117 mm (4.61 in)*135 mm (5.31 in) |
| Packing Size(L*W*H): | 1200 mm * 887 mm * 983 mm |
| Weight , Net Dry: | 1071 kg (2361 lb) |
| Lead Time: | 15-30 Working Days |
| Payment Terms: | T/T ,L/C |
Engine Model | Rated Speed | Aspiration | Fuel system type |
| C8.7 | 478 bkW (641 BHP) @ 2300 RPM | Supercharged-Turbocharged-Aftercooled | Common Rail |
| ——END—— | |||
General Engine Specifications of CAT C8.7 Marine Main Engine | |||
| Basic Engine Specifications | I-6, 4-Stroke-Cycle-Diesel | Governor | ECU |
| Displacement | 8.71 L (531.5 in³) | Fuel System Type | Common Rail |
| Rated Engine Speed | 2300 RPM | Length | 1200 mm (47.2 in) |
| High Idle Speed | 2530 RPM | Width | 887 mm (34.9 in) |
| Low Idle Speed (Programmable) | 600 RPM | Height | 983 mm (38.7 in) |
| Aspiration | Supercharged-Turbocharged-Aftercooled | Weight, Net Dry (Approx) | 1071 kg (2361 lb) |
| Bore | 117 mm (4.61 in) | Rotation (From Flywheel End) | Counterclockwise |
| Stroke | 135 mm (5.31 in) | Flywheel Housing/Flywheel | SAE No. 01M |
| Peak Torque | 2332 N.m @ 1700 RPM | Flywheel Teeth | 149 |
Tolerances of CAT C8.7 Marine Main Engine | |||
| Power | +/- 3 % | Exhaust Flow | +/- 6 % |
| Exhaust Stack Temperature | +/- 8 % | Specific Fuel Consumption | +/- 3 % |
| Inlet Air Flow | +/- 5 % | Heat Rejection | +/- 5 % |
| Intake Manifold Pressure | +/- 10 % | Fuel Rate | +/- 5 % |
Emission Compliance of CAT C8.7 Marine Main Engine | |||
| Recreational | EPA Tier 3 (E5 Cycle – Recreational Only) | Commercial | EU Stage IIIA |
| IMO II (EPA, GLSeeBG) | IMO II (GL, SeeBG) | ||
| Recreational Craft Directive (EU) RCD | CCNR Stage II Through Reciprocity with EU Stage IIIA | ||
| ——END—— | |||
System of CAT C8.7 Marine Main Engine | ||
| Air System | Combustion Air Inlet System | |
| Intake Combustion Air Flow | 29.8 m³/min (1052.4 cfm) | |
| Intake Combustion Air Temperature Up to | 45 °C (113 °F) | |
| Max. Allowable Intake Air Restriction | 5.0 kPa (20 in H2O) | |
| Engine Room Ventilation Air | ||
| Heat Rejection to Atmosphere | 20.2 kW (1149 BTU/min) @ 25°C (77°F) Ambient Temperature | |
| Fuel System | Fuel Flow Supply Line (Max) | 220 L/hr (58.1 gal/hr) |
| Fuel Flow Return Line (Max) | 125 L/hr (33.0 gal/hr) | |
| Fuel Rate at Rated Speed | 123.8 L/hr (32.7 gal/hr) | |
| Total Fuel Supply Restriction (Max) | 30 kPa (8.9 in Hg) (4.4 PSI) | |
| Fuel Restriction Across Priming Pump and Clean Filter | 15 kPa (4.4 in Hg) (2.2 PSI) | |
| Allowable Fuel Restriction of OEM Supplied Components | 15 kPa (4.4 in Hg) (2.2 PSI) | |
| Fuel Temperature Engine Inlet (Max) | 50 °C (122 °F) | |
| Fuel Return Line Restriction (Max) | 20 kPa (5.9 in Hg) (2.9 PSI) | |
| Fuel Supply/Return Connection | 3/4-16 SAE J514 (-8), 37 ° FLARE | |
| Minimum Fuel Supply Line Inside Diameter | SAE -10 (15.9 mm) (5/8 in) | |
| Electric Fuel Priming Pump Inlet/Outlet Connection | 7/8-14 SAE J1926-1 (No. 10) STOR | |
| Diesel Fuel Grade | US Diesel #2 / EN590 / Biodiesel 7 % Max. | |
| Exhaust System | Exhaust Gas Flow (Total) | 2048.3 kg/hr (4515.7 lb/hr) |
| Exhaust Stack Temperature | 504 °C (939 °F) | |
| Engine Exhaust Connection V-Band Clamp | 150 mm (5.91 in) | |
| Max. Allowable System Backpressure | 10 kPa (40.1 in H2O) | |
| Max. Allowable Static Weight on Turbine Outlet | 0 kg (0 lb) | |
| Max. Allowable Static Bending Moment on Turbine Outlet | 0 Nm (0 ft-lbs) | |
| Lube System | Sump Type | Center Sump |
| Sump Capacity | 34 L (9.0 gal) | |
| Oil Change Interval | 250 hr | |
| Max. Installation Angle (Fore-Aft) | 10 degrees | |
| Max. Operating Angle (Fore-Aft) | 20 degrees | |
| Max. Operating Angle (Athwart Ship) | 22.5 degrees | |
| Quality Diesel Engine Oil (Min) | CI-4 10W30 or 15W40 | |
| Starting System | Electrical Starting System (24V) | |
| Electrical Starting Motor | 24 VDC | |
| Cold Starting | 670 CCA [at 0 °C (32 °F) Ambient Temperature] | |
| Recommended Battery Capacity | 2 x 88 Ah, Series | |
| Electrical Starting System (12V) | ||
| Electrical Starting Motor | 12 VDC | |
| Cold Starting | 670 CCA [at 0 °C (32 °F) Ambient Temperature] | |
| Recommended Battery Capacity | 2 x 88 Ah, Parallel | |
| ——END—— | ||
Cooling System of CAT C8.7 Marine Main Engine | ||
| Jacket Water Cooling System | Cooling Water Refill Capacity | 41 L (10.8 gal) |
| Coolant Medium | Cat Extended Life Coolant (ELC) or Equal | |
| Expansion Tank Pressure Cap | 100 kPa (14.5 PSI) | |
| Raw Water Cooling System (SWAC) | Heat Rejection to Raw Water Cooling System | 197kW (209bkW) |
| Flow Raw Water Pump 442-7488 – Max | 180L/Min (209bkW) | |
| Flow Raw Water Pump 442-7488 – Min | 39.6 gal/min (280HP) | |
| Raw Water Pump Maximum Inlet Restriction | 2.0 m (6.6 ft) H2O | |
| Raw Water Temperature Engine Out to Gear Oil Cooler (Max) | 42.6°C (209bkW) | |
| Raw Water Temperature From Gear Oil Cooler 448-9439 If Equipped (Max) | 108.7°F (280HP) | |
| Gear Oil Cooler 448-9439 Heat Rejection Capability | 11.2 kW (636.9 BTU/min) | |
| Raw Water Connection Engine Inlet | 50.8 mm (2.00 inch) SAE J1231 Hose Connection | |
| Raw Water Connection Engine Outlet | 45 mm (1.77 inch) SAE J1231 Hose Connection | |
| Sea Water Strainer Mesh Hole Diameter (Max) | 1.6 mm (0.063 in) | |
| ——END—— | ||
Standard of CAT C8.7 Marine Main Engine | |||
| Air intake system | 1. Electronically Controlled Belt-Driven Supercharger | Fuel System | 1. High Pressure Common Rail Fuel System |
| 2. Air Filter/Fume Treatment Unit (Closed System) | 2. High Pressure Fuel System with Integral Low Pressure Fuel Transfer Pump | ||
| 3. Water Jacket Water-Cooled Turbocharger | 3. Remote Mounted Primary Fuel Filter with Integrated Electric Priming Pump | ||
| 4. Aftercooler Condensate Drain | 4. Rear Mounted Secondary Fuel Filter for Left and Right Service | ||
| Control System | 1. Cold Mode Start Strategy | cooling system | 1. Gear Driven Bronze Impeller Seawater Pump for Hex Cooled Engines Only |
| 2. Pwm Auxiliary Throttle | 2. Sea Water After Cooling | ||
| 3. Cold Mode Start Strategy | 3. Belt Driven Jacket Pump | ||
| 4. Electronic Diagnostics and Troubleshooting | 4. Jw Heat Exchanger – Corrosion Resistant Shell and Tube | ||
| 5. Engine and Transmission Monitoring (Temperature, Pressure) | 5. Fuel Cooler | ||
| 6. Electronic Air-Fuel Ratio Control | 6. Expansion Tank | ||
| 7. Engine Protection Mode for Extended Ambient Conditions | 7. Thermostat Housing (95 C Wide Open) | ||
| 8. Three Types of Throttle Inputs (Can, Pwm and 0-5V) | 8. 63 Mm Hose Connector Raw Water Pump Inlet | ||
| 9. 70-Pin Customer Connector | 9. 50 Mm Hose Connector Raw Water Pump Outlet | ||
| exhaust system | 1. Water-Cooled Exhaust Manifold and Turbocharger | install the system | 1. Electronic Engine Monitoring System Provides Engine Power Derating Strategy for Protection In Harsh Operating Conditions |
| 2. 90 Mm Id Round Flange Exhaust Port | 2. N/A | ||
| Lubrication system | 1. Crankcase Breathing Hole, Closed Crankcase Ventilation | conventional | 1. Front Belt and Shock Absorber Guards |
| 2. Rear Mounted Cartridge Oil Filter for Left and Right Side Service | 2. Hanging Lugs | ||
| 3. Oil Cooler | 3. Right or Left Service Option | ||
| 4. Center Sump Pan | 4. Top Front-to-Customer Wiring Connector and Service Tool Connector | ||
| 5. Gear Driven Oil Pump | 5. N/A | ||
| 6. Oil Dipstick, Right Service on Port, Left Service on Starboard | 6. N/A | ||
| ——END—— | |||
Optional Accessories of CAT C8.7 Marine Main Engine | ||||
| Air Intake System | 1. Air Intake Pre-Heater | Exhuast System | 1. Muffler & Bellows | |
| 2. Air Intake Pre-Filter | 2. Flame Trap | |||
| 3. Air Filter Alarm System | 3. Spark Arrestor Type Muffler & Bellows | |||
| 4. N/A | 4. DPF System | |||
| Fuel System | 1. Coarse Filter | Engine Auiliary Accessories | 1. Hydraulic Oil Pump | |
| 2. Fuel Pre-Heater | 2. Hydraulic Cluch | |||
| Starting System | 1. Manual Magnetic Dc Contactor | Control System | 1. Control System | |
| 2. Dual Ears Flywheel Housing | 2. Engine Protection System with Alarm System | |||
| 3. Spring Starter Motor | 3. Machanical Engine Control Lever Syste | |||
| 4. Air Starter Motor | 4. Electric Engine Control Lever System | |||
| 5. Hydraulic Starter Motor | 5. N/A | |||
| 6. Manual Magnetic Dc Contactor | 6. N/A | |||
| Power Output System | 1. Gear Reduction Gearbox | Cooling System | 1. Coolant Pre-Heater | |
| 2. Reverse Gear Box | 2. Jacket Water Heater | |||
| Lubricating System | 1. Oil Pre-Heater | Engine Mounting System | 1. Shock Absorber Pad | |
| ——END—— | ||||
Modifiable of CAT C8.7 Marine Main Engine | |||
| Air Intake System | 1. Installation Position of Air Filter | Starting System | 1. 12V Starter Motor For 12V Electric System |
| 2. Upgrade to Heavy-Duty Type Air Fitler | 2. Upgrading to Specified Brand and Speicifications of Starter Motor | ||
| Exhuast System | 1. Can Modify Installation Position and Direction of Turbocharger | Charging System | 1. 12V Charging Alternator for 12V Electric System |
| 2. Water-Cooled Exhuast Manifold | 2. Explosion-Proof Charging Alternator | ||
| 3. Water-Cooled Turbocharger | 3. Upgrading to Specified Brand and Speicifications of Charging Alternator | ||
| Cooling System | 1. Can Modify Engine Into Keel Cooling System | Engine Auiliary Accessories | 1. Additional Auxiliary Systems Can Be Added for Special Applications |
| Lubricating System | 1. Oil Pan Position | Power Output System | 1. Can Modify Size of Flywheel Housing and Flywheel |
| 2. Number of Dipstick | 2. Dual-Ear Flywheel Housing (for Twin-Starter System) | ||
| 3. Position of Dipstick Can Choose From 6 Positions | 3. Some of Models Can Modify Flywheel Housing Into Pto Integrated Type | ||
| 4. Can Modify Oil Filter to Be Remote Installation | 4. Engine Have Connecting Port of Ptos, That Able to Provide Power Output | ||
| Engine Mounting System | 1. Can Modify Engine Mouting Bracket | Fuel System | 1. Upgrade to Fuel Fitler That Integrated with Fuel Transfer Pump and Fuel Pre-Hearter |
| ——END—— | |||
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.
Engine Sale Manual
Installation Drawing
Installation Manual
Operation Manual
Parts Catalogue
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