8G80ME-C9.5
The Hyundai 8G80ME-C9.5 is a low‑speed, 8‑cylinder inline two‑stroke marine diesel engine with electronic MAN‑licensed control, designed for main propulsion on large commercial vessels.
Engine Specifications
Inspector Detail
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Common issues
- Excessive cylinder liner wear due to incorrect fuel injection timing
- Scavenge air receiver corrosion caused by water ingress
- Main bearing damage resulting from inadequate lubrication
Inspection checklist
- Cylinder head and valve condition
- Piston ring and skirt wear
- Fuel injection system performance
- Lubrication oil condition and level
- Cooling system leaks and corrosion
- Exhaust valve and turbocharger condition
- Crankshaft deflection and main bearing clearance
- Scavenge air system performance and leaks
Service intervals
| Cylinder liner replacement | 12000-15000 hours |
| Piston ring replacement | 6000-8000 hours |
| Main bearing replacement | 20000-25000 hours |
| Fuel injection nozzle replacement | 4000-6000 hours |
| Lubrication oil change | 400-600 hours |
Typical wear limits
| Cylinder liner diameter | 0.5-1.0 mm overbore |
| Piston ring gap | 0.5-1.5 mm |
| Main bearing clearance | 0.1-0.3 mm |
Ranges are typical for this design class. Always confirm against the manufacturer documentation for your serial number.
Critical spares
- Cylinder liners
- Piston rings
- Main bearings
- Fuel injection nozzles
- Exhaust valves
- Turbocharger blades
- Crankshaft seals
Safety
- Risk of scalding from hot surfaces and fluids
- Potential for explosion due to fuel leaks or ignition sources
- Asphyxiation hazard from exhaust gases or lack of ventilation
Class survey
The class surveyor will typically check the engine's performance, inspect the cylinder heads and valves, and verify the proper functioning of the fuel injection and lubrication systems
Components & Design
Component data being added…
Technical Data
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