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MAN Energy Solutions
14K90MC-C8
The MAN 14K90MC-C8 is a low‑speed, 14‑cylinder two‑stroke diesel engine delivering up to 132 MW at 76 rpm; its camshaft‑controlled fuel injection and constant‑pressure turbocharging give high efficiency and proven reliability for very large ocean‑going vessels.
132300.0 kW
Power
Engine Specifications
14
Cylinders
900 mm
Bore
2500 mm
Stroke
132,300 kW
MCR Power
76.0 rpm
MCR RPM
2-stroke
Stroke Type
Family: MAN B&W MC/MC-C
· Tier: Tier II
· Fuel: HFO, VLSFO, MDO
Inspector Detail
▸
Designation decoded
14 stands for 14 cylinders, K for Short-Stroke, 90 for 900 mm bore, MC-C for the MAN B&W MC-Compact series, 8 for Mark 8.
Background
The K90MC-C8 with 14 cylinders is a theoretical maximum configuration of the 90 bore class. 14 cylinders on a 2-stroke engine are extremely unusual and exist only as a catalogue variant or for special projects. The engine length and structural requirements exceed all standard configurations.
Calculated metrics
Stroke To Bore Ratio
2.778
Inspector checklist
Running Gear & Tribology
- Cylinder liners: 900 mm — systematic wear measurement across all 14 cylinders, group comparisons (1-5, 6-10, 11-14)
- Piston rings: compare ring wear across 14 cylinders
- Cylinder lubrication: pressure uniformity across the entire distribution line is critical with 14 cylinders
Crosshead & Stuffing Box
- Crosshead bearings: 14 bearings — monitor in groups
- Stuffing box: drainage on 14 cylinders
- Piston rod: deflection at all 14 throws
Control System & Hydraulics
- Camshaft drive: most extreme configuration — possibly a split camshaft
- Exhaust valves and fuel injection pumps on all 14 cylinders
- Timing uniformity
Scavenge Air & Exhaust System
- Scavenge air box: walk-in — all 14 ports
- Turbocharger: 4 TC — inspect all
- Exhaust gas economiser
Structural Integrity
- Foundation: most extreme configuration — engine length may require a segmented foundation
- Alignment: 14 throws + 15 main bearings — highest complexity
- Double bottom structure under continuous load
Logbook reference values
| Parameter | Expected | Deviation means |
|---|---|---|
| Exhaust gas temperature per cylinder | 330-400 °C at MCR | spread >15 °C → investigate, note group effects |
| Scavenge air pressure | 2.8-3.5 bar | drop → TC |
| Pmax | ±3 bar cylinder balance | deviation → timing |
| Crosshead bearing temperature | 55-65 °C | rise → investigate immediately |
| Cooling water temperature | 80-85 °C | check single-cylinder deviation |
Common Failure Modes
Loss of alignment due to extreme engine length
Symptoms: deflection outside tolerance, main bearing wear, foundation cracking
Causes: 14 cylinders produce the most extreme engine length, hull elasticity exceeds standard calculations, loading condition change effects
Preventive: deflection readings at every docking under defined conditions, continuous foundation monitoring
Cylinder oil pressure drop across 14 cylinders
Symptoms: differing wear rates, localised dry running at aft cylinders
Causes: pressure drop in the long distribution line, insufficient sizing
Preventive: measure oil pressure at a minimum of 4 positions, add a booster pump if required
Camshaft drive overload
Symptoms: timing drift, chain elongation
Causes: 14 cylinders = most extreme drive length, possible split camshaft with its own issues
Preventive: inspect chain case every 8,000 operating hours
Expert tips
- 💡 14-cylinder 2-stroke engines are special configurations at the limit of what is technically feasible — every installation is unique, and experience from other installations is limited
- 💡 For 14×K90: engine length can exceed 25+ metres — foundation elasticity is a major structural issue that must be monitored in cooperation with the classification society
- 💡 Major overhaul on 14 cylinders: the sheer number of components to inspect (14 pistons, 14 valves, 15 main bearings, 14 crossheads) requires a dedicated project management team
Related components
Turbochargers (4 TC)
Foundation bolts and double bottom
Crankshaft main bearings (15 bearings)
Chocking
Shaft line and thrust bearing
Torsional vibration damper
Auxiliary blowers
Classification & regulatory
IMO Tier I. EGR/SCR for Tier II. EEDI. MARPOL Annex VI — scrubber or VLSFO.
Reference content for inspector orientation. Always verify against manufacturer's manual, latest service letters and class society requirements.
Other Cylinder Configurations 50
5L35MC-C8
5 cyl
· 6,450 kW
5L42MC-C8
5 cyl
· 10,100 kW
5L60MC-C8
5 cyl
· 21,000 kW
5L70MC-C8
5 cyl
· 31,150 kW
5L80MC-C8
5 cyl
· 42,000 kW
5S26MC-C8
5 cyl
· 3,700 kW
5S35MC-C8
5 cyl
· 7,650 kW
5S42MC-C8
5 cyl
· 12,950 kW
5S46MC-C8
5 cyl
· 15,500 kW
5S50MC-C8
5 cyl
· 18,650 kW
5S60MC-C8
5 cyl
· 28,250 kW
5S65MC-C8
5 cyl
· 35,000 kW
5S70MC-C8
5 cyl
· 40,400 kW
5S80MC-C8
5 cyl
· 51,000 kW
5S90MC-C8
5 cyl
· 64,350 kW
6K80MC-C8
6 cyl
· 43,500 kW
6K90MC-C6
6 cyl
· 30,780 kW
6K90MC-C8
6 cyl
· 56,700 kW
6K98MC-C8
6 cyl
· 85,020 kW
6L35MC-C8
6 cyl
· 7,740 kW
6L42MC-C8
6 cyl
· 12,120 kW
6L60MC-C8
6 cyl
· 25,200 kW
6L70MC-C8
6 cyl
· 37,380 kW
6L80MC-C8
6 cyl
· 50,400 kW
6S26MC-C8
6 cyl
· 4,440 kW
6S35MC-C8
6 cyl
· 9,180 kW
6S42MC-C8
6 cyl
· 15,540 kW
6S46MC-C8
6 cyl
· 18,600 kW
6S50MC-C8
6 cyl
· 22,380 kW
6S50MC-C8.2
6 cyl
· 9,960 kW
6S60MC-C8
6 cyl
· 33,900 kW
6S65MC-C8
6 cyl
· 42,000 kW
6S65MC-C8.2
6 cyl
· 16,440 kW
6S70MC-C8
6 cyl
· 48,480 kW
6S80MC-C8
6 cyl
· 61,200 kW
6S90MC-C8
6 cyl
· 77,220 kW
7K80MC-C6
7 cyl
· 28,980 kW
7K80MC-C8
7 cyl
· 50,750 kW
7K90MC-C8
7 cyl
· 66,150 kW
7K98MC-C7.1
7 cyl
· 40,040 kW
7K98MC-C8
7 cyl
· 99,190 kW
7L35MC-C8
7 cyl
· 9,030 kW
7L42MC-C8
7 cyl
· 14,140 kW
7L60MC-C8
7 cyl
· 29,400 kW
7L70MC-C8
7 cyl
· 43,610 kW
7L80MC-C8
7 cyl
· 58,800 kW
7S35MC-C8
7 cyl
· 10,710 kW
7S42MC-C8
7 cyl
· 18,130 kW
7S46MC-C8
7 cyl
· 21,700 kW
7S50MC-C8
7 cyl
· 26,110 kW
Components & Design
Component data being added…
Technical Data
unified from engine model
True
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Suppliers & Spare Parts
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Maritime Network →Manuals
-
operating
MAN B&W MC/MC-C Engine Operating Manual (OM-MC-C)MAN Energy Solutions
-
maintenance
MAN B&W MC/MC-C Maintenance Manual (MM-MC-C)MAN Energy Solutions
-
spare_parts
MAN B&W MC/MC-C Illustrated Parts Catalogue (IPC-MC-C)MAN Energy Solutions
-
project_guide
MAN B&W Project Guide MC/MC-C (PG-MC-C)MAN Energy Solutions
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Equipment Model #38279
· ✓ still in production