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MAN Energy Solutions
6L70MC-C8
The MAN 6L70MC-C8 is a six‑cylinder, low‑speed two‑stroke main engine delivering up to 37,380 kW at 91 rpm, designed for direct‑drive propulsion on large commercial vessels.
37380.0 kW
Power
Engine Specifications
6
Cylinders
700 mm
Bore
2268 mm
Stroke
37,380 kW
MCR Power
91.0 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
6 Zylinder, L=Long-Stroke, 70=700 mm, MC-C8. 700 mm Bohrung, 2.268 mm Hub.
Background
6L70MC-C8, Long-Stroke-Großmotor. Höhere Drehzahl als S70. Mechanisch.
Calculated metrics
Stroke To Bore Ratio
3.24
Inspector checklist
Laufzeug & Tribologie
- 700 mm, S/B 3.24.
- Kolbenringe.
- Kreuzkopf: Geringere Seitenkräfte als S70.
Steuerung
- Nockenwelle: Höhere Drehzahl.
- Einspritzpumpen.
- Auslassventil: Mehr Lastwechsel.
Kraftstoff
- Cat-Fines: Priorität.
- VLSFO.
Turbolader
- Turbolader (1-2 Stück).
Dichtungen
- Stopfbuchse: 700 mm.
- Auslassventil.
Logbook reference values
| Parameter | Expected | Deviation means |
|---|---|---|
| Abgastemperatur | Herstellerangabe | >20 °C → Timing |
Common Failure Modes
Auslassventil-Ermüdung
Symptoms: Sitzschaden
Causes: Höhere Drehzahl
Preventive: Kürzere Intervalle.
Plunger wear
Symptoms: Leistung
Causes: Cat-Fines
Preventive: Filtration.
Expert tips
- 💡 L70: Less frequent than S70 — when ordering spare parts, pay attention to L-specification.
Related components
Nockenwelle
Einspritzpumpen
Turbolader
Classification & regulatory
IMO Tier I/II. EEXI.
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
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
7S60MC-C8
7 cyl
· 39,550 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 #38216
· ✓ still in production