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MarineDiesel VGT550

MarineDiesel VGT550

Product catalog summary
Overview: The MarineDiesel VGT550 is a high-performance marine engine designed for light, very high-speed vessels. It features a 6.6L V8 configuration, offering 410 kW (550 bhp) at 3600 rpm. The engine is compact and lightweight, ensuring durability and serviceability.
Specifications:
  • Model: MD-VGT32
  • Number of Cylinders: 8
  • Displacement: 6.6L
  • Bore x Stroke: 103 x 98 mm
  • Compression Ratio: 16:18:1
  • Valves per Cylinder: 4
  • Firing Order: 1-2-7-8-4-5-6-3
  • Combustion System: DI Common Rail
  • Engine Type: V8
  • Aspiration: Variable Geometry Turbo
  • Charge Air Cooling: Air to Water
Physical Data:
  • Length: 779 mm
  • Width: 825 mm
  • Height: 973 mm
  • Weight (dry): 510 kg
Air System:
  • Max Intake Restriction: 6 kPa
  • Engine Air Flow: 30 m³/min
  • Recommended Air Intake Pipe Diameter: 100 mm
  • Minimum Intake Air per Engine: 1400 cm²
  • Max Engine Bay Temperature vs Ambient: 15°C
Emission Standards: Complies with RCD, IMO, EPA, Tier 3, and CE3.
Cooling System:
  • Type: Closed Cooling
  • Coolant Flow: 304 L/min
  • Raw Water Pump Flow: 150 L/min
  • Thermostat Start to Open: 70°C
  • Thermostat Fully Open: 78°C
  • Engine Coolant Capacity: 18 L
Fuel System:
  • Fuel Injection Pump: Bosch Common Rail
  • Governor Regulation: 1%
  • Governor Type: Electronic
  • Max Fuel Transfer Pump Suction Distance: 2.5 m
  • Fuel Filter Micron Size: 10
Lubrication System:
  • Oil Pressure at 2000 rpm: 30-45 psi
  • Oil Pressure at Low Idle: 12 psi
  • Max Oil Temperature: 120°C
Exhaust System:
  • Exhaust Flow: 70 m³/min
  • Max Exhaust Temperature: 750°C
  • Max Allowable Exhaust Backpressure: 7.5 kPa
  • Exhaust Hose ID: 127 mm
Electrical System:
  • Recommended Battery Capacity: 1050 CCA (12V system)
  • Max Allowable Start Circuit Resistance: 0.001 ohm (12V system)
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Catalog excerpts

MarineDiesel VGT550-1

MarineDiesel VGT550 410 kW (550 bhp) @3600 rpm All MarineDiesel VGT Common-Rail engines are based on the 6.6L V8 configuration and are designed to be as compact and light weight as possible while maintaining durability and serviceability. The VGT550 is intended for light, very high speed vessels. Laptop based diagnostics tool is available for all VGT and TSC engines. J1939 and NMEA2000 CAN communication. General Data Model. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . MD-VGT32 Number of cyl. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 Displacement. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6.6L Bore X stroke. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 103 X 98 mm Compression ratio. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16:18:1 Valves per cyl. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 Firing order . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2-7-8-4-5-6-3 Combustion system. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . DI Common rail Engine type. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . V8 Aspiration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Variable geometry turbo Charge air cooling. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Air to water Max crankcase press kPa. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.5 Physical Data Length, mm. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Width, mm. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Height, mm. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Weight dry, kg . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . MD270. Product sheet ©, version 1.0 2023

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