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Beta Marine Engine – Beta 85T

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The Beta Marine Engine – Beta 85T is a turbocharged 4‑cylinder diesel engine delivering approximately 85 hp (63.0 kW) at 2,800 RPM. With a displacement of 3,331 cc and weighing around 359 kg, this engine is designed for larger sailboats in the 46–50 ft range, offering reliable and efficient performance.

Key Features

  • 4‑cylinder turbocharged Kubota-based diesel engine.
  • Displacement: 3,331 cc; bore & stroke: 94 × 120 mm.
  • Heat exchanger cooling system with header tank and water-cooled exhaust manifold.
  • Mechanical fuel lift pump, fuel and oil filtration systems.
  • Flywheel housing and drive plate with heavy inertia ring for smooth operation at low RPM.
  • Special quiet air intake filter.
  • Standard 70 A 12 V alternator (upgradeable options available).
  • ABV control panel with tachometer, hour meter, alarms, and 3m interconnection cable.
  • Heavy-duty engine feet and flexible mountings.
  • Transmission options: TM345, PRM 280, PRM 500, ZF, Technodrive, Bobtail, with reduction ratios from 2:1 to 2.94:1.

Technical Specifications: Beta 85T Marine Engine

Power Output 85 hp (63.0 kW) @ 2,800 RPM
Cylinders 4 inline
Displacement 3,331 cc
Bore & Stroke 94 × 120 mm
Cooling System Heat exchanger with header tank and water-cooled exhaust manifold
Fuel System Mechanical fuel lift pump, fuel and oil filtration
Alternator 70 A 12 V (upgradeable options available)
Transmission TM345 standard; PRM 280, PRM 500, ZF, Technodrive, Bobtail options available
Dry Weight ≈ 359 kg (792 lb)
Start System 12 V electric starter
Control Panel ABV with tachometer, hour meter, alarms, and 3m interconnection cable

Operating Conditions

  • Ambient Temp: Up to 45 °C
  • Fuel Type: EN 590 marine diesel
  • Installation Angles: ≤ 15° static / ≤ 25° heeling

Applications

The Beta 85T Marine Engine is ideally suited for:

  • Sailboats 46–50 ft (≈17–22 tons displacement)
  • Classic yachts, tenders, and cruising vessels
  • Repower and retrofit installations in large keelboats

kW 63.0
RPM 2800
Duty Large sailboat propulsion
Emissions RCD II compliant, EPA Tier III

Power 85 hp @ 2,800 rpm

Aspiration Turbocharged

Cylinders 4

Displacement 3331 cc

Weight 359 kg

Propeller AIA*

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Description

The Beta Marine Engine – Beta 85T is a turbocharged 4‑cylinder diesel engine delivering approximately 85 hp (63.0 kW) at 2,800 RPM. With a displacement of 3,331 cc and weighing around 359 kg, this engine is designed for larger sailboats in the 46–50 ft range, offering reliable and efficient performance.

Key Features

  • 4‑cylinder turbocharged Kubota-based diesel engine.
  • Displacement: 3,331 cc; bore & stroke: 94 × 120 mm.
  • Heat exchanger cooling system with header tank and water-cooled exhaust manifold.
  • Mechanical fuel lift pump, fuel and oil filtration systems.
  • Flywheel housing and drive plate with heavy inertia ring for smooth operation at low RPM.
  • Special quiet air intake filter.
  • Standard 70 A 12 V alternator (upgradeable options available).
  • ABV control panel with tachometer, hour meter, alarms, and 3m interconnection cable.
  • Heavy-duty engine feet and flexible mountings.
  • Transmission options: TM345, PRM 280, PRM 500, ZF, Technodrive, Bobtail, with reduction ratios from 2:1 to 2.94:1.

Technical Specifications: Beta 85T Marine Engine

Power Output 85 hp (63.0 kW) @ 2,800 RPM
Cylinders 4 inline
Displacement 3,331 cc
Bore & Stroke 94 × 120 mm
Cooling System Heat exchanger with header tank and water-cooled exhaust manifold
Fuel System Mechanical fuel lift pump, fuel and oil filtration
Alternator 70 A 12 V (upgradeable options available)
Transmission TM345 standard; PRM 280, PRM 500, ZF, Technodrive, Bobtail options available
Dry Weight ≈ 359 kg (792 lb)
Start System 12 V electric starter
Control Panel ABV with tachometer, hour meter, alarms, and 3m interconnection cable

Operating Conditions

  • Ambient Temp: Up to 45 °C
  • Fuel Type: EN 590 marine diesel
  • Installation Angles: ≤ 15° static / ≤ 25° heeling

Applications

The Beta 85T Marine Engine is ideally suited for:

  • Sailboats 46–50 ft (≈17–22 tons displacement)
  • Classic yachts, tenders, and cruising vessels
  • Repower and retrofit installations in large keelboats

kW 63.0
RPM 2800
Duty Large sailboat propulsion
Emissions RCD II compliant, EPA Tier III

Brand

Beta Marine

Beta Marine, logo

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