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Thornycroft TK-40

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Thornycroft TK-40 Four Cylinder 43hp 2179cc Naturally Aspirated





Propulsion Type



THORNYCROFT enjoys a worldwide reputation as a leading supplier of quality marine diesel engines and generators which are individually marinised in the UK to ensure the highest quality and guarantee the very best in performance.

All of Thornycroft's Seagoing Engines are specially developed for saltwater use, fitted with indirect heat exchanger cooling and a wet exhaust system as standard. Dry manifold exhaust systems are also available for special applications upon request.

Technical Specifications...

  • Type: Diesel 4 Stroke
  • No of cylinders: 4, in line
  • Intake system: Naturally Aspirated
  • Bore x Stoke: 87mm x 92.4mm
  • Total Displacement: 2179 cc
  • Intermittent power: 43 bhp @ 2600 r/min
  • Continuous power: (ISO 8665) 30.4 kW@ 2600 r/min
  • Injection System: Mechanical and indirect
  • Starter Motor: 12V
  • Alternator: 75A, 12V
  • Max Operating Angle: 30’ intermittent / 25’ continuous
  • Rotation (viewed from flywheel): Counter clockwise
  • Cooling System: Sea water heat exchanger
  • Dry Weight without gearbox: 256 kg
  • Seawater inlet hose diameter: 27 mm
  • Fuel feed hose diameter: 8 mm
  • Fuel return hose diameter: 5 mm
  • Exhaust hose diameter: 50mm
  • Emission Compliance: EU RCD2

Engine Control Panel...

Standard – TK1

  • Tachometer
  • Hour recorder
  • Keyswitch
  • Low Battery Alarm
  • High Engine Temp
  • Low Oil Pressure

Deluxe Panel - TK2

  • Tachometer
  • Hour recorder
  • Keyswitch
  • Voltmeter
  • Temperature Gauge
  • Oil Pressure Gauge

Scope of Supply...

Standard Equipment

  • Standard Engine Control Panel TK1
  • 4-metre extension loom
  • Anti-Vibration Mounts
  • Sump oil drain pump
  • Water trap within fuel filter
  • Single Side Servicing
  • Gear driven Water pump
  • Owner’s Manual

Optional Equipment

  • Deluxe Control Panel TK2
  • Additional Alternators
  • Deck Wash Pump
  • Hydraulic Pumps
  • Front Power Take off
  • Hot Water connections
  • Dry exhaust / Keel Cooling (workboat only)
  • Water inlet system
  • Exhaust Systems
  • Fuel intake systems

Thornycroft - TK-40 Specification Sheet