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Gamma Marine Auxiliary Engines

Fixed Speed 
1500 r/min

40.0 – 121.0 kw  |  53.6 – 162.2 bhp

Range
GW4M
GWT4M
GWT6M-2A
GWTAM6


Download the Engine Data Sheet

The Gamma marine auxiliary engine range is specifically designed as a marinized power generation engine suitable for use in unregulated emission territories.

It is durable, reliable and easy to maintain with oil and filter changes up to 250 hours dependant on operational conditions. It is designed for continuous operation in ambient temperatures up to 45°C (113°F) and cold start capability down to -25°C (-13°F).


Basic Engine Characteristics 

  • 4 cylinder naturally aspirated, or turbocharged
  • 6 cylinder turbocharged, or turbo intercooled
  • direct injection
  • raw water heat exchanger cooling circuit
  • compact gear driven sea water pump
  • low fuel consumption

Design Features

  • dual circuit seawater/fresh water heat exchanger cooling
    system
  • gear driven high efficiency sea water pump
  • jacketed high pressure fuel lines
  • high temperature exhaust shield (asbestos free /
    non-toxic)
  • insulated earth return electrics
  • additional paint finish for added protection
  • standard oil and fuel filters
  • 12V electric start (optional 24V)
  • anti clockwise rotation, looking on flywheel
  • SAE10' and 11.5' flywheel
  • SAE flywheel housing
  • cast-iron crankcase
  • self-vent fuel system
  • in-line fuel injection pump
  • electronic governing *
  • flywheel and gear ring
  • air cleaner
  • oil pressure sender/switch combination (VDO parameter)
  • water temperature sender/switch combination
    (VDO parameter)
  • spin-on lubricating oil filter
  • fuel filter/agglometerator
  • inlet and exhaust manifolds
  • operators handbook (English)

Full Engine Specifications:

Power Output 

GW4M GWT4M GWT6M-2A GWTAM6
1500* 1500* 1500* 1500*
Continuous Power kWm 42.0 67.4 94.4 128.4
bhp 56.3 90.3 126.5 172.1
Fuel Stop kWm 46.0 74.2 103.8 141.0
bhp 61.6 99.4 139.1 189.0

Fuel Consumption

GW4M GWT4M GWT6M-2A GWTAM6
Load 1500* 1500* 1500* 1500*
g/kWh 100% 224.7 223.7 224.8 224.2
l/h 100% 10.7 17.5 24.7 32.3

Technical Data

GW4M GWT4M GWT6M-2A GWTAM6
Type of fuel injection Direct Direct Direct Direct
Number of cylinders 4 4 6 6
Aspiration Natural Natural Natural Turbocharged & Intercooled
Direction of rotation looking on flywheel end Anti clockwise Anti clockwise Anti clockwise Anti clockwise
Compression ratio 16.5:1 17.5:1 17.5:1 17.5:1
Total cylinder capacity litre 3.99 3.99 5.99 5.99
in 3 243.3 243.3 365.2 365.2

BUY GENUINE LISTER PETTER SPARE PARTS

Your Lister Petter engine is precision engineered to give years of outstanding reliability and consistent performance in the most extreme temperatures and conditions.

SPARE PARTS