0120960 JOHNSON RING,Retaining

Basic Technical Data
Prime power...39.5W (53 hp)...46.5W (62.3 hp)Number of cylinders...4Cylinder arrangement...In-lineCycle...4 strokeInduction system...Naturally AspiratedBore...100 mm (3.937")Stroke...127 mm (5.00")Compression ratio...16:1Cubic capacity...3.99 litres (243.0 in3)Valves per cylinder...2Direction of rotation...Anti-clockwise viewed on flywheelFiring order...1, 3, 4, 2Total weight (wet)...449 kg (990 lbs) engine only including starter and generator.Cooling System
The coolant shown below is mandatory for use in all climates to ensure that adequate levels of corrosion inhibitor are present. It will give frost protection to -37°C. (-22°F)Coolant...50% inhibited ethylene glycol or 50% inhibited propylene glycol with 50% fresh clean waterFresh water flow...80 l/min (21 US galls/min). 97 l/min (25.6 US galls/min)Coolant pump speed and method of drive...1:1 Gear drivenSystem capacity...18 litres (4.8 US galls)Pressure cap setting...50 kPa (7 psi)Protection switch setting...96°C (205°F)Sea water pump type...Jabsco gear driven model 25.4 mm (1") full cam.Sea water suggested inlet hose diameter...32 mm (1.25")Sea cock...Full flow 25.4mm (1.00") max lift of seawater pump 2m...Full flow 38.1mm (1.25") max lift of seawater pump 4mStrainer...A raw water strainer mustbe included in the suction side of the circuit.Maximum sea water temperature...38°C (100°F)Sea water flow...73 l/min (19 US galls/min). 91 l/min (24 US galls/min)Fuel System
Recommended fuel specifications...BS2869 Class A2 ASTM D 975 Number 2D.Cetane number...45 minimum.Fuel injection pump...Stanadyne rotary and electric stop. (Energised to run).Fuel lift pump...AC Delco type LUDelivery/hour...89 l/hr (23.5 US galls/min) 98 l/hr (25.9 US galls/min)Pressure...30 kPa (4.4 PSI)Governor type...Mechanical Pipe size:* Supply - Outside diameter...7.9 mm (0.315")* Supply - Bore...6.53 mm (0.257")* Return - Outside diameter...6.3 mm (0.25")* Return - Bore...4.93 mm (0.194")Maximum lift pump lift...1.8 m (6 ft) to bottom of tank suction pipe.Maximum fuel lift pump depression at inlet...127 mm (5") HgFuel consumption at full power...9.4 l/hr (2.5 US galls/hr)...13.6 l/hr (3.6 US galls/hr)Air Intake
Combustion airflow...2.64 m3/min (93 ft3/min...3.19 m3/min (112 ft3/min)Maximum engine compartment air temperature...60°C (140°F)Maximum air temperature at engine inlet...52°C (126°F)Ventilation - maximum engine room depression...125mm H2O (5 in H2O)Suggested ventilation airflow including combustion air...18.6m3/min (657ft3/in)Minimum cross section of air duct (per engine)...200 cm2(31 sq ins) for hot climates....103 cm2(16 sq ins) for temperature climates.Exhaust
Exhaust gas flow...7.54 m3/min (266 ft3/min...9.09 m3/min (321 ft3/min)Maximum restriction measured within (305 mm) 12" outlet...10.2 kPa (3.0" Hg)Recommended pipe bore (wet exhaust)...76.2 mm (3.0")Recommended pipe bore (dry)...60 mm (2.36")Minimum rise from sea water level to exhaust outlet centreline...203 mm (8.0")Lubricating System
Recommended lubricating oil...AP1 CD/SE CCMC D4Sump capacity maximum...15 litres (4 US galls/min)Normal operating angles...25° from horizontal in any directionOil pressure, in operating speed range (steady state)...310 to 390 kPa (45 to 57 psi)Low oil pressure switch setting...83kPa (12 psi)Electrical System
Generator...Prestolite AS128 55A (24V) or 90A (12V)Starter type...Prestolite S115Number of teeth in flywheel...126Number of teeth on starter...10Cold Start Limits
Minimum cold start temperature (with aid)...-15°C (5°F)Batteries for min cold start...a qty of 2 12V 315 Amps to BS3911 or 2 off - 12V, 535 amps to SAE J5373054T
1500 rev/min...1800 rev/minBasic Technical Data
Prime power...68.5W (91.9 hp)...80.5W (108 hp)Number of cylinders...4Cylinder arrangement...In-lineCycle...4 strokeInduction system...TurbochargedBore...100 mm (3.937")Stroke...127 mm (5.00")Compression ratio...16:1Cubic capacity...3.99 litres (243 in3)Valves per cylinder...2Direction of rotation...Anti-clockwise viewed on flywheelFiring order...1, 3, 4, 2Total weight (wet)...456 kg (1005 lbs) engine only including starter and generator.Cooling System
The coolant shown below is mandatory for use in all climates to ensure that adequate levels of corrosion inhibitor are present. It will give frost protection to -37°C. (-22°F)Coolant...50% inhibited ethylene glycol or 50% inhibited propylene glycol with 50% fresh clean waterFresh water flow...80 l/min (21 US galls/min). 97 l/min (25.6 US galls/min)Coolant pump speed and method of drive...1:1 Gear drivenSystem capacity...18 litres (4.8 US galls)Pressure cap setting...50 kPa (7 psi)Protection switch setting...96°C (205°F)Sea water pump type...Jabsco gear driven model 25.4 mm (1") full cam.Sea water suggested inlet hose diameter...32 mm (1.25")Sea cock...Full flow 25.4mm (1.00") max lift of seawater pump 2m...Full flow 38.1mm (1.25") max lift of seawater pump 4mStrainer...A raw water strainer mustbe included in the suction side of the circuit.Maximum sea water temperature...38°C (100°F)Sea water flow...73 l/min (19 US galls/min). 91 l/min (24 US galls/min)Fuel System
Recommended fuel specifications...BS2869 Class A2 ASTM D 975 Number 2D.Cetane number...45 minimumFuel injection pump...Stanadyne rotary and electric stop. (Energised to run).Fuel lift pump...AC Delco type LUDelivery/hour...89 l/hr (23.5 US galls/hr). 98 l/hr (25.9 US galls/min)Pressure...30 kPa (4.4 PSI)Governor type...Mechanical Pipe size:* Supply - Outside diameter...7.9 mm (0.315")* Supply - Bore...6.53 mm (0.257")* Return - Outside diameter...6.3 mm (0.25")* Return - Bore...4.93 mm (0.194")Maximum lift pump lift...1.8 m (6 ft) to bottom of tank suction pipe.Maximum fuel lift pump depression at inlet...127 mm (5") HgFuel consumption at full power...17.1 l/hr (4.5 US galls/hr)...19.9 l/hr (5.3 US galls/hr)Air Intake
Combustion airflow...4.52 m3/min (159 ft3/min...5.85 m3/min (206 ft3/min)Maximum engine compartment air temperature...60°C (140°F)Maximum air temperature at engine inlet...52°C (126°F)Ventilation - maximum engine room depression...125mm H2O (5 in H2O)Suggested ventilation airflow including combustion air...31m3/min (1095ft3/min)Minimum cross section of air duct (per engine)...348 cm2(54 sq ins) for hot climates....174 cm2(27 sq ins) for temperature climates.Exhaust
Exhaust gas flow...13.1 m3/min (462 ft3/min...15.9 m3/min (561 ft3/min)Maximum restriction measured within (305 mm) 12" outlet...10.2 kPa (3.0" Hg)Recommended pipe bore (wet exhaust)...76.2 mm (3.0")Recommended pipe bore (dry)...60 mm (2.36")Minimum rise from sea water level to exhaust outlet centreline...203 mm (8.0")Lubricating System
Recommended lubricating oil...AP1 CD/SE CCMC D4Sump capacity maximum...15 litres (4 US galls/min)Normal operating angles...25° from horizontal in any directionOil pressure, in operating speed range (steady state)...310 to 390 kPa (45 to 57 psi)Low oil pressure switch setting...83kPa (12 psi)Electrical System
Generator...Prestolite AS128 55A (12V) or 90A (24V)Starter type...Prestolite S115Number of teeth in flywheel...126Number of teeth on starter...10Cold Start Limits
Minimum cold start temperature (with aid)...-15°C (5°F)Batteries for min cold start...a qty of 2 off 12V 315 Amps to BS3911 or 2 off - 12V, 535 amps to SAE J5373056T
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