USED CAT G3306

(Natural Gas Industrial Engine)
Manufacturer: Caterpillar
Engine Model: G3306
Engine Type: Inline 6-cylinder, 4-stroke
Fuel Type: Natural Gas (field gas capable with proper setup)
Aspiration: Naturally aspirated or turbocharged (configuration dependent)
Application: Industrial / oilfield service
Duty Rating: Continuous
(Final output depends on aspiration & governor speed)
Rated Power: 170 – 230 HP
Rated Speed: 1,200 – 1,800 RPM
Peak Torque: ~650 – 750 lb-ft
Torque Rise: ~25%
Common ratings:
185 HP @ 1,200 RPM
210 HP @ 1,800 RPM
230 HP (turbocharged variants)
Configuration: Inline 6
Displacement: 638 in³ (10.5 L)
Bore: 4.75 in (121 mm)
Stroke: 5.00 in (127 mm)
Compression Ratio: ~10.5:1 (gas)
Rotation: Counterclockwise (flywheel end, typical)
Fuel System: Carbureted natural gas
Ignition: Magneto or electronic ignition
Governor: Mechanical or electronic (Woodward commonly used)
Cooling: Jacket water cooled
Lubrication: Full pressure
Oil Capacity: ~7 – 8 gallons
Oil Filtration: Full-flow spin-on filters