Tough and durable, built on the industry-standard G3400 platform bring maximum uptime and low operating cost to your operation. G3408C engines meet the most demanding continuous duty gas compression applications with virtually no unscheduled downtime.Ideal applications for G3408C engines include gas lift, gas gathering, and wellhead gas compression. Cat G3408C gas engine. Ratings: 317 bkW (425 bhp) @ 1800 rpm are NSPS site compliant capable with customer-provided aftertreatment or available for non-regulated areas.

G3408C Low Emissions Gas Petroleum Engine  Gas Compression Engines

Features

  • Engine Design

    • Improved reliability and durability • Ability to burn a wide spectrum of gaseous fuels • Robust diesel strength design prolongs life and lowers owning and operating costs• Broad operating speed range

  • Emissions

    Meets U.S. EPA Spark Ignited Stationary NSPS Emissions for 2007/08

  • Lean Burn Engine Technology

    Lean-burn engines operate with large amounts of excess air. The excess air absorbs heat during combustion reducing the combustion temperature and pressure, greatly reducing levels of NOx. Leanburn design also provides longer component life and excellent fuel consumption.

  • Cat® Electronic Ignition System (EIS)

    Detonation sensitive timing protects the engine against detonation damage. Higher voltage and longer spark duration mean easier starts, fewer misfires, and smoother operation. Diagnostic codes help pinpoint cylinder and component of interest. Spark plug maintenance codes identify spark plug condition

  • Ease of Operation

    • Deep sump oil pan has a larger capacity for normal 750-hour oil change intervals• Side covers on block allow for inspection of internal components

  • Full Range of Attachments

    Large variety of factory-installed engine attachments reduces packaging time

  • Testing

    Every engine is full-load tested to ensure proper engine performance.

  • Gas Engine Rating Pro

    GERP is a web-based program designed to provide site performance capabilities for Cat natural gas engines for the gas compression industry. GERP provides engine data for your site’s altitude, ambient temperature, fuel, engine coolant heat rejection, performance data, installation drawings, spec sheets, and pump curves.

  • Product Support Offered Through Global Cat Dealer

    More than 2,200 dealer outletsCaterpillar factory-trained dealer technicians service every aspect of your petroleum engineCat parts and labor warrantyPreventive maintenance agreements available for repair-before-failure optionsS•O•SSM program matches your oil and coolant samples against Caterpillar set standards to determine:- Internal engine component condition- Presence of unwanted fluids- Presence of combustion by-products- Site-specific oil change interval

  • Over 80 Years of Engine Manufacturing Experience

    Over 60 years of natural gas engine productionOwnership of these manufacturing processes enables Caterpillar to produce high quality, dependable products.- Cast engine blocks, heads, cylinder liners, and flywheel housings- Machine critical components- Assemble complete engine

  • Web Site

    For all your petroleum power requirements, visit www.cat.com/oilandgas.

Specifications

Units for specifications

Engine Specifications

Maximum Rating 425.0 BHP 317.0 bkW
Rated Speed 1800 rpm 1800 rpm
Emissions Rich Burn: EPA NSPS Site Compliant Capable with Caterpillar Supplied AFRC and Customer Supplied Aftertreatment
Minimum Rating 425.0 BHP 317.0 bkW
Compression Ratio 8.5:1
Aspiration Turbocharged-Aftercooled
Rotation from Flywheel End Counterclockwise
Flywheel and Flywheel Housing SAE No. 0
Flywheel Teeth 136
Oil Change Interval 750 hours
Ignition, Protection Cat EIS
Stroke 6.0 in 152.0 mm
Bore 5.4 in 137.0 mm
Displacement 1099.0 in³ 18.0 l
Length 69.1 in 1756 mm
Width 61.5 in 1563 mm
Height 69.2 in 1758 mm
Weight - Dry 2041 lb 4500 kg

Capacity for Liquids

Cooling System 14.5 gal (US) 54.9 l
Lube Oil System - Refill 39.0 gal (US) 147.63 l

Standard Equipment

Air Inlet System

  • Air cleaner — single element with service indicator

Control System

  • Electronic governor
  • Air/fuel ratio control

Cooling System

  • Thermostats and housing
  • Jacket water pump
  • Aftercooler water pump
  • Aftercooler core

Exhaust System

  • Watercooled exhaust manifolds
  • Dry exhaust elbow

Flywheel & Flywheel Housing

  • SAE No. 0 flywheel
  • SAE No. 0 flywheel housing
  • SAE standard rotation

Fuel System

  • Gas pressure regulator (1.5 to 5 psi gas supply required)
  • Natural gas carburetor

Ignition System

  • Cat Electronic Ignition System (EIS) with detonation sensitive timing

Instrumentation

  • Service meter

Lube System

  • Crankcase breather — top mounted
  • Oil cooler
  • Oil filter — RH
  • Oil pan — deep sump
  • Oil filler — RH in valve cover and RH dipstick

Mounting System

  • Engine supports

Protection System

  • Detonation sensitive timing control
  • Shutoff

General

  • Paint — Cat yellow
  • Crankshaft vibration damper and pulleys
  • Lifting eyes
  • Cylinder block inspection covers

Optional Equipment

Air Inlet System

  • Air cleaner — two-stage
  • Air inlet adapter
  • Precleaner
  • Air cleaner rain cap

Charging System

  • Battery chargers
  • Charging alternators
  • Ammeter gauge
  • Ammeter gauge and wiring
  • Control mounting

Cooling System

  • Radiators
  • Blower fan and fan drives for customer suppliedradiators
  • Expansion tank
  • Heat exchangers

Exhaust System

  • Flexible fittings
  • Elbows
  • Flanges
  • Rain caps
  • Mufflers
  • Exhaust manifold — instrument holes at each port

Fuel System

  • Dual gas regulator
  • Carburetor kits
  • Fuel filter

Ignition System

  • CSA ignition
  • Ignition ground wiring harness
  • Power supply

Instrumentation

  • Alarm module
  • Gauges and instrument panels

Mounting System

  • Vibration isolators

Power Take-offs

  • Auxiliary drive pulleys
  • Enclosed clutch and clutch support
  • Front stub shaft
  • Flywheel stub shaft
  • Pulley removal

Protection System

  • Gas valves
  • Status control box interconnect wiring harness

Starting System

  • Air starting motor
  • Air pressure regulator
  • Air silencer
  • Electric start control
  • Electric starting motors — single 24V
  • Starting aids
  • Battery sets — (24V dry), cables, and rack

General

  • Special paint
G3408C Low Emissions Gas Petroleum Engine  Gas Compression Engines

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