Wellhead compression applications require reliability and durability not found in every natural gas engine. For dependable operations and world class support, you need the Cummins GTA8.3SLB – an emission compliant, high-performance natural gas engine that shares the proven heritage of the Cummins C Series diesel engines and many of the same heavy-duty components. You can depend on the GTA8.3SLB to stay emissions compliant, keep maintenance costs down and the gas flowing. Every day.
General Specifications
Inline 6-Cylinder, 4-Cycle, Natural Gas
| Bore | 4.49 in (114 mm) |
| Stroke | 5.32 in (135 mm) |
| Displacement | 8.3 L (505 cubic in) |
| Engine Power* | 175 hp (130 kW) |
| Compression ratio | 8.5:1 |
| Aspiration | Turbocharged and aftercooled |
| Exhaust Type | Dry manifold |
| Weight** | 1650 lb (748 kg) |
| Lube oil capacity | 8.5 gal (32.0 L) |
| Rotation | Counterclockwise |
* Rating dependent
** Weight is approximate and varies with options.
Engine Technical Data
| Model | | GTA8.3SLB |
| Curve Number | | FR-93002 (2) |
| Exhaust Type | | Dry |
Output Power (1)
100%
75% |
HP (kW)
HP (kW) |
175 (130)
131 (98) |
Engine Speed
100%
Max Turn Down |
RPM
RPM |
1800
1350 |
| Aftercooler Water Temperature | °F (°C) | 130 (54.4) |
| Compression Ratio | | 8.5:1 |
Emissions Data – Engine-Out Emissions (1)
NOx
CO
NMHC
THC |
g/hp-hr (g-kW-hr)
g/hp-hr (g-kW-hr)
g/hp-hr
g/hp-hr |
2 (2.68)
4 (5.36)
1
2.51
|
Fuel Consumption (1)
100%
75% |
BTU/hp-hr (MJ/kW-hr)
BTU/hp-hr (MJ/kW-hr) |
8150 (12)
8600 (12) |
Heat Rejection (1)
Jacket Water
Aftercooler
Exhaust |
BTU/min (kW)
BTU/min (kW)
BTU/min (kW) |
4700 (83)
1346 (24)
8118 (143) |
Exhaust System (1)
Flow Rate
Stack Temp
Max Back Pres. |
ft3/min (L/s)
°F (°C)
in-Hg |
947 (447)
1359 (737)
2 |
Intake System (1)
Flow Rate
Max Restriction |
ft3/min (L/s)
in-H2O |
443 (209)
15 |
| Gas Pressure | Min – Max in-H2O | 7-25 |
General Dimensions
| Dimensions* | | NA |
| Length | Inches (mm) | 59.7 (1516) |
| Width | Inches (mm) | 34.4 (875) |
| Height | Inches (mm) | 52.1 (1324) |
* Dimensions are approximate and vary with options.
Disclaimers
(1) All data is based on the engine operating with fuel system, water pump, and 8 in H2O (1.99 kPa) inlet air restriction with 4 in (102 mm) inner diameter, and with 1 in Hg (3 kPa) exhaust restriction with 4 in (102 mm) inner diameter; not included are alternator, fan, optional equipment and driven components. Coolant flows and heat rejection data based on coolants as 50% ethylene glycol/50% water. All data is subject to change without notice.
Designed for the oil and gas market, the GTA8.3SLB delivers exceptional dependability and low cost of operation.
Base Engine – Most major components, including block, crank, cam, gears and liners are common with the proven C series diesel.
Emissions – Lean burn combustion EPA certified to the 2008 SI NSPS emissions. Site validation test is not required.
Air/Fuel Ratio Control – Oxygen sensor-based air/fuel ratio control maintains emissions rate and fuel consumption. Display shows O2, control valve position and fault codes and provides for user input.
Air Handling – Turbocharged and aftercooled design delivers reliable performance and life.
Fuel System – Impco carburetor provides stable operation and fuel tracking through all load ranges.
Speed Control – ECM based speed control and an integral throttle body and actuator provides precise and stable rpm control under all load conditions.
Ignition System – Cummins Programmable Control Ignition Module provides precision control by cylinder and optimal spark-voltage output for superior combustion control.
Lubrication System – High-capacity oil pan and combination full-flow and bypass oil filter reduce maintenance costs and extend service intervals.
Commonality – All electronic Cummins gas compression engines utilize common AFR control components and strategy to minimize parts and maximize technician effectiveness.
Warranty – Cummins one year, unlimited hours. Backed by a worldwide distributor network.
Standard Equipment
Air Inlet System
- Factory installed heavy duty air cleaner
Cooling System
- Two pump / two loop cooling system
- Gear driven jacket water pump
- Gear driven auxiliary coolant pump
- Coolant filter for added corrosion protection
- Thermostat controlled jacket water circuit
Exhaust System
- Tuned dry manifold for optimal exhaust flow
Fuel System
- Impco carburetor
- Fisher S-302 regulator
- Cummins proprietary air fuel ratio control with optimized control algorithm
- Full authority Air Fuel Ratio (AFR) fuel control valve
Speed Control System
- Woodward 1724 electronic governor
Digital Display
- AFR system status
- Engine fault codes with history
- Warning and shutdown information
- User interface eliminates need for a laptop for engine adjustment or commissioning
Lube Oil System
- Crankcase breather
- High capacity oil pan for extended oil drain intervals
- Combination full flow and bypass oil filter
Safety Shutoff Protection
- Intake manifold temperature
- Low oil pressure
- Overspeed
Mounting Arrangement
- Four point mounting
- Lift provisions on engine
Flywheels and Flywheel Housings
- Flywheel SAE #3
- Flywheel housing – SAE #3 Cast-iron, machined to accommodate starter mounting
- SAE #2 and SAE #1 FW/FH options available
Electrical System
Starting System
Power Take-Off
- Front crankshaft pulley
- Front stub shaft optional
