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Introduction
The Detroit Diesel 12V92 is part of the renowned Series 92 family, offering exceptional performance in a wide range of marine applications. Available in turbocharged and naturally aspirated configurations, this V-12 two-stroke diesel engine delivers the power, reliability, and efficiency needed for demanding environments. Its versatility has made it a popular choice for both recreational and commercial marine use.
Key Specifications
Engine Type:
- Two-stroke V-12 diesel engine
Bore and Stroke:
- Bore: 4.84 inches (123 mm)
- Stroke: 5.00 inches (127 mm)
Displacement:
- 1,104 cubic inches (18.10 liters)
Compression Ratios:
- Naturally Aspirated (N/A): 19:1
- Turbocharged: 17:1
Power Output:
- Varies between 550 HP (naturally aspirated) to over 1,000 HP (turbocharged with aftercooling or intercooling).
Weight:
- Approximately 4,560 lbs (dry weight, without accessories).
Cooling System:
- Closed-loop cooling system with options for raw water heat exchangers.
Lubrication System:
- Gear-driven oil pump with a full-flow oil filtration system.
Firing Order:
- Right-hand rotation: 1L-6L-3R-5R-3L-5L-2R-4R-2L-4L-1R-6R
- Left-hand rotation: 1L-6R-1R-4L-2L-4R-2R-5L-3L-5R-3R-6L
Turbocharged Variants: Aftercooled and Intercooled Configurations
Aftercooled Models:
- Equipped with a liquid-cooled aftercooler to reduce the temperature of compressed intake air post-turbocharging.
- Enhances air density for better combustion, higher efficiency, and increased power output.
- Common in heavy-duty marine propulsion applications requiring prolonged high performance.
Intercooled Models:
- Features an air-to-air intercooler system for intake air cooling.
- Simplifies cooling system requirements while maintaining efficient heat dissipation.
- Ideal for applications where reliability and fuel economy are critical.
Naturally Aspirated (N/A) Models
- Delivers steady and reliable power with fewer components, reducing maintenance complexity.
- Preferred for applications requiring consistent performance without the added complexity of turbocharging systems.
Applications
The Detroit Diesel 12V92 is widely used in:
- Commercial marine vessels such as tugs, trawlers, and ferries.
- Recreational boats, including yachts and sportfishing vessels.
- Auxiliary power systems for larger marine setups.
Aftermarket Support for Detroit Diesel 12V92 Marine Engines
To maintain peak performance and extend the life of your 12V92 engine, high-quality aftermarket parts are essential. Diesel Pro Power offers a full range of parts designed to meet the specific needs of both turbocharged and naturally aspirated 12V92 engines.
Available Parts
- Complete Overhaul Kits:
- Comprehensive rebuild kits including pistons, rings, cylinder liners, bearings, gaskets, and seals.
- Specifically tailored to both naturally aspirated and turbocharged configurations.
- Turbocharger and Cooling Components:
- Turbocharger assemblies and rebuild kits for both standard and high-performance applications.
- Liquid-cooled aftercoolers and air-to-air intercoolers with replacement cores.
- Heat exchangers and raw water cooling components.
- Fuel System Components:
- Injectors calibrated for turbocharged and naturally aspirated configurations.
- Fuel pumps, filters, and manifolds designed for efficient fuel delivery.
- Lubrication System:
- Oil pumps, bypass valves, and spin-on oil filters.
- Kits for complete lubrication system maintenance.
- Air and Exhaust Systems:
- Blowers, exhaust manifolds, and air filters.
- Replacements for intake and exhaust system components specific to turbocharged and N/A engines.
- Electrical Components:
- Starters and alternators suitable for marine environments.
- Gaskets and Seal Kits:
- Full gasket sets and individual seals for minor repairs or overhauls.
Recommended Sources
For premium aftermarket parts and expert support, visit:
Maintenance and Troubleshooting
Service Manual Information For Detroit Diesel 12V92
Preventive Maintenance:
- Regularly clean and inspect aftercoolers and intercoolers for debris or blockages.
- Change fuel filters and oil filters at recommended intervals to prevent wear and contamination.
- Monitor turbocharger performance for signs of wear or inefficiency.
Common Issues:
- Overheating: Often caused by restricted coolant flow or fouled intercoolers.
- Power Loss: Indicative of injector wear or turbocharger inefficiencies.
Parts Catalog for Non-Turbo 12V92 Engines:
- Rebuild Kits: Complete kits for overhauling non-turbo engines, including cylinder kits, bearings, seals, and gaskets.
- Cylinder Heads: High-quality replacements to restore engine performance.
- Water Pumps: Reliable raw water and freshwater pumps for efficient cooling.
- Injectors: Precision-engineered injectors for optimal fuel delivery.
- Fuel Pumps: Durable fuel pumps for consistent performance.
- Gasket and Seal Kits: Comprehensive kits to prevent leaks and maintain engine integrity.
- Exhaust Manifolds: Reinforced manifolds for efficient exhaust flow.
- Blower Assemblies: Optimized blowers to maximize air intake.
Parts Catalog for Turbo 12V92 Engines:
- Rebuild Kits: Turbo-specific kits for restoring turbocharged configurations.
- Turbochargers: High-efficiency turbochargers to enhance engine performance.
- Intercoolers: Aftermarket intercoolers for improved air temperature and combustion efficiency.
- Water Pumps: Specialized cooling pumps designed for turbocharged systems.
- Injectors: Turbo-rated injectors for precise fuel delivery under high pressure.
- Fuel Pumps: Heavy-duty fuel pumps for turbocharged and intercooled systems.
- Gasket and Seal Kits: Turbo-specific kits to ensure leak-free operation in high-pressure environments.
- Exhaust Manifolds: Durable manifolds capable of handling increased exhaust flow.
- Blower Assemblies: Blowers designed to optimize air intake for turbocharged engines.
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