Detroit Diesel 16V71 Engine Specs

The Detroit Diesel 16V71 marine engine is part of the iconic Detroit Diesel 71 Series, renowned for its robust design, high power output, and dependable performance in demanding marine environments. This 16-cylinder, V-block engine has been a staple in the marine industry for decades, powering a variety of large vessels, including commercial fishing boats, tugboats, and offshore supply vessels. Available in both turbocharged and non-turbocharged configurations, the 16V71 offers flexibility depending on the specific needs of the vessel. In this article, we’ll explore the specifications and key features of both the turbo and non-turbo versions of the Detroit Diesel 16V71.

Overview of the Detroit Diesel 16V71

The Detroit Diesel 16V71 is a two-stroke diesel engine with 16 cylinders arranged in a V-block configuration. The “71” in its name signifies the 71 cubic inch displacement per cylinder, providing a total displacement of 1,136 cubic inches (18.6 liters). Known for its high power-to-weight ratio, this engine has been a popular choice for marine applications where both reliable power and ease of maintenance are crucial.

Detroit Diesel’s two-stroke cycle simplifies the engine design, allowing it to deliver high power output with fewer moving parts compared to four-stroke engines. The combination of turbocharging and roots-type blowers enhances performance, making the 16V71 versatile enough to meet the requirements of various marine applications.

Specifications for the Detroit Diesel 16V71 Non-Turbo Model

The non-turbocharged version of the 16V71 is known for its simplicity and dependable performance. This configuration is particularly suited to applications where durability and ease of maintenance are priorities over maximum power output.

Key Specifications for the 16V71 Non-Turbo:

• Configuration: 16-cylinder, V-block
• Displacement: 1,136 cubic inches (18.6 liters)
• Compression Ratio: 17.0:1
• Horsepower Output: Approximately 450-650 HP at 1,800 RPM, depending on application and specific tuning
• Torque Output: Around 1,350 lb-ft at 1,400 RPM
• Aspiration: Roots-type blower for air scavenging
• Fuel System: Mechanical unit injectors
• Cooling System: Water-cooled, with options for both raw water and freshwater cooling
• Weight: Approximately 5,800 lbs (2,631 kg)

The non-turbo model is equipped with a roots-type blower to provide the necessary air intake, a critical component for two-stroke engines. This version is highly valued in marine applications where continuous operation and simple maintenance are crucial, and the engine’s lower component complexity helps keep operational costs down.

Specifications for the Detroit Diesel 16V71 Turbo Model

The turbocharged version of the 16V71, also known as the 16V71T, provides a significant boost in power output through the addition of a turbocharger. This model is well-suited for vessels requiring high horsepower and enhanced performance capabilities, such as offshore service vessels and heavy-duty tugboats.

Key Specifications for the 16V71 Turbo:

• Configuration: 16-cylinder, V-block
• Displacement: 1,136 cubic inches (18.6 liters)
• Compression Ratio: 17.0:1
• Horsepower Output: Approximately 650-850 HP at 1,800 RPM, depending on application and specific tuning
• Torque Output: Around 1,750+ lb-ft at 1,400 RPM
• Aspiration: Turbocharged with a roots-type blower for additional air scavenging
• Fuel System: Mechanical unit injectors
• Cooling System: Water-cooled with aftercooling for improved performance, and options for raw water or freshwater cooling
• Weight: Approximately 6,200 lbs (2,812 kg)

The turbocharged 16V71 provides greater power due to the addition of a turbocharger, which compresses the intake air for improved combustion. The aftercooler helps further by cooling this air before it enters the combustion chamber, which increases air density and allows for more efficient fuel combustion. This model is ideal for applications requiring high torque and maximum power output under heavy load conditions.

Advantages of Turbocharged vs. Non-Turbo Models

Both the turbocharged and non-turbocharged versions of the 16V71 have unique benefits, depending on the requirements of the marine application:

• Turbocharged Model (16V71T):
  • Provides higher horsepower and torque, making it suitable for large vessels and demanding applications.
  • Enhanced fuel efficiency due to the turbocharger, particularly under heavy loads.
  • Ideal for vessels such as offshore supply boats, tugboats, and commercial fishing boats that require continuous, high-power operation.
• Non-Turbo Model:
  • A simpler design with fewer components, which can lead to lower maintenance costs and easier servicing.
  • Provides reliable power, ideal for commercial vessels where consistent operation is valued over peak performance.
  • A good choice for applications like small to mid-sized commercial fishing vessels and support boats that operate in environments where maintenance access may be limited.

Diesel Pro Power: Aftermarket Support for the Detroit Diesel 16V71

For those operating a Detroit Diesel 16V71, Diesel Pro Power offers a comprehensive range of aftermarket parts to keep these engines in optimal condition. Diesel Pro Power’s selection includes high-quality components for both the turbo and non-turbo models:

• Turbochargers and Blowers: Improve your engine’s performance with durable, reliable turbochargers and blowers designed for the 16V71.
• Cylinder Heads, Gaskets, and Seals: Ensure proper compression and leak-free operation with quality cylinder heads, gaskets, and seals.
• Fuel Injectors: Efficient fuel delivery is essential for performance, and Diesel Pro Power provides fuel injectors to keep the 16V71 running smoothly.
• Overhaul Kits: For those seeking to rebuild or restore their engines, Diesel Pro Power offers comprehensive overhaul kits that include pistons, rings, bearings, and gaskets.

With fast shipping and a knowledgeable team, Diesel Pro Power is a trusted resource for 16V71 engine owners who need parts and support to keep their engines running strong.

Conclusion

The Detroit Diesel 16V71 marine engine has established itself as a reliable powerhouse in the marine industry. Available in both turbocharged and non-turbocharged models, the 16V71 can be tailored to meet the specific needs of various marine applications. Whether you need the increased performance of the turbo model or the dependable simplicity of the non-turbo version, the 16V71 provides an impressive combination of durability, power, and ease of maintenance.

For high-quality aftermarket parts and expert support, Diesel Pro Power is your go-to source for everything you need to keep your Detroit Diesel 16V71 in peak condition. Visit Diesel Pro Power today to learn more about our products and services designed to support your 16V71 marine engine.