Parts for Detroit Diesel 8V71 Turbo for Canada - Exhaust Section

Parts for Detroit Diesel 8V71 Turbo – Exhaust Section

The Detroit Diesel 8V71 Turbo is one of the most recognized two-stroke diesel engines ever produced, known for its performance, sound, and reliability in marine, industrial, and on-highway applications. Its turbocharged version delivers higher power output and improved fuel efficiency by increasing air density in the cylinders, ensuring complete combustion and enhanced performance. Maintaining an efficient exhaust system is crucial for the longevity and performance of the 8V71 Turbo, as it manages heat dissipation, exhaust flow, and overall engine balance.

At Diesel Pro Power, we provide a complete selection of Detroit Diesel 8V71 Turbo exhaust components—everything from manifolds and gaskets to elbows, risers, and insulation materials. Each part is built to meet or exceed OEM standards, ensuring reliable performance under marine, generator, or industrial workloads.

Detroit Diesel Marine Manifold

The marine manifold is one of the key elements of the 8V71 Turbo exhaust system. It channels hot exhaust gases from the engine’s cylinders toward the turbocharger and exhaust outlet while maintaining proper temperature balance.

Diesel Pro Power offers the Detroit Diesel Marine Water-Cooled Manifold designed for 8V71 turbo engines. The manifold’s water-jacketed design allows efficient cooling, preventing thermal stress and cracking. Marine manifolds experience constant exposure to saltwater and high heat, so durability and corrosion resistance are critical. Ours are precision-cast using high-grade materials with improved sealing surfaces for reliable installation.

This manifold can also be found on other Detroit Diesel Series 71 engines such as 4-71, 16V71, and 8V92, but when installed on the 8V71 Turbo, it’s specifically matched to the turbocharger flow design and water connections. The manifold comes ready for direct installation and requires 1-inch thread fittings for connection to the cooling system.

Head-to-Manifold Gasket

A high-quality gasket between the cylinder head and manifold is vital for maintaining exhaust pressure and preventing leaks. The Detroit Diesel Head-to-Manifold Gasket provides a precise seal under extreme temperature variations, ensuring the exhaust gases flow smoothly to the manifold without escaping into the engine compartment.

Manufactured using durable composite materials resistant to heat, oil, and vibration, this gasket ensures reliable performance over thousands of hours. It’s compatible with 6-71 and 8V71 engines, making it versatile for fleets with multiple Detroit Diesel configurations. Each 8V71 engine requires several gaskets per side, depending on the manifold configuration, and Diesel Pro Power provides exact fitment guidance for each engine variant.

Turbo Flange and Adaptor Components

The Detroit Diesel Turbo Flange Adaptor connects the manifold to the turbocharger, ensuring an exact alignment between exhaust outlet and turbo inlet. Built from high-grade alloy steel, this flange resists thermal distortion and corrosion caused by marine environments.

The inner diameter of 3.125 inches and outer diameter of 6.25 inches ensures compatibility with Detroit Diesel 6V71, 8V71, 6V92, and 8V92 turbo setups. It provides a perfect mating surface to maintain pressure and prevent exhaust leaks that could reduce turbocharger efficiency. Proper flange sealing helps maintain consistent boost pressure, which directly influences power output and engine responsiveness.

Marine Exhaust Manifold Flange Gasket

Between each manifold and flange joint lies a marine manifold flange gasket, designed to seal and insulate the connection. With an outer diameter of 6.25 inches and an inner diameter of 4.25 inches, this gasket fits snugly between flange surfaces to prevent hot gas escape and water intrusion.

It’s constructed from temperature-resistant composite layers that hold up under continuous operation. Marine engines rely heavily on gasket integrity, as any failure could allow exhaust leaks into the engine room, leading to safety issues or reduced performance. Diesel Pro Power’s gaskets are precision-cut to OEM dimensions, ensuring a reliable fit.

Turbo Riser Gasket

The Detroit Diesel Turbo Riser Gasket plays a critical role in connecting the turbo riser assembly to the exhaust path. It maintains airtight sealing while enduring high thermal loads from turbocharger heat cycles.

Its rectangular shape—inner width 2 inches, inner length 3.75 inches, outer width 3.75 inches, and outer length 5.5 inches—ensures compatibility with Detroit Diesel’s riser flange pattern. It’s reinforced to handle vibration and temperature fluctuations common in marine engine rooms. This gasket prevents loss of boost pressure and protects adjoining metal components from warping due to exhaust leaks.

Manifold Insulation Tape

To protect engine room components and maintain safety, Manifold Insulation Tape is essential. Diesel Pro Power offers two sizes:

• 3 inches wide x 100 feet long x 1/8 inch thick
  
  

• 4 inches wide x 100 feet long x 1/8 inch thick
  
  

This fiberglass-based thermal wrap insulates hot exhaust surfaces, reducing radiant heat in confined areas like marine engine compartments. Proper insulation improves crew safety, protects hoses and wiring from heat damage, and enhances turbocharger efficiency by keeping exhaust gases hotter for longer—ensuring faster turbo spool-up.

Many marine professionals prefer wrapping manifolds and turbo risers to prevent heat soak and improve ambient temperatures inside the vessel’s machinery space.

Manifold Hardware – Studs, Crabs, Washers, and Nuts

Every manifold installation requires precision hardware to secure components under vibration and thermal expansion.

• Manifold Studs: These 7/16” – 14/20 x 2.10” studs provide the correct thread engagement for securing manifolds to cylinder heads. Hardened steel construction prevents fatigue.
  
  

• Manifold Crabs: These specialized clamps, sometimes called “crabs,” distribute load evenly across manifold joints, ensuring an airtight seal.
  
  

• Washers and Nuts: Heavy-duty washers and locking nuts prevent loosening from vibration and maintain consistent torque pressure over time.
  
  

Each of these components is available individually at Diesel Pro Power, ensuring that customers can replace only what’s needed rather than purchasing full kits.

Marine Manifold Water Outlet Components

Cooling water exits the manifold through an outlet plate that must remain leak-free. The Detroit Diesel Marine Manifold Water Outlet Plate and corresponding Gasket for Series 71 and 92 Engines ensure a secure seal at this junction.

The gasket material resists coolant corrosion and withstands heat cycles without losing elasticity. These components are vital for preventing water leaks into the exhaust flow, which could damage turbochargers or lead to backflow issues in marine applications.

For manifolds that use threaded outlets, Diesel Pro Power offers the Threaded Plate with 3/4" Thread—precisely machined to accept standard fittings and requiring two bolts for installation.

Marine Manifold Elbows and Fittings

To manage the routing of cooling water or exhaust gases, the 8V71 Turbo exhaust setup uses various elbows:

• 90-Degree Marine Manifold Elbow (1-inch Thread): Ideal for connecting coolant hoses at tight angles.
  
  

• 90-Degree Marine Manifold Elbow (3/4-inch Thread): Commonly used for smaller coolant returns.
  
  

• 45-Degree Marine Manifold Elbow (3/4-inch Thread): Provides flexible installation for custom marine configurations.
  
  

These fittings are built from corrosion-resistant materials that stand up to seawater exposure, ensuring longevity and safety.

Muffler Caps and Flexible Metal Exhaust Hoses

Muffler Caps are designed to prevent water ingress when the engine is off, protecting exhaust systems from backflow and corrosion. They’re available in multiple sizes (3”, 3.5”, 4.5”, and 5”) to match different outlet diameters. Each cap is constructed from stainless or galvanized steel for marine durability.

Flexible Metal Exhaust Hoses help absorb vibration and movement between the engine and the exhaust outlet. Diesel Pro Power offers reinforced flexible hoses in 4”, 6”, and 8” diameters, each 18 inches long. These hoses handle high exhaust temperatures while providing flexibility to compensate for hull movement or vibration. Properly installed, they minimize stress on manifolds, elbows, and turbo risers, extending component life.

Temperature Switch

To monitor engine heat and protect against overheating, Diesel Pro Power supplies a Temperature Switch compatible with Detroit Diesel, Cummins, and Caterpillar engines. It closes at 205°F and uses a 1/2” NPT thread, making it easy to integrate with standard gauges or alarms. Monitoring exhaust and cooling temperatures is essential for preventing damage to manifolds, gaskets, and turbos in the 8V71 system.

Detroit Diesel Green Paint

For final touches, Diesel Pro Power offers Detroit Green Engine Paint, available for ground shipping within the USA and Canada. This high-temperature enamel provides the original Detroit Diesel color finish, protecting metal surfaces from corrosion while giving your engine a professional look. Many restorers use this paint after manifold or turbo installation to maintain factory appearance and protection.

Gauges and Accessories

Maintaining proper readings is essential for performance and safety. Diesel Pro Power offers Mechanical and Electrical Gauges for 12V and 24V systems, including versions with alarms for temperature, oil pressure, and RPM. These gauges are calibrated for Detroit Diesel engines, ensuring accurate monitoring of exhaust and cooling conditions.

Why Buy Detroit Diesel 8V71 Turbo Exhaust Parts from Diesel Pro Power

Trusted by Over 40,000 Satisfied Customers Worldwide

Diesel Pro Power is the leading online source for Detroit Diesel 8V71 Turbo exhaust parts, serving marine, industrial, and power generation customers globally. With more than 40,000 satisfied customers, our reputation for reliability, speed, and quality is unmatched in the diesel parts industry.

OEM Quality with Modern Reliability

Each exhaust component is built to OEM specifications or better, ensuring perfect fit and long-term dependability. Our marine manifolds, turbo flanges, gaskets, and fittings undergo rigorous quality checks before shipping. Whether you operate a commercial fishing vessel, tugboat, or power generator, Diesel Pro ensures your 8V71 Turbo exhaust system performs at peak efficiency.

Fast Worldwide Shipping & Easy Ordering

We understand that downtime is costly. That’s why Diesel Pro Power ships globally with real-time tracking, ensuring your order arrives fast no matter where you are. Our intuitive online catalog makes it easy to identify and purchase the right components for your specific engine setup.

Expert Technical Support

Our knowledgeable support team specializes in Detroit Diesel legacy engines, offering guidance on fitment, installation, and troubleshooting. Whether replacing a single gasket or performing a full exhaust rebuild, our team ensures you get the correct parts the first time.

Complete System Coverage

From manifolds and gaskets to insulation, elbows, and flexible hoses, Diesel Pro Power offers everything you need for a complete 8V71 Turbo exhaust rebuild. Instead of sourcing from multiple vendors, you can order your entire exhaust system from one trusted supplier.

Reliable Service, Decades of Experience

For decades, Diesel Pro Power has supported marine professionals, engine rebuilders, and OEM operators worldwide. Our dedication to legacy Detroit Diesel engines ensures continued availability of quality parts, allowing your equipment to remain operational for years to come.