Parts for Detroit Diesel 671 Turbo - Engine Overhaul Kit Section

Parts for Detroit Diesel 671 Turbo – Engine Overhaul Kit Section

When it’s time to restore the power and reliability of your Detroit Diesel 6-71 Turbo engine, a high-quality overhaul kit is the key to achieving factory-level performance and longevity. Diesel Pro Power provides complete Detroit Diesel 6-71 Turbo engine overhaul kits and supporting components—everything you need to perform a professional rebuild from the block up. Whether you operate a marine vessel, generator, or industrial machine powered by the 6-71, Diesel Pro Power has your parts ready to ship, backed by over 40,000 satisfied customers worldwide.

Detroit Diesel 6-71 Turbo Engine Overview

The Detroit Diesel 6-71 Turbo belongs to the legendary Series 71 family, a line of two-stroke diesel engines celebrated for their durability, high torque output, and long service life. The 6-71 configuration consists of six cylinders with a displacement of 426 cubic inches (7.0 liters). Turbocharged and often aftercooled or intercooled, these engines deliver more power and efficiency compared to their naturally aspirated counterparts.

The 6-71 Turbo has been widely used in marine propulsion, industrial equipment, and heavy-duty trucking applications. Marine variants are prized for their consistent power delivery, smooth operation, and the ability to handle high loads over long periods—qualities that make these engines a favorite among operators of commercial vessels and classic yachts.

An overhaul or inframe rebuild is typically recommended when the engine shows signs of wear such as increased oil consumption, low compression, excessive blow-by, or coolant leakage. A well-executed rebuild can easily extend the engine’s service life for another 10,000–20,000 hours, restoring performance close to factory standards.

Detroit Diesel 6-71 Turbo Overhaul Kits

Detroit 6-71 Turbo Intercooled Overhaul Kit

This complete inframe rebuild kit is designed for 6-71 turbo intercooled engines. It includes all major internal components needed to refresh the power assembly, including pistons, piston rings, liners, connecting rod bearings, main bearings, thrust washers, and the full gasket set.

Intercooled engines use a heat exchanger to reduce air charge temperature between the turbocharger and intake manifold. This improves combustion efficiency and engine durability. The overhaul kit is specifically tailored for these configurations, ensuring the correct compression ratio and component tolerances.

Each kit meets or exceeds OEM standards, manufactured with precision tolerances for long-lasting reliability. Diesel Pro Power’s rebuild kits are trusted by professional marine engineers and fleet operators alike.

Detroit 6-71 Turbo Aftercooled Overhaul Kit

For aftercooled turbocharged 6-71 engines, this version of the kit provides the correct piston crown and liner configuration to accommodate the higher air density of aftercooled induction. The aftercooler design improves thermal efficiency and fuel economy, allowing these engines to operate at higher continuous power ratings.

Both intercooled and aftercooled kits provide everything needed to restore compression, oil control, and performance. Choosing the correct version based on your engine’s cooling system is essential for maintaining the original factory specifications.

Supporting Tools and Components

In addition to complete overhaul kits, Diesel Pro Power offers a full range of complementary components and tools required for a successful rebuild.

Cylinder Liner Installation & Components

Detroit Diesel Cylinder Liner Puller – A must-have tool for safely extracting liners from the engine block without damage. Essential for 6-71 rebuilds, this puller ensures even removal and prevents scoring of the liner bore.

Liner Inserts and Shims –

• Standard and Oversized Inserts for 71 Series engines provide precise liner seating within the block. Proper installation prevents coolant leaks and maintains compression integrity.

• Liner Shims in 0.002" and 0.003" thicknesses allow for fine adjustment of liner protrusion. Maintaining correct liner height is critical for head gasket sealing and compression performance.

Each of these components is precision-machined to meet Detroit Diesel factory specifications, ensuring consistent engine rebuild results.

Gasket Kits & Seals

A proper overhaul requires a full overhaul gasket kit, containing every seal and gasket needed to reassemble the engine. Diesel Pro Power’s Detroit Diesel 6-71 Overhaul Gasket Kit includes head gaskets, crankshaft seals, exhaust and intake manifold gaskets, oil pan seals, and all O-rings.

Crankshaft Seals

Detroit Diesel two-stroke engines rely heavily on properly fitted crankshaft seals to maintain lubrication and prevent oil loss. Options include:

• Front Crankshaft Seal (Standard, Universal Rotation) – Suitable for both left- and right-hand rotation marine and industrial engines.

• Rear Crankshaft Seals (Single Lip and Double Lip, Standard or Oversized) – Designed for tight sealing under various operating pressures and crankcase conditions.

• Seal Sleeves (Oversized) – Provide a reliable sealing surface for worn crankshaft ends, eliminating the need for costly crankshaft replacement.

All seals are made with high-quality rubber compounds and reinforced lips to resist high temperatures and oil degradation common in heavy-duty applications.

Engine Tools and Tune-Up Equipment

For professional or do-it-yourself rebuilders, Diesel Pro Power offers several specialized tools:

• Detroit Diesel Tune-Up Kit for Series 53, 71, and 92 – Comprehensive tool set for timing, injector calibration, and governor adjustment.

• Piston Ring Compressor Tool – Allows smooth piston installation into liners without ring breakage.

• Piston Ring Assembly Tool – Assists in precise fitting of piston rings on Detroit Diesel and Cummins engines.

These tools ensure accuracy, safety, and consistency when rebuilding or maintaining your Detroit 6-71.

Filtration Systems

Rebuilding an engine is only the first step—maintaining clean fuel and oil flow is equally crucial. Diesel Pro Power supplies filters specifically engineered for Detroit Diesel two-stroke engines.

Fuel Filters

• Primary Spin-On Fuel Filter – Designed with 1-inch threads for easy installation and improved filtration capacity.

• Primary Cartridge Filter – Traditional cartridge style for older configurations; ensures consistent fuel delivery.

• Secondary Spin-On Fuel Filter – Removes fine contaminants before reaching injectors.

• Secondary Cartridge Filter – For systems using replaceable element housings.

Oil Filters

• Spin-On Type Oil Filter – Simplifies maintenance and provides reliable filtration for both Detroit Diesel and Cummins engines.

• Cartridge Type Oil Filter – For classic setups requiring housing-mounted filter elements.

Proper filtration ensures long-term engine protection after an overhaul, keeping injectors, bearings, and turbochargers free of contaminants.

Cooling System Components

An engine rebuild should always include inspection and servicing of the cooling system. Diesel Pro Power provides several essential parts:

• Detroit Diesel Thermostat (173°F) – Regulates engine temperature for optimal combustion efficiency.

• Radiator Cleaner – Removes scale, rust, and debris from cooling passages to ensure consistent heat transfer.

• Engine Block Heater (120V, 1500W) – Keeps engine temperatures stable during cold starts, extending component life.

• Temperature Switch (205°F Activation) – Triggers alarms or shutdown systems to prevent overheating.

These parts help maintain ideal operating conditions and protect against overheating—a leading cause of premature engine failure.

Finishing Touches

After an overhaul, it’s important to preserve your engine’s condition and appearance. Diesel Pro Power carries Detroit Diesel Green Paint and Primer designed specifically for engine surfaces. These coatings resist heat, oil, and fuel exposure, providing lasting protection and a professional finish.

Instrumentation and Monitoring

To maintain precise control of your engine after overhaul, Diesel Pro Power offers a variety of mechanical and electrical gauges. These include:

• Mechanical gauges for oil pressure, water temperature, and RPM

• Electrical gauges (12V and 24V options)

• Alarm-equipped gauges for added safety in marine environments

Monitoring these readings helps detect early signs of trouble, allowing preventive maintenance before costly damage occurs.

Benefits of Rebuilding the Detroit Diesel 6-71 Turbo

Rebuilding your 6-71 Turbo engine with Diesel Pro Power parts provides multiple long-term benefits:

• Extended Engine Life: Renew internal components to factory specs.

• Improved Fuel Efficiency: Proper compression and sealing reduce fuel consumption.

• Increased Power Output: Restores full performance levels for marine or industrial use.

• Reduced Oil Consumption: New rings, seals, and liners improve combustion efficiency.

• Lower Emissions: Cleaner burn and improved compression lead to reduced exhaust smoke.

Why Choose Diesel Pro Power

Diesel Pro Power has earned the trust of professionals worldwide as the most comprehensive source for Detroit Diesel parts online. Here’s why:

• 40,000+ Satisfied Customers Worldwide – Trusted by shipowners, fleets, and independent technicians.

• Global Shipping with Same-Day Dispatch – Orders ship fast, ensuring minimal downtime.

• Detailed Product Descriptions and Photos – Confidence in ordering the right part the first time.

• Multilingual Support and Documentation – English and Spanish materials make ordering easy for international customers.

• Exclusive Warranty on Major Components – Every part is backed by Diesel Pro’s reliability guarantee.

Maintenance Tips After Overhaul

After installing your 6-71 overhaul kit:

• Use break-in oil for the first 50 hours of operation to allow proper seating of rings and bearings.

• Regularly monitor oil pressure, coolant temperature, and exhaust color.

• Replace filters at shorter intervals during the first 100 hours post-rebuild.

• Always torque head bolts and bearing caps according to Detroit Diesel service specifications.

Following these best practices ensures that your rebuilt 6-71 Turbo engine delivers maximum reliability and performance for years to come.