Detroit 6V92 Parts and Information

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Parts for Detroit Diesel 6V92

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Engine Specifications & Applications of the Detroit Diesel 6V92 Turbo and Non-Turbo Engines

Overview of the 6V92 Engine Series

The Detroit Diesel 6V92 is a robust and time-tested engine from the legendary Detroit Diesel 92 Series. Known for its durability, simplicity, and torque-rich performance, the 6V92 has served across a wide spectrum of applications—from military craft to fishing vessels, from city buses to heavy industrial equipment. This 6-cylinder, V-type, 2-stroke diesel engine comes in both turbocharged (6V92T/6V92TA) and naturally aspirated (6V92N) variants. Though production ceased years ago, tens of thousands remain in operation today, supported by the global demand for high-quality aftermarket parts—precisely what Diesel Pro Power delivers.

6V92 Engine Configuration & Design

General Specifications

Engine Type: 2-Stroke, V6 Diesel
Displacement: 552 cubic inches (9.0 liters)
Bore x Stroke: 4.84 in × 5.00 in (123 mm × 127 mm)
Block Material: Cast iron
Firing Order: 1-4-5-2-3-6
Oil System Capacity: Approx. 7-8 gallons (marine pan dependent)
Cooling System Capacity: Varies with application; approx. 8-10 gallons
Compression Ratio:

Turbocharged: ~17.0:1
Naturally Aspirated: ~19.0:1

Turbocharged vs. Non-Turbocharged Variants

Turbocharged (6V92T / 6V92TA)

Turbocharger: Air Research or Garrett turbo options
Charge Cooling: Optional aftercooled configuration
Horsepower: 300–400 HP depending on injectors and configuration
Torque: Up to 1,050 lb-ft
Applications: Marine propulsion, fire trucks, generators, and highway coaches

Naturally Aspirated (6V92N)

Aspiration: Atmospheric (no turbo or blower only)
Horsepower: 210–275 HP depending on injector size
Torque: Up to 800 lb-ft
Applications: City buses, smaller boats, cranes, older military vehicles

Common Applications of the Detroit Diesel 6V92 Engine

1. Marine Use

The 6V92 remains one of the most popular legacy marine diesel engines on the water. Known for its reliability in rough seas and long-distance operations, it powers vessels ranging from:

Commercial fishing boats
Push boats and tugboats
Charter yachts and sportfishing boats
Fire and rescue marine craft
Pilot boats and harbor utility vessels

The turbocharged version is ideal for propulsion systems where higher output is needed in a compact footprint. The naturally aspirated models are still widely used in auxiliary generator sets and vessels operating in less demanding environments.

2. On-Highway Applications

Though many fleets have upgraded to newer platforms, the 6V92 engine remains in use in:

Transit and school buses (notably GM RTS, Crown, and Blue Bird)
Fire trucks and emergency vehicles
Heavy-duty vocational trucks

The 6V92 was widely respected for its high power-to-weight ratio and torque performance at low RPMs, making it ideal for stop-and-go urban driving or rapid response vehicles.