FOR SALE Detroit Diesel 471TI 350HP J&T Series Marine Diesel with Twin Disc MG-506 2:1. This engine great running and condition. Come with warranty 60 days.
The Detroit Diesel 4-71TI (often marinized by Johnson & Towne/J&T) is a legendary, high-output, two-stroke marine engine. It squeezes 350 horsepower out of a compact 4-cylinder block, making it a popular choice for fast, planing-hull sportfishing boats.
Core Specifications
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- Configuration : Inline 4-cylinder, 2-stroke diesel
- Displacement : 4.7 liters (284 cubic inches)
- Horsepower : 350 HP
- Aspiration : Turbocharged and Intercooled (TI)
- Bore : 4.25 inches (108 mm)
- Stroke : 5.0 inches (127 mm)
- Compression Ratio : 17.0:1
Dimensions & Weight
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- Length : Approx. 44 inches (112 cm)
- Width : Approx. 31 inches (79 cm)
- Height : Approx. 44 inches (112 cm)
- Dry Weight : Approx. 1,830 lbs (830 kg)
Fluid Capacities
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- Oil Capacity : Approx. 15 to 22 quarts
- Coolant Capacity : Approx. 14 quarts














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