Massey Ferguson 8660

Last Updated: July 2024

Overview

The Massey Ferguson 8660 is a powerful row-crop tractor manufactured by AGCO S.A. in France. It has a Sisu Diesel 84CTA turbocharged and intercooled 6-cylinder vertical engine producing 237.5 hp at rated 2100 rpm and 276.7 hp maximum power. The engine displacement is 513 cu in. It has a continuously variable transmission with two mechanical ranges for forward and reverse speeds. Key features include a 4x4 MFWD 4WD chassis, Quadlink suspended front axle, electro-hydraulic differential locks, and an SCR emission control system. The operating weight is 25,365 lbs with operator. It has adjustable tread widths and a wheelbase of 122.2 inches. The hydraulic system is a direct engine drive hydraulic control system with a maximum force of 20,345 lbs through the quick hitch. Larger fuel tank versions of 155.9 US gallons with DEF and 182.3 US gallons without DEF are available.
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Key Specifications

Category: Row Crop

Power Output: 237.5 hp at rated 2100 rpm; 276.7 hp maximum power

Transmission: Continuously variable transmission (CVT) with two mechanical ranges

Drive Type: 4WD

Operating Weight: 25,365 lbs with operator

Fuel Type: Diesel

Massey Ferguson 8660 vs. Similar Tractors

Power Output
Above Average
Greater than 84% of similar tractors.
Operating Weight
Below Average
Greater than 14% of similar tractors.

Technical Specifications

Engine

Manufacturer
Sisu Diesel
Model
84CTA
Cooling Type
Liquid-cooled; engine coolant heat exchanger for crankcase oil, radiator for hydraulic and transmission oil
Cylinder Orientation
Vertical
Valve Configuration
-
Fuel Type
Diesel
Induction Type
Turbocharged with air/air intercooler
Cylinders
6
Displacement (ci)
513 ci
Bore (in)
4.37 in
Stroke (in)
5.71 in
Rated RPM
2100
Power Output (hp)
237.5 hp at rated 2100 rpm; 276.7 hp maximum power

Transmission

Type
Continuously variable transmission (CVT) with two mechanical ranges
Forward Gears
Low range: 0-18 mph, High range: 0-25 mph
Reverse Gears
Low range: 0-12 mph, High range: 0-12 mph
Total Gears
-

Dimensions

Length (in)
223.2 in
Width (in)
-
Height (in)
133.1 in
Operating Weight (lb)
25,365 lbs with operator

Power Take-Off (PTO)

PTO Type
Optional Transmission or Live PTO
PTO Speed 1 (rpm)
1000 rpm / 1000E rpm
PTO Speed 2 (rpm)
540E/1000 rpm
PTO Speed 3 (rpm)
-

Miscellaneous

Chassis
4x4 MFWD 4WD
Drive Type
4WD
Steering Type
Power
Coolant Capacity (qts)
-
Front Tire Diameter (in)
-
Front Tire Width (in)
-
Rear Tire Diameter (in)
-
Rear Tire Width (in)
-
Front/Rear Rim Diameter (in)
-
Tire Type
Ag
Manufacture - End Year
2013
Hitch Type
-
Hitch Category
-
Hitch Position
-
Hitch Capacity (lb)
20,345 lbs (Quick hitch)
Operator Station Type
Cab
Starter Type
Electric
Brake Type
Hydraulic wet disc
Hydraulic System Type
Direct engine drive hydraulic control system

Test Results

Nebraska Tractor Test Laboratory - Test Dates: October - November 2008

Maximum Power and Fuel Consumption

  • Rated Engine Speed: 234.0 HP (174.5 kW) at 2200 rpm
  • Fuel Consumption: 12.58 Gal/hr (47.63 l/h) with a fuel efficiency of 0.375 lb/hp.hr (0.228 kg/kW.h)
  • Standard Power Take-off Speed (1000 rpm): 256.9 HP (191.6 kW) at 2035 rpm
  • Fuel Consumption: 13.28 Gal/hr (50.27 l/h) with a fuel efficiency of 0.361 lb/hp.hr (0.219 kg/kW.h)
  • Maximum Power (1 hour): 266.3 HP (198.6 kW) at 1850 rpm
  • Fuel Consumption: 13.23 Gal/hr (50.07 l/h) with a fuel efficiency of 0.346 lb/hp.hr (0.211 kg/kW.h)

Drawbar Performance

  • Maximum Power (Unballasted, Front Drive Engaged, Turtle 9):
  • Power: 194.9 HP (145.3 kW)
  • Drawbar Pull: 13490 lbs (60.00 kN) at 5.42 mph (8.72 km/h)
  • Fuel Consumption: 0.442 lb/hp.hr (0.269 kg/kW.h) with a fuel efficiency of 15.79 Hp.hr/gal (3.11 kW.h/l)
  • 75% of Pull at Maximum Power:
  • Power: 148.6 HP (110.8 kW)
  • Drawbar Pull: 10105 lbs (44.96 kN) at 5.51 mph (8.87 km/h)
  • Fuel Consumption: 0.468 lb/hp.hr (0.285 kg/kW.h) with a fuel efficiency of 14.91 Hp.hr/gal (2.94 kW.h/l)

Torque and Engine Performance

  • Maximum Torque: 901 lb.-ft. (1222 Nm) at 1400 rpm
  • Torque Rise: 61.4%
  • Torque rise at 1800 engine rpm: 38%
  • Power increase at 1850 engine rpm: 13.8%

Hydraulic Performance

  • Maximum Force Exerted: 24590 lbs (109.4 kN)
  • Pump Delivery Rate at Minimum Pressure and Rated Engine Speed: 51.0 GPM (193.2 l/min)
  • Hydraulic Power at Maximum Pressure: 75.6 HP (56.4 kW) at 2770 psi (191 bar)

Overall Efficiency

  • Fuel Efficiency at Standard PTO Speed (1000 rpm): 19.34 Hp.hr/gal (3.81 kW.h/l)
  • Fuel Consumption: 13.28 Gal/hr (50.27 l/h) at 2035 rpm



NTTL.(2008).Nebraska Summary: S649 Massey Ferguson 8660. Lincoln, NE: Nebraska Tractor Test Laboratory. Retrieved from https://digitalcommons.unl.edu/tractormuseumlit/3160

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