John Deere 3120 Engine


John Deere 3120 tractor photo
1969 - 1972
Row-Crop tractor
Engine Detail
John Deere
diesel
6-cylinder
liquid-cooled
Displacement303 ci
5.0 L
Bore/Stroke3.86x4.33 inches
98 x 110 mm
Power (gross)86 hp
64.1 kW
Fuel systemdirect injection
Compression16.7:1
Rated RPM2200
Idle RPM600-2360
Torque220 lb-ft
298.3 Nm
Torque RPM1450
Firing order1-5-3-6-2-4
Starterelectric
Starter volts12
Oil capacity11 qts
10.4 L
Coolant capacity20 qts
18.9 L
Page information
Contact: Peter Easterlund
Updated on January 9, 2023
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