John Deere AR Engine


John Deere AR tractor photo
1935 - 1953
Model year
Standard-tread tractor
Engines overview
John Deere 5.1L 2-cyl all fuel
John Deere 5.3L 2-cyl all fuel
Engine Detail
John Deere
all fuel
2-cylinder
liquid-cooled horizontal twin
Original engine, used until 1940 at serial number 259334.
Displacement:309 ci
5.1 L
Bore/Stroke:5.50x6.50 inches
140 x 165 mm
Cooling system:thermo-siphon
Air cleaner:oil bath
Compression:3.96:1
Rated RPM:975
Firing order:1-2
Oil capacity:9.25 qts
8.8 L
Coolant capacity:32 qts
30.3 L
Sparkplug gap:0.030 inches
0.762 mm
Engine Detail
John Deere
all fuel
2-cylinder
liquid-cooled
Larger engine, introduced in 1940 (serial number 260000)
Displacement:321 ci
5.3 L
Bore/Stroke:5.50x6.75 inches
140 x 171 mm
Air cleaner:oil bath
Compression:4.45:1
Rated RPM:975
Firing order:1-2
Oil capacity:11 qts
10.4 L
Page information
Last update:July 24, 2020
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