Caterpillar R2 Engine

Caterpillar R2 tractor photo
1934 - 1942
Agricultural Crawler tractor
Engines overview
Caterpillar 4.1L 4-cyl gasoline
Caterpillar 3.6L 4-cyl gasoline
Engine Detail
Original engine, used on the 5E version.
Displacement251 ci
4.1 L
Bore/Stroke4.00x5.00 inches
102 x 127 mm
Air cleaneroil bath
Rated RPM950
Engine Detail
Caterpillar 3400G
The 3400G was used on the 4J and 6J versions, which were most R-2 tractors built.
Displacement221 ci
3.6 L
Bore/Stroke3.75x5.00 inches
95 x 127 mm
Air cleaneroil bath
Rated RPM1525
Oil capacity12 qts
11.4 L
Coolant capacity28 qts
26.5 L
Caterpillar R2 Engine
Caterpillar R2 engine image
Page information
Contact: Peter Easterlund
Updated on July 1, 2022
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