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John Deere GP - engine

John Deere GP tractor photo
1928 - 1935   Two-Cylinder Letter Series
Row-Crop tractor
Previous model:John Deere C
more John Deere GP specifications...




 

Engine Detail:

Original engine, used until 1931. Water-injection system was used to prevent detonation ("knocking") with low quality fuels.
 John Deere
 kerosene
 2-cylinder
 liquid-cooled
 311.6 ci [5.1 L]
Bore/Stroke:5.75x6.00 inches [146 x 152 mm]
Rated RPM:900
Coolant capacity:36 qts [34.1 L]
 

Engine Detail:

The new engine was introuded in 1931 on GP serial number 224100. It had lower compression but with a quarter-inch larger bore, producing slightly more power with better fuel economy. The lower compression eliminated the pre-ignition problem when using low-quality fuel, so the water-injection system was eliminated.
 John Deere
 kerosene
 2-cylinder
 liquid-cooled
 339.3 ci [5.6 L]
Bore/Stroke:6.00x6.00 inches [152 x 152 mm]
Rated RPM:950
Coolant capacity:36 qts [34.1 L]
 

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Last update:June 13, 2017
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