john deere gp
 | 1928 - 1935
Two-Cylinder Letter SeriesRow-Crop tractor | 1928 - 1935 | Two-Cylinder Letter Series | Row-Crop tractor |
|---|---|---|---|---|
1928 - 1935 | ||||
Two-Cylinder Letter Series | ||||
Row-Crop tractor | ||||
1928 - 1935 | |
|---|---|
Two-Cylinder Letter Series | |
Row-Crop tractor |
Engine options | |
|---|---|
John Deere 5.1L 2-cyl kerosene | |
John Deere 5.6L 2-cyl kerosene |
Engine Detail | |
|---|---|
John Deere | |
kerosene | |
2-cylinder | |
liquid-cooled inline | |
Original engine, used until 1931. Water-injection system was used to prevent detonation ("knocking") with low quality fuels. | |
Displacement | 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 | |
|---|---|
John Deere | |
kerosene | |
2-cylinder | |
liquid-cooled | |
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. | |
Displacement | 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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