Engine
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| Engine options | |
| Engine | Waterloo Gasoline Engine Company 5.4L 2-cyl kerosene Waterloo Gasoline Engine Company 6.5L 2-cyl kerosene Waterloo Gasoline Engine Company 7.6L 2-cyl kerosene |
| Engine Detail | |
| Fuel | Waterloo Gasoline Engine Company kerosene |
| Cylinders | 2-cylinder |
| Cooling | liquid-cooled |
| Engine application | Original engine, used until 1915, Waterloo Boy R serial number 1114 (RA to RD). This horizontal engine design was the basis for John Deere two-cylinder tractor engines used for the following forty-six years. |
| Displacement | 330 ci 5.4 L |
| Bore/Stroke | 5.50x7.00 inches 140 x 178 mm |
| Compression | 3.91:1 |
| Rated RPM | 700 |
| Firing order | 1-2 |
| Starter type | hand-crank |
| Engine Detail | |
| Fuel | Waterloo Gasoline Engine Company kerosene |
| Cylinders | 2-cylinder |
| Cooling | liquid-cooled |
| Engine application | The six-inch bore engine was used on the Waterloo Boy R from 1915 until 1917 (RE to RK), serial number 6728. A detachable cylinder head was introduced at serial number 1610 (RH). |
| Displacement | 396 ci 6.5 L |
| Bore/Stroke | 6.00x7.00 inches 152 x 178 mm |
| Compression | 3.91:1 |
| Rated RPM | 750 |
| Firing order | 1-2 |
| Starter type | hand-crank |
| Engine Detail | |
| Fuel | Waterloo Gasoline Engine Company kerosene |
| Cylinders | 2-cylinder |
| Cooling | liquid-cooled |
| Notes | The final Waterloo Boy model R engine, used from 1917 to the end of production (RM). This engine size continued to be used in the Waterloo Boy model N and the early John Deere model D. |
| Displacement | 465 ci 7.6 L |
| Bore/Stroke | 6.50x7.00 inches 165 x 178 mm |
| Compression | 3.91:1 |
| Rated RPM | 750 |
| Firing order | 1-2 |
| Starter type | hand-crank |
| Coolant capacity | 34 qts 32.2 L |
Values may vary by engine, transmission or configuration. View source page