| Engine options | |
| Allis-Chalmers 2.6L 4-cyl gasoline | |
| Allis-Chalmers 2.9L 4-cyl diesel | |
| Allis-Chalmers 3.3L 4-cyl diesel |
| Engine Detail | |
| Allis-Chalmers | |
| gasoline | |
| 4-cylinder | |
| liquid-cooled | |
| Displacement | 160 ci 2.6 L |
| Bore/Stroke | 3.625x3.625 inches 92 x 92 mm |
| Power | 56.8 hp 42.4 kW |
| Compression | 8:1 |
| Rated RPM | 2000 |
| Torque | 154 lb-ft 208.8 Nm |
| Torque RPM | 1624 |
| Starter volts | 12 |
| Oil capacity | 4 qts 3.8 L |
| Coolant capacity | 10 qts 9.5 L |
| Sparkplug | ACDelco C-45 |
|   | Champion J-7 |
|   | Auto-Lite A-5 |
| Sparkplug gap | 0.023 inches 0.584 mm |
| Point gap | 0.022 inches 0.559 mm |
| Intake valve clearance | 0.009 inches (hot) 0.229 mm |
| Exhaust valve clearance | 0.015 inches (cold) 0.381 mm |
| Engine Detail | |
| Allis-Chalmers | |
| diesel | |
| 4-cylinder | |
| liquid-cooled | |
| The 175 diesel engine was used in the Allis-Chalmers 615 from the start of production until serial number 5001, likely in mid-1966. | |
| Displacement | 175 ci 2.9 L |
| Bore/Stroke | 3.5625x4.375 inches 90 x 111 mm |
| Power | 44 hp 32.8 kW |
| Compression | 15.5:1 |
| Rated RPM | 2000 |
| Engine Detail | |
| Allis-Chalmers D2200 | |
| diesel | |
| 4-cylinder | |
| liquid-cooled | |
| The Allis-Chalmers 615 received the 200 diesel engine at serial number 5001. | |
| Displacement | 200 ci 3.3 L |
| Bore/Stroke | 3.875x4.125 inches 98 x 105 mm |
| Power | 57 hp 42.5 kW |
| Compression | 16.25:1 |
| Rated RPM | 2000 |
| Idle RPM | 650-2200 |
| Torque | 153 lb-ft 207.5 Nm |
| Torque RPM | 1750 |
| Firing order | 1-2-3-4 |
| Starter volts | 12 |
| Oil capacity | 9 qts 8.5 L |
| Coolant capacity | 13.5 qts 12.8 L |
| Intake valve clearance | 0.015 inches (hot) 0.381 mm |
| Exhaust valve clearance | 0.015 inches (hot) 0.381 mm |
| Page information | |
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| Peter Easterlund - owner/author | |
| Email: Peter@TractorData.com | |
| Updated on July 24, 2020 |