This page provides a detailed comparison of the specifications for the Caterpillar D7C and the Hart-Parr Old Reliable 30-60.
| Caterpillar D7C | Hart-Parr Old Reliable 30-60 | |
|---|---|---|
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| Engine | ||
| Engine Manufacturer | Caterpillar | Hart-Parr |
| Engine Model | D339 | - |
| Engine Cooling Type | Liquid-Cooled | Liquid-cooled |
| Engine Fuel Type | Diesel | Kerosene |
| Engine Induction Type | Naturally Aspirated | Natural |
| Engine Cylinders | 4 | 2 |
| Engine Displacement Value | 831 ci (13.6 L) | 2356 ci (38.6 L) |
| Engine Rated Rpm | 1200 | 300 |
| Engine Power Output Value | 128 hp (95.4 kW) | - |
| Transmission | ||
| Transmission Type | Gear | Gear |
| Transmission Forward Gears | 5 | 1 |
| Transmission Reverse Gears | 4 | 1 |
| Dimensions | ||
| Length Value | 167.6 | 200 |
| Width Value | 97 | 106 |
| Operating Weight Value | 26930 lb (12215 kg) | 20100 lb (9117 kg) |
| Miscellaneous | ||
| Chassis | - | 4x2 |
| Drive Type | - | 2WD |
| Starter Type | Gasoline Pony Engine | - |
