9 material differences · fewer than 12
Tractor oneFiat 70-66 S (DT)1992–1996No measured PTO figureTractor twoInternational Harvester 6851981–1990No measured PTO figure
Which should you choose?
We will not advise between these two machines, because they were not built in overlapping years (1992–1996; 1981–1990). The figures below are side by side so you can judge them yourself; each says whether it was measured, claimed or declared by its source.
Field by field
9 material differences · 5 fields identical or within 5%, which is not counted as material
| Field | 70-66 S (DT) | 685 | Gap |
|---|---|---|---|
| Engine | |||
| Engine power, claimed claimed | 68.1 hp | 68.0 hp | — |
| Engine declared | Fiat 8045.06 | INTERNATIONAL-HARVESTER D-239 | differs |
| Displacement declared | 3.61 L | 3.91 L | +8% 685 |
| Maximum torque declared | 165 lb·ft · 224 N·m | 181 lb·ft · 245 N·m | +9% 685 |
| Transmission | |||
| Top speed declared | 18.6–24.9 mph · 30–40 km/h | 15.5 mph · 25 km/h | differs |
| Clutch declared | — | Pedal operated dry LAYCOCK single disc clutch | — |
| Hydraulics & hitch | |||
| Pump flow declared | 9.1 gpm · 34.5 L/min | — | — |
| Pressure declared | — | 2,698 psi · 186 bar | — |
| Three-point lift, at the coupling points declared | 7,859 lb · 3,565 kg | 4,398 lb · 1,995 kg | +79% 70-66 S (DT) |
| Rear PTO speeds declared | 540 rpm | 540/1000 rpm | differs |
| Weight & dimensions | |||
| Unladen weight declared | 6,173 lb · 2,800 kg | 6,702 lb · 3,040 kg | +9% 685 |
| Maximum permissible mass declared | 10,141 lb · 4,600 kg | — | — |
| Wheelbase declared | 90.9 in · 2,310 mm | 88.2 in · 2,240 mm | — |
| Length declared | 154.3 in · 3,920 mm | 147.2 in · 3,740 mm | — |
| Width declared | 78.0 in · 1,980 mm | 75.6 in · 1,920 mm | — |
| Ground clearance declared | 15.7 in · 400 mm | 14.6 in · 370 mm | +8% 70-66 S (DT) |
| Turning radius, braked declared | 11.3 ft · 3.45 m | 10.9 ft · 3.33 m | — |
| Fuel tank declared | 77.1 qt · 73.0 L | 118.3 qt · 112.0 L | +53% 685 |
Height is not in this table. It is not one measurement: the sources measure it to different points — over the cab on some machines, over the steering wheel or the exhaust on others — and the same tractor measured two ways can differ by most of a metre. It appears here only when both machines' figures carry the point they were measured to and it is the same point, which is not the case for these two. Each machine's own page prints its height as its source gives it.
Fiat 70-66 S (DT) sources
- Source: Traktorenlexikon, “Fiatagri 70-66S/70-66 DTS”
- Source: Traktorenlexikon, “Fiatagri 65-66S/65-66 DTS”
International Harvester 685 sources
- Source: Traktorenlexikon, “IHC 685 (XL)”
- Source: Traktorenlexikon, “IHC 574”