Ford 8100 A
Built: 1978–1981 · Series: 700
More machines from model year 1978
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Ford 8100 A: water-cooled six-cylinder diesel tractor from the 700 series, 6,224 cc, 77 kW and 4,825 kg weight, built 1978 to 1981
Ford was an American vehicle manufacturer whose tractor division built its own farm machinery in North America and Europe before it was sold to the Italian Fiat group in 1991 and absorbed into New Holland. The 8100 A from the 700 series was built from 1978 to 1981 and ranked among the manufacturer's larger tractors of that period.
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The 8100 A is powered by a water-cooled six-cylinder diesel engine of 6,224 cc, producing 105 hp, or 77 kW, and 372 Nm of torque at 2,100 rpm. At a weight of 4,825 kg, a length of 4,615 mm, a height of 2,900 mm and a width of 2,010 mm, with a wheelbase of 2,915 mm, the machine ranks among the heavier wheeled tractors in the register; top speed is 25 km/h.
A six-cylinder engine of over 6 litres belongs to a different world of work than the smaller three- and four-cylinder tractors of the same make: it is built for primary tillage with wider ploughs and cultivators and for heavy trailer loads that call for high torque at comparatively low engine speed. A machine of this size is not intended for work with light mounted implements or for fast road travel.
When buying such a heavy Ford tractor secondhand, the condition of the axles, final drives and tyres given the high weight, and the tightness of the hydraulic lines for implements and steering, matter most. Also worth checking are the injection pump and injectors of the large diesel engine, the cooling system, and the clutch and gearbox for wear caused by the high torque transmitted.
Sources: SpecCodex-Register: Kennwerte des Modells Ford 8100 A
Technical data
Engine
| Fuel | dieselcorrect |
|---|---|
| Power | 105 hp (77 kW)correct |
| Rated speed | 2,100 rpmcorrect |
| Torque | 372 Nmcorrect |
| Cylinders | 6correct |
| Displacement | 6,224 cm³correct |
| Bore | 107 mmcorrect |
| Stroke | 115 mmcorrect |
| Cooling | water-cooledcorrect |
Dimensions and weights
| Length | 4,615 mmcorrect |
|---|---|
| Width | 2,010 mmcorrect |
| Height | 2,900 mmcorrect |
| Wheelbase | 2,915 mmcorrect |
| Ground clearance | vorne 673 hinten 578 mmcorrect |
| Unladen weight | 4,825 kgcorrect |
Drivetrain and chassis
| Drive | four-wheel drivecorrect |
|---|---|
| Gearbox | Dual Power 16x4correct |
| Front tyres | 13.6 R28correct |
| Rear tyres | 16.9 R38correct |
| Top speed | 25 km/hcorrect |
Origin and approval
| Construction | unit construction (no separate frame)correct |
|---|
Where this model stands
Power-to-weight ratio: 16 kW/t (77 kW / 4.8 t)
Power class: Large (100–180 hp)
Stronger than 69% of the tractors in the register — out of 15,663 models with a stated power figure.
Calculated from the documented figures above — not a rating.
Frequently asked questions
How much power does the Ford 8100 A have?
The Ford 8100 A delivers 105 hp.
How much does the Ford 8100 A weigh?
The unladen weight is 4,825 kg.
What engine does the Ford 8100 A have?
6 cylinders, 6,224 cm³ displacement, Diesel.
How fast does the Ford 8100 A go?
Top speed is 25 km/h.
What are the dimensions of the Ford 8100 A?
4,615 mm × 2,010 mm × 2,900 mm.
When was the Ford 8100 A built?
Production years: 1978–1981.
What to check before buying
- Check the hour meter against the service records — a replaced instrument is the most common gap.
- Compare the data plate and chassis number with the papers.
- Check the weights in the papers against the figures here — attachments change them.
- Check front and rear tyre sizes: mismatched pairs strain the drivetrain.
- Shift the gearbox cold and warm — jumps only show up at temperature.
- Load the hydraulics and watch for sag.
- Ask about parts availability for this build year — the running costs hang on it.
A general list for this type of machine — no substitute for an inspection or an appraiser.
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This page carries 22 individual figures for this model. They come from 1 recorded source; every figure can be traced there. What we cannot document is not here — we leave gaps open rather than estimate them.
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Sources: [1]
Tractor in 3D section
Turn the model, look inside and click an assembly — each one is explained.