JI Case 831
Built: 1960–1969 · Series: 30 er Baureihe
More machines from model year 1960
J.I. Case 30 series – from 430 to 1031 (1960–1969): Case-o-matic, Comfort King, petrol, LPG and diesel, 25 to 76 kW
The 30 series was J.I. Case's tractor programme of the 1960s from Racine, Wisconsin: in 1960 the 430, 530, 630, 730, 830 and 930 appeared to replace the 300 and 400 models, in 1964 the revised 31s (431, 531, 631, 731, 831, 931) and 41s (441, 541, 641, 741, 841, 941) followed with a new bonnet, and the 1031 of 1966 formed the top with over 100 hp. The number logic: the first digit gives the size class, the second the generation within the range – 30 for the original models, 31 and 41 for the second series; GP stands for General Purpose, the row-crop version with adjustable track, Comfort King for the rubber-mounted operator platform offered from 1965.
Read on 3 more paragraphs
Case offered every fuel in this period: in the register 13 models run on diesel, six on petrol and five on petrol or LPG – a reflection of American farms where propane was cheaper than diesel in the 1960s. The technical hallmark was the Case-o-matic transmission, a torque-converter drive that appeared in 1957 as one of the first in farm machinery and was offered in the 30s alongside the manual gearbox. Values run from 25.4 to 76.1 kW, 2,419 to 7,391 cm³ with four or six cylinders, unladen weights from 1,415 to 4,234 kg, lengths from 3,302 to 4,191 mm and widths from 1,559 to 2,235 mm.
In 1967 Tenneco took over the company and in 1969 the 70 series followed; the 30s are thus the last pure J.I. Case tractors before the conglomerate era that led to Case IH in 1985.
Used, they are sought-after collector and working tractors in the USA. When buying, the condition of the Case-o-matic (converter and clutches), engine wear on the petrol versions, hydraulics and the completeness of the Comfort King equipment are what count.
Sources: SpecCodex register, model data: J.I. Case 30er-Baureihe, Case Corporation (Wikipedia)
Technical data
Engine
| Fuel | dieselcorrect |
|---|---|
| Power | 66.9 hp (49.2 kW)correct |
| Rated speed | 1.700/1.900 rpmcorrect |
| Cylinders | 4correct |
| Displacement | 4,927 cm³correct |
| Bore | 111.13 mmcorrect |
| Stroke | 127 mmcorrect |
| Compression ratio | 15.3correct |
| Cooling | water-cooledcorrect |
Dimensions and weights
| Length | 3,642 mmcorrect |
|---|---|
| Width | 2,165 mmcorrect |
| Height | 1,676 mmcorrect |
| Wheelbase | 2,584 mmcorrect |
| Ground clearance | 508 mmcorrect |
| Unladen weight | 3,241 kgcorrect |
Drivetrain and chassis
| Drive | rear-wheel drivecorrect |
|---|---|
| Gearbox | 8 V/2 Rcorrect |
| Front tyres | 6.00-16 ASFcorrect |
| Rear tyres | 15.5-38 AScorrect |
| Top speed | 30 km/hcorrect |
Origin and approval
| Construction | frame constructioncorrect |
|---|
Where this model stands
Power-to-weight ratio: 15.2 kW/t (49 kW / 3.2 t)
Power class: Universal (40–100 hp)
Stronger than 46% 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 JI Case 831 have?
The JI Case 831 delivers 66.9 hp.
How much does the JI Case 831 weigh?
The unladen weight is 3,241 kg.
What engine does the JI Case 831 have?
4 cylinders, 4,927 cm³ displacement, Diesel.
How fast does the JI Case 831 go?
Top speed is 30 km/h.
What are the dimensions of the JI Case 831?
3,642 mm × 2,165 mm × 1,676 mm.
When was the JI Case 831 built?
Production years: 1960–1969.
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.
We do not sell machines. We ask the dealers who carry this model and come back with price and lead time.
Request a quote →
We ask the suppliers and come back with price and lead time.
Request spare parts →
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.
Missing a figure you were looking for? Report it →
Know this machine better? Have a photo, a manual, or know that a figure is wrong? Add it to the register →
Other models in this series
Sources: [1]
Tractor in 3D section
Turn the model, look inside and click an assembly — each one is explained.