5 material differences · fewer than 12
Tractor oneMASSEY-HARRIS 101/102 Senior1942–1946No measured PTO figureTractor twoNuffield M-41948–1957No measured PTO figure
Which should you choose?
Read our verdict on the 101/102 Senior and the M-4 → It is generated from the rows below by a fixed, versioned rule set, and names the figure behind every call.
Field by field
5 material differences · 2 fields identical or within 5%, which is not counted as material
| Field | 101/102 Senior | M-4 | Gap |
|---|---|---|---|
| Engine | |||
| Engine power, claimed claimed | 38.5 hp | 38.0 hp | — |
| Engine declared | CONTINENTAL F-226 or F-224 | MORRIS-COMMERCIAL 38 T/V/T | differs |
| Displacement declared | — | 3.77 L | — |
| Maximum torque declared | — | 138 lb·ft · 187 N·m | — |
| Transmission | |||
| Top speed declared | 12.4 mph · 20 km/h | 17.4 mph · 28 km/h | +40% M-4 |
| Clutch declared | Pedal operated dry Borg and Beck single plate clutch | — | — |
| Hydraulics & hitch | |||
| Pump flow declared | — | 7.2 gpm · 27.3 L/min | — |
| Rear PTO speeds declared | 530 | 540 rpm | differs |
| Weight & dimensions | |||
| Unladen weight declared | 4,030 lb · 1,828 kg | 4,546 lb · 2,062 kg | +13% M-4 |
| Wheelbase declared | 78.0 in · 1,981 mm | 78.0 in · 1,981 mm | — |
| Length declared | — | 121.5 in · 3,086 mm | — |
| Width declared | — | 69.0 in · 1,753 mm | — |
| Ground clearance declared | — | 17.0 in · 432 mm | — |
| Fuel tank declared | 72.1 qt · 68.2 L | 67.2 qt · 63.6 L | +7% 101/102 Senior |
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.
MASSEY-HARRIS 101/102 Senior sources
- Source: Traktorenlexikon, “Massey-Harris Massey-Harris Modell 101 und 102 Senior”
Nuffield M-4 sources
- Source: Traktorenlexikon, “Nuffield Universal M 4 / TVO (1948-1954”