Nuffield Universal-4 (4 DM) vs SOMECA SOM-511

11 material differences · fewer than 12

Tractor one

1954–1961

No measured PTO figure

Tractor two

1964–1965

No measured PTO figure

Which should you choose?

Read our verdict on the Universal-4 (4 DM) and the SOM-511 → It is generated from the rows below by a fixed, versioned rule set, and names the figure behind every call.

11 material differences · 4 fields identical or within 5%, which is not counted as material

Nuffield Universal-4 (4 DM) and SOMECA SOM-511, field by field
Field	Universal-4 (4 DM)	SOM-511	Gap
Engine
Engine power, claimed claimed	53.9 hp	54.3 hp	—
Engine declared	BMC 34 TA	O.M.-FIAT CO 2D-45	differs
Displacement declared	3.40 L	4.40 L	+29% SOM-511
Maximum torque declared	152 lb·ft · 206 N·m	—	—
Transmission
Top speed declared	15.5 mph · 25 km/h	13.7 mph · 22 km/h	+14% Universal-4 (4 DM)
Clutch declared	Pedal-operated dry BORG & BECK single-plate clutch	Pedal-operated two-stage dry FERODO double clutch	differs
Hydraulics & hitch
Pump flow declared	7.2 gpm · 27.3 L/min	4.0 gpm · 15.2 L/min	+80% Universal-4 (4 DM)
Pressure declared	—	2,988 psi · 206 bar	—
Three-point lift at ends declared	2,831 lb · 1,284 kg	3,285 lb · 1,490 kg	+16% SOM-511
Rear PTO speeds declared	540 rpm	540 rpm	—
Weight & dimensions
Unladen weight declared	4,945 lb · 2,243 kg	5,567 lb · 2,525 kg	+13% SOM-511
Wheelbase declared	78.0 in · 1,981 mm	80.0 in · 2,032 mm	—
Length declared	121.7 in · 3,091 mm	133.9 in · 3,400 mm	+10% SOM-511
Width declared	68.9 in · 1,750 mm	68.7 in · 1,745 mm	—
Height declared	80.7 in · 2,050 mm	72.0 in · 1,829 mm	+12% Universal-4 (4 DM)
Ground clearance declared	17.0 in · 432 mm	16.1 in · 410 mm	+5% Universal-4 (4 DM)
Turning radius, braked declared	—	10.8 ft · 3.30 m	—
Fuel tank declared	67.2 qt · 63.6 L	59.2 qt · 56.0 L	+14% Universal-4 (4 DM)

Source

Source