International Harvester D-440 vs Porsche-Diesel S 309

12 material differences

Tractor one

1958–1959

No measured PTO figure

Tractor two

1961–1963

No measured PTO figure

Which should you choose?

Read our verdict on the D-440 and the S 309 → It is generated from the rows below by a fixed, versioned rule set, and names the figure behind every call.

12 material differences · 2 fields identical or within 5%, which is not counted as material

International Harvester D-440 and Porsche-Diesel S 309, field by field
Field	D-440	S 309	Gap
Engine
Engine power, claimed claimed	39.4 hp	39.6 hp	—
Engine declared	INTERNATIONAL-HARVESTER DD-132 S	Porsche-Diesel F 309	differs
Displacement declared	2.18 L	2.63 L	+21% S 309
Maximum torque declared	112 lb·ft · 152 N·m	102 lb·ft · 138 N·m	+10% D-440
Transmission
Top speed declared	12.4 mph · 20 km/h	14.7 mph · 23.6 km/h	+18% S 309
Clutch declared	—	Single-disc dry clutch with oil-hydraulic Voith fluid coupling	—
Hydraulics & hitch
Pump flow declared	6.3 gpm · 24.0 L/min	4.0 gpm · 15.0 L/min	+60% D-440
Pressure declared	2,119 psi · 146 bar	—	—
Three-point lift at ends declared	4,409 lb · 2,000 kg	—	—
Rear PTO speeds declared	540 rpm	540 rpm	—
Weight & dimensions
Unladen weight declared	4,277 lb · 1,940 kg	3,197 lb · 1,450 kg	+34% D-440
Maximum permissible mass declared	7,033 lb · 3,190 kg	—	—
Wheelbase declared	74.0 in · 1,880 mm	69.7 in · 1,770 mm	+6% D-440
Length declared	118.5 in · 3,010 mm	111.8 in · 2,840 mm	+6% D-440
Width declared	73.4 in · 1,865 mm	46.1 in · 1,170 mm	+59% D-440
Height declared	62.3 in · 1,583 mm	76.8 in · 1,950 mm	+23% S 309
Ground clearance declared	16.8 in · 427 mm	14.2 in · 360 mm	+19% D-440
Turning radius, braked declared	9.8 ft · 3.00 m	—	—
Fuel tank declared	58.1 qt · 55.0 L	42.3 qt · 40 L	+38% D-440

Source

Source