International Harvester D-440 or Porsche-Diesel Super L 318?
Which should you choose?
The data can’t decide this. Power at the PTO shaft cannot be compared: the D-440 has only engine power (gross or net not stated), claimed — a different quantity from power at the shaft; the Super L 318 has only engine power (gross or net not stated), claimed — a different quantity from power at the shaft.
- The International Harvester D-440 suits loader and hydraulic implement work better on this data: 21% (4.2 L/min / 1.1 gpm) more hydraulic flow.
Generated by rule set compare@4 from the figures on the side-by-side table, allowed by route “the same stated configuration”. Measured figures are compared only with measured, claimed only with claimed, at the same test condition; differences within each figure’s tolerance are not called.
What decides it, question by question?
| Question | D-440 | Super L 318 | Call |
|---|---|---|---|
| Which puts more power through the PTO shaft? | 29.4 kW (39.4 hp)Traktorenlexikon, “McCormick D-440 Standard” | 29.3 kW (39.3 hp)Traktorenlexikon, “Porsche-Diesel Super L 318” | Not comparableNot comparable on power at the PTO shaft: the D-440 has only engine power (gross or net not stated), claimed — a different quantity from power at the shaft; the Super L 318 has only engine power (gross or net not stated), claimed — a different quantity from power at the shaft. |
| Which turns a litre of fuel into more work at the shaft? | — | — | No figureNo call on fuel efficiency at the shaft: no figure on record for the D-440 and the Super L 318. |
| Which pulls harder at the drawbar? | — | — | No figureNo call on drawbar power: no figure on record for the D-440 and the Super L 318. |
| Which pumps more oil for implements? | 24.0 L/min (6.3 gpm)Traktorenlexikon, “McCormick D-440 Standard” | 19.8 L/min (5.2 gpm)Traktorenlexikon, “Porsche-Diesel Super L 318” | AheadThe International Harvester D-440 has 21% more hydraulic flow (4.2 L/min / 1.1 gpm) than the Porsche-Diesel Super L 318 (both pump flow, as stated by the source). |
| Which lifts more on the three-point hitch? | 2,000 kg (4,409 lb)Traktorenlexikon, “McCormick D-440 Standard” | 1,100 kg (2,425 lb)Traktorenlexikon, “Porsche-Diesel Super L 318” | Not comparableNot comparable on three-point lift: the D-440: lift at the hitch ends, as stated by the source (Traktorenlexikon, “McCormick D-440 Standard”); the Super L 318: lift at an unstated point, as stated by the source (Traktorenlexikon, “Porsche-Diesel Super L 318”) — not the same quantity, basis and condition. |
| Which is heavier, for traction? | 1,940 kg (4,277 lb)Traktorenlexikon, “McCormick D-440 Standard” | 2,030 kg (4,475 lb)Traktorenlexikon, “Porsche-Diesel Super L 318” | EvenEven on weight (both unladen weight, as stated by the source): the difference is under the 10% threshold, too small to call. |
| Which may carry more ballast and load? | 3,190 kg (7,033 lb)Traktorenlexikon, “McCormick D-440 Standard” | — | No figureNo call on maximum permissible mass: no figure on record for the Super L 318. |
| Which has the wider choice of gears? | 8Traktorenlexikon, “McCormick D-440 Standard” | 8Traktorenlexikon, “Porsche-Diesel Super L 318” | EvenEven on forward gears (both forward gears, as stated by the source): the difference is under the 25% threshold, too small to call. |
| Which offers a creeper range? | — | YesTraktorenlexikon, “Porsche-Diesel Super L 318” | No figureNo call on a creeper range: not stated for the D-440. |
| Which is faster on the road? | 20 km/h (12.4 mph)Traktorenlexikon, “McCormick D-440 Standard” | 19.4 km/h (12.1 mph) to 26.2 km/h (16.3 mph)Traktorenlexikon, “Porsche-Diesel Super L 318” | EvenEven on top speed (both top speed forward, as stated by the source): the figures vary by configuration and the ranges overlap. |
| Which offers more PTO speeds? | 540 rpmTraktorenlexikon, “McCormick D-440 Standard” | 565/1106 rpmTraktorenlexikon, “Porsche-Diesel Super L 318” | No figureNo call on PTO speeds: no standard PTO speed stated for the Super L 318. |
| Which PTO runs independently of the ground drive? | independentTraktorenlexikon, “McCormick D-440 Standard” | — | No figureNo call on PTO independence: not stated for the Super L 318. |
| Which drives on both axles? | 2WDTraktorenlexikon, “McCormick D-440 Standard” | 2WDTraktorenlexikon, “Porsche-Diesel Super L 318” | EvenEven on drive: all two-wheel drive. |
| Which is newer, and what about parts? | 1958–1959 | 1960–1961 | EvenSame era: production began within 5 years of each other. We hold no parts-availability data, so there is no call on parts. |
What does this mean in plain words?
- The International Harvester D-440 has 21% more hydraulic flow (4.2 L/min / 1.1 gpm) than the Porsche-Diesel Super L 318 (both pump flow, as stated by the source).
- Even on weight (both unladen weight, as stated by the source): the difference is under the 10% threshold, too small to call.
- Even on forward gears (both forward gears, as stated by the source): the difference is under the 25% threshold, too small to call.
- Even on top speed (both top speed forward, as stated by the source): the figures vary by configuration and the ranges overlap.
- Even on drive: all two-wheel drive.
- Same era: production began within 5 years of each other. We hold no parts-availability data, so there is no call on parts.
- Not comparable on power at the PTO shaft: the D-440 has only engine power (gross or net not stated), claimed — a different quantity from power at the shaft; the Super L 318 has only engine power (gross or net not stated), claimed — a different quantity from power at the shaft.
- Not comparable on three-point lift: the D-440: lift at the hitch ends, as stated by the source (Traktorenlexikon, “McCormick D-440 Standard”); the Super L 318: lift at an unstated point, as stated by the source (Traktorenlexikon, “Porsche-Diesel Super L 318”) — not the same quantity, basis and condition.
- No figure on record for every machine, so no call on: fuel efficiency at the shaft, drawbar power, maximum permissible mass, a creeper range, PTO speeds and PTO independence.
← Every figure for both machines, side by side, with sources