Datsun Stanza

Datsun Stanza: generations: what actually changed between 1 generation and 2 generation

What the generation change does not do: it does not raise the 1.6 Gasoline. 1 generation 1.6 MT is 92 hp from 1595 cm³; 2 generation 1.6 MT is 80 hp from 1593 cm³ — 12 hp less from 2 cm³ less. Specific output falls from 92 / 1.595 ≈ 57.7 hp/L to 80 / 1.593 ≈ 50.2 hp/L. If you want the strongest 1.6 in this catalogue, that is 1 generation, not 2 generation.

1 generation (1977–1981), Sedan, 2 versions. Both use a 1595 cm³ Gasoline Inline 4, 92 hp / 68 kW, 2 valves per cylinder, boost No, Carburetor. Engine placement is not measured. Front suspension is Independent, spring; rear is Independent, spring. Front brakes are Disc; rear are Drum. Ground clearance is 170 mm on both 1.6 MT and 1.6 AT. The only measured kerb is 1005 kg on 1.6 MT; kerb and gross on 1.6 AT are not measured.

2 generation (1982–1986), Sedan, 10 versions. Displacement spread is 1593–1998 cm³. Peak power is 131 hp on 1.8 MT; the Diesel 1.7 MT is 61 hp with Turbo. Engine placement, where measured, is Front, transverse. Front suspension remains Independent, spring. Rear suspension, rear brakes, ground clearance, tank, and wheels are not measured. Front brakes stay Disc. Kerb is recorded as either 970 kg or 1030 kg — a 60 kg gap (1030 − 970) on otherwise identically named powertrains.

What the generation change does not do: it does not raise the 1.6 Gasoline. 1 generation 1.6 MT is 92 hp from 1595 cm³; 2 generation 1.6 MT is 80 hp from 1593 cm³ — 12 hp less from 2 cm³ less. Specific output falls from 92 / 1.595 ≈ 57.7 hp/L to 80 / 1.593 ≈ 50.2 hp/L. If you want the strongest 1.6 in this catalogue, that is 1 generation, not 2 generation.

What the generation change does add: a 1809 cm³ 1.8 MT at 131 hp, a 1998 cm³ 2.0 AT at 100 hp or 105 hp, and a 1680 cm³ Diesel 1.7 MT Turbo at 61 hp. Those three powertrains do not exist in 1 generation.

Specs table: every version, named as in the data

Feed system: Carburetor is measured on 2 generation 1.6 MT at 970 kg, on 2 generation 1.8 MT at 1030 kg, and on both 1 generation versions. On the other 2 generation Gasoline versions it is not measured. Valves per cylinder: 2 on both 1 generation versions; not measured on 2 generation. Bore × stroke: 83 × 73 on both 1 generation versions; not measured on 2 generation.

Engine comparison: hp per litre and what the extra displacement buys

1.8 MT vs 1.6 MT (2 generation). Same Manual 5, same FWD, same years. Displacement 1809 vs 1593 cm³ is +216 cm³. Power 131 vs 80 hp is +51 hp. Specific output: 131 / 1.809 ≈ 72.4 hp/L versus 80 / 1.593 ≈ 50.2 hp/L. The 1.8 is not a mildly larger 1.6; it makes about 22 more hp per litre. Peak rpm is 6400 on 1.8 MT versus 5200 on 1.6 MT. If the choice is “which 2 generation manual Gasoline,” 1.8 MT is the power and specific-output answer.

1.8 MT vs 2.0 AT. The 1809 cm³ manual makes 131 hp; the 1998 cm³ automatic makes 100 hp or 105 hp. That is 26–31 hp more from 189 cm³ less. Specific output: 72.4 hp/L on 1.8 MT versus 100 / 1.998 ≈ 50.1 hp/L and 105 / 1.998 ≈ 52.6 hp/L on 2.0 AT. The extra displacement on 2.0 AT does not buy more catalogue power; it buys Automatic 3 instead of Manual 5.

Two 2.0 AT names. Both are 1998 cm³ Gasoline Inline 4, Automatic 3, FWD. 2.0 AT 105 hp is +5 hp over 2.0 AT 100 hp (105 − 100). That is 5 / 100 = 5% more power at the same displacement. There is no rpm, torque, or feed figure to explain the 5 hp. Distinguish them by 100 hp / 74 kW versus 105 hp / 78 kW, not by the name 2.0 AT.

1 generation 1.6 vs 2 generation 1.6. 92 hp from 1595 cm³ versus 80 hp from 1593 cm³. 1 generation 1.6 MT is the stronger 1.6 ( +12 hp ). Boost is recorded as No on 1 generation; not measured on 2 generation 1.6 MT. Carburetor is recorded on 1 generation both versions and on the 970 kg 2 generation 1.6 MT.

1.7 MT Diesel. 61 hp / 45 kW at 5000 rpm from 1680 cm³, Turbo, Manual 5, FWD. Specific output 61 / 1.680 ≈ 36.3 hp/L — the lowest in the catalogue. Versus 2 generation 1.6 MT Gasoline: −19 hp (61 − 80) from +87 cm³ (1680 − 1593). Versus 1.8 MT: −70 hp (61 − 131). Turbo is recorded only on 1.7 MT; it does not put this version above any Gasoline in hp.

Performance and economy (mpg, 0–100)

0–100 is not measured on any Datsun Stanza version. Top speed is not measured. City, highway, and combined consumption are not measured. CO2 and eco class are not measured. Fuel grade is not measured. Torque (Nm) is not measured, so there is no Nm/L or diesel-torque argument in this data. A “mpg” ranking cannot be written from these figures; stating one would invent a number.

What can be ranked without those figures is kg per hp, using measured kerb only:

• 1.8 MT, 970 kg: 970 / 131 ≈ 7.4 kg/hp (lowest measured in the line)
• 1.8 MT, 1030 kg: 1030 / 131 ≈ 7.9 kg/hp
• 2.0 AT 105 hp, 970 kg kerb: 970 / 105 ≈ 9.2 kg/hp
• 2.0 AT 105 hp, 1030 kg kerb: 1030 / 105 ≈ 9.8 kg/hp
• 1 generation 1.6 MT, 1005 kg: 1005 / 92 ≈ 10.9 kg/hp
• 1.6 MT, 970 kg: 970 / 80 ≈ 12.1 kg/hp
• 1.6 MT, 1030 kg: 1030 / 80 ≈ 12.9 kg/hp
• 1.7 MT, 1030 kg: 1030 / 61 ≈ 16.9 kg/hp (highest measured)

2.0 AT 100 hp has no kerb; only gross 970 kg or 1030 kg. kg/hp on kerb is therefore not measured for 2.0 AT 100 hp. 1.7 MT with both weights not measured also has no kg/hp. 1.6 AT has no kerb, so no kg/hp.

Dimensions and weight: 970 kg vs 1030 kg, and the 170 mm clearance

Kerb 970 kg appears on 2 generation 1.6 MT 80 hp, 1.8 MT 131 hp, and 2.0 AT 105 hp. Kerb 1030 kg appears on 1.6 MT 80 hp, 1.8 MT 131 hp, 2.0 AT 105 hp, and 1.7 MT 61 hp. Same name, same hp, 60 kg more. On 1.8 MT that is 60 / 131 ≈ 0.46 kg extra per hp; on 1.6 MT it is 60 / 80 = 0.75 kg extra per hp. Prefer the 970 kg record of a given name when both exist, if the goal is lower kg/hp.

Gross weight is measured only as 970 kg on one 2.0 AT 100 hp and 1030 kg on the other 2.0 AT 100 hp. Those are not kerb figures; do not treat 970 kg gross as equal to 970 kg kerb on 2.0 AT 105 hp.

1 generation 1.6 MT kerb 1005 kg sits between the two 2 generation kerbs (970 and 1030). Ground clearance 170 mm is measured only on 1 generation 1.6 MT and 1.6 AT. On every 2 generation version, clearance is not measured. Tank is not measured. Wheel size is not measured. Rear suspension and rear brakes are measured only on 1 generation (Independent, spring / Drum).

Which version to choose

Choose 2 generation 1.8 MT (131 hp) if the criterion is power and kg/hp. It is the peak 131 hp / 98 kW at 6400 rpm, 1809 cm³ Gasoline Inline 4, Manual 5, FWD. At 970 kg kerb it is ≈ 7.4 kg/hp; at 1030 kg it is ≈ 7.9 kg/hp. Versus 1.6 MT in the same generation: +51 hp. Versus 2.0 AT 105 hp: +26 hp and two extra gears (5 versus 3), at the cost of shifting a Manual instead of an Automatic. One of the two 1.8 MT records lists Carburetor (the 1030 kg kerb); the 970 kg 1.8 MT has feed not measured.

Choose 1 generation 1.6 MT (92 hp) if you want the strongest 1.6 and the only measured clearance. 92 hp from 1595 cm³, Carburetor, boost No, 2 valves per cylinder, bore × stroke 83 × 73, Manual 5, FWD, kerb 1005 kg (≈ 10.9 kg/hp), clearance 170 mm, rear Independent, spring, rear Drum. It beats 2 generation 1.6 MT by 12 hp. It loses to 1.8 MT by 39 hp (131 − 92). There is no 1.8 and no 2.0 in 1 generation.

Choose 1 generation 1.6 AT if you need Automatic in the 1977–1981 years. Same 92 hp / 68 kW, 1595 cm³, Carburetor, Automatic 3, FWD, clearance 170 mm. Kerb is not measured, so you cannot compute kg/hp against 1.6 MT. The mechanical difference in the data is Manual 5 versus Automatic 3 at identical hp.

Choose 2 generation 2.0 AT 105 hp if you need Automatic in 1982–1986 and want the stronger of the two 2.0 names. 105 hp / 78 kW, 1998 cm³, Automatic 3, FWD. Prefer the 970 kg kerb record over the 1030 kg kerb record (60 kg). It is 26 hp below 1.8 MT and 13 hp above 1 generation 1.6 AT (105 − 92), with 403 cm³ more (1998 − 1595).

Choose 2 generation 2.0 AT 100 hp only if that is the Automatic you have. It is 5 hp below the other 2.0 AT. Kerb is not measured; gross is 970 kg or 1030 kg. Do not pick it over 2.0 AT 105 hp on power — 100 is less than 105.

Choose 2 generation 1.6 MT (80 hp) only if you stay in 2 generation and stay at 1593 cm³. It is 12 hp below 1 generation 1.6 MT and 51 hp below 1.8 MT. At 970 kg it is ≈ 12.1 kg/hp; at 1030 kg ≈ 12.9 kg/hp. Carburetor is measured on the 970 kg record; not measured on the 1030 kg record.

Choose 1.7 MT only if the requirement is Diesel. 61 hp, Turbo, 1680 cm³, Manual 5, FWD. It is the least powerful version (61 vs 80, 92, 100, 105, 131). At 1030 kg kerb it is ≈ 16.9 kg/hp. The other 1.7 MT has kerb and gross not measured. Consumption is not measured, so a diesel economy claim is not available here.

Reliability / problems. No failure rates, rust scores, or service intervals are in the data. What is measured and relevant to upkeep is the feed label Carburetor where present, Manual 5 versus Automatic 3, Gasoline versus Diesel, and Turbo only on 1.7 MT. Anything beyond those labels is not measured.

Short ranking by measured hp: 1.8 MT 131 → 2.0 AT 105 → 2.0 AT 100 → 1 generation 1.6 MT / 1.6 AT 92 → 2 generation 1.6 MT 80 → 1.7 MT 61. Short ranking by measured kg/hp (kerb only): 1.8 MT 970 kg first, then 1.8 MT 1030 kg, then 2.0 AT 105 hp 970 kg, then 2.0 AT 105 hp 1030 kg, then 1 generation 1.6 MT, then 2 generation 1.6 MT, then 1.7 MT 1030 kg. If the buy question is one car from this catalogue and the metric is power per kilogram, the answer is 2 generation 1.8 MT at the 970 kg kerb record.