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Nissan A14 specs: 1.4L (85 ci) 4-cylinder, 76 x 77 mm (2.9921 x 3.0315 in) bore and stroke, 8.5:1 compression. Rated 65-80 hp, 1975–1982.
The Nissan 85ci (A14) is close to square: 2.9921" bore against 3.0315" stroke, within 1.3%, which splits the difference between a high-revving layout and a torque layout. The 3.0315" stroke does not reach 4,000 ft/min of mean piston speed until about 7,900 RPM, so piston speed is not what limits this engine's revs — valvetrain and breathing are. Each of the 4 cylinders displaces 21.3 ci (348 cc).
8.5:1 is low by modern standards and generally happy on regular pump fuel.
8 factory variants share these dimensions, rated from 65 to 80 hp across 1975–1982.
| Displacement | 85 ci / 1.4 L |
|---|---|
| Bore | 2.9921" |
| Stroke | 3.0315" |
| Cylinders | 4 |
| Configuration | I4 |
| Compression ratio | 8.5:1 |
| Bore/stroke ratio | 0.987 |
| Fuel type | gas |
|---|---|
| Advertised HP | 65–80 hp |
| Years | 1975–1982 |
| Bore/stroke character | 0.987 — square — bore and stroke are within 5%, a balanced compromise |
|---|---|
| Mean piston speed at 6,000 RPM | 3,032 ft/min — conservative for a street engine |
| Displacement per cylinder | 21.3 ci |
| Static compression | 8.5:1 — low by modern standards, generally happy on regular pump fuel |
Each link opens the calculator with this engine's specs already filled in.
These records share identical bore, stroke, displacement and compression. They differ by model year and factory power rating.
| Year | Advertised HP | Code |
|---|---|---|
| 1975 | 80 hp | A14 |
| 1976 | — | A14 |
| 1977 | — | A14 |
| 1978 | — | A14 |
| 1979 | 65 hp | A14 |
| 1980 | — | A14 |
| 1981 | — | A14 |
| 1982 | — | A14 |
2 factory vehicles, 1975–1982. Each year opens that model's engine table.