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Nissan GA16i specs: 1.6L (97 ci) 4-cylinder, 76 x 88 mm (2.9921 x 3.4646 in) bore and stroke. Built 1989–1990. Used in the Nissan Sentra.
The Nissan GA16i is undersquare — the 3.4646" stroke exceeds the 2.9921" bore by 13.6% — a layout that trades peak RPM for leverage and torque low in the range. The 3.4646" stroke puts mean piston speed at 4,000 ft/min around 6,950 RPM, which is where a production bottom end is generally considered at its limit. Each of the 4 cylinders displaces 24.3 ci (397 cc).
It is one of 4 engines in the Nissan 97ci family, all of them 97 ci — the differences between them are in compression, heads and rating, not displacement. 2 factory variants share these dimensions across 1989–1990.
| Displacement | 97 ci / 1.6 L |
|---|---|
| Bore | 2.9921" |
| Stroke | 3.4646" |
| Cylinders | 4 |
| Configuration | I4 |
| Bore/stroke ratio | 0.864 |
| Fuel type | gas |
|---|---|
| Years | 1989–1990 |
| Bore/stroke character | 0.864 — undersquare — stroke exceeds bore, which favours low-end torque |
|---|---|
| Mean piston speed at 6,000 RPM | 3,465 ft/min — conservative for a street engine |
| Displacement per cylinder | 24.3 ci |
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 |
|---|---|---|
| 1989 | — | GA16i |
| 1990 | — | GA16i |
1 factory vehicle, 1989–1990. Each year opens that model's engine table.