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Suzuki 122ci (1999–2003) specs: 2.0L (122 ci) 4-cylinder, 84 x 90 mm (3.3071 x 3.5433 in) bore and stroke, 9.7:1 compression. Rated 127 hp, 1999–2003.
The Suzuki 122ci (1999–2003) is undersquare — the 3.5433" stroke exceeds the 3.3071" bore by 6.7% — a layout that trades peak RPM for leverage and torque low in the range. The 3.5433" stroke puts mean piston speed at 4,000 ft/min around 6,750 RPM, which is where a production bottom end is generally considered at its limit. Each of the 4 cylinders displaces 30.5 ci (500 cc).
9.7:1 is in the range that usually runs on pump premium.
5 factory variants share these dimensions, rated at 127 hp across 1999–2003.
| Displacement | 122 ci / 2 L |
|---|---|
| Bore | 3.3071" |
| Stroke | 3.5433" |
| Cylinders | 4 |
| Configuration | I4 |
| Compression ratio | 9.7:1 * |
| Bore/stroke ratio | 0.933 |
* Compression ratio from a single source; not yet cross-verified.
| Fuel type | gas |
|---|---|
| Advertised HP | 127 hp |
| Years | 1999–2003 |
| Bore/stroke character | 0.933 — undersquare — stroke exceeds bore, which favours low-end torque |
|---|---|
| Mean piston speed at 6,000 RPM | 3,543 ft/min — in the range typical of performance street engines |
| Displacement per cylinder | 30.5 ci |
| Static compression | 9.7:1 — in the range that usually runs on pump premium |
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 |
|---|---|---|
| 1999 | 127 hp | — |
| 2000 | 127 hp | — |
| 2001 | 127 hp | — |
| 2002 | 127 hp | — |
| 2003 | 127 hp | — |
1 factory vehicle, 1999–2003. Each year opens that model's engine table.