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Dodge 122ci (1995–2004) specs: 122 ci (2.0L) 4-cylinder, 3.445 x 3.268 in (87.5 x 83 mm) bore and stroke. Rated 132-150 hp, 1995–2004. Used in the Dodge Neon.
The Dodge 122ci (1995–2004) is oversquare — the 3.4449" bore exceeds the 3.2677" stroke by 5.4% — a layout that favors airflow and RPM over leverage at the crank. The 3.2677" stroke does not reach 4,000 ft/min of mean piston speed until about 7,350 RPM, so piston speed is not what limits this engine's revs — valvetrain and breathing are. Each of the 4 cylinders displaces 30.5 ci (500 cc).
It is one of 7 engines in the Dodge 122ci family, all of them 122 ci — the differences between them are in compression, heads and rating, not displacement. 9 factory variants share these dimensions, rated from 132 to 150 hp across 1995–2004.
| Displacement | 122 ci / 2 L |
|---|---|
| Bore | 3.4449" |
| Stroke | 3.2677" |
| Cylinders | 4 |
| Configuration | I4 |
| Compression ratio | 9.6–9.8:1 (published figures vary) |
| Bore/stroke ratio | 1.054 |
| Fuel type | gas |
|---|---|
| Advertised HP | 132–150 hp |
| Years | 1995–2004 |
| Year | Version | HP @ rpm | Torque @ rpm | Comp. |
|---|---|---|---|---|
| 1995 | net | 132 @ 6000 | 129 lb-ft @ 5000 | — |
| 1997 | net | 132 @ 6000 | 129 lb-ft @ 5000 | — |
| 1999 | net | 132 | 130 lb-ft | — |
Factory specification sheet.
| Bore/stroke character | 1.054 — oversquare — bore exceeds stroke, which favours higher RPM and larger valves |
|---|---|
| Mean piston speed at 6,000 RPM | 3,268 ft/min — conservative for a street engine |
| Displacement per cylinder | 30.5 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 |
|---|---|---|
| 1995 | 132 hp | — |
| 1996 | 132 hp | — |
| 1997 | 132 hp | — |
| 1998 | 132 hp | — |
| 1999 | 132 hp | — |
| 2001 | 150 hp | — |
| 2002 | 150 hp | — |
| 2003 | 150 hp | — |
| 2004 | 150 hp | — |
1 factory vehicle, 1995–2004. Each year opens that model's engine table.