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Dodge World Engine 2.0 specs: 122 ci (2.0L) 4-cylinder, 3.386 x 3.386 in (86 x 86 mm) bore and stroke, 10.5:1 compression. Rated 158 hp, 2007–2012.
The Dodge World Engine 2.0 is exactly square — 3.3858" bore and 3.3858" stroke are the same — which splits the difference between a high-revving layout and a torque layout. The 3.3858" stroke does not reach 4,000 ft/min of mean piston speed until about 7,100 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).
10.5:1 is in the range that usually runs on pump premium.
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. 6 factory variants share these dimensions, rated at 158 hp across 2007–2012.
| Displacement | 122 ci / 2 L |
|---|---|
| Bore | 3.3858" |
| Stroke | 3.3858" |
| Cylinders | 4 |
| Configuration | I4 |
| Compression ratio | 10.5:1 |
| Bore/stroke ratio | 1 |
| Fuel type | gas |
|---|---|
| Redline | 6,750 rpm (factory limit) |
| Advertised HP | 158 hp |
| Years | 2007–2012 |
| Year | Version | HP @ rpm | Torque @ rpm | Comp. |
|---|---|---|---|---|
| 2007 | net | 158 @ 6400 | 141 lb-ft @ 5000 | 10.5:1 |
| 2008 | net | 158 @ 6400 | 141 lb-ft @ 5000 | 10.5:1 |
| 2009 | net | 158 @ 6400 | 141 lb-ft @ 5000 | 10.5:1 |
| 2010 | net | 158 @ 6400 | 141 lb-ft @ 5000 | 10.5:1 |
| 2011 | net | 158 @ 6400 | 141 lb-ft @ 5000 | 10.5:1 |
| 2012 | net | 158 @ 6400 | 141 lb-ft @ 5000 | 10.5:1 |
Factory specification sheet.
| Bore/stroke character | 1.000 — square — bore and stroke are within 5%, a balanced compromise |
|---|---|
| Mean piston speed at 6,000 RPM | 3,386 ft/min — conservative for a street engine |
| Displacement per cylinder | 30.5 ci |
| Static compression | 10.5:1 — 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 |
|---|---|---|
| 2007 | 158 hp | World Engine 2.0 |
| 2008 | 158 hp | World Engine 2.0 |
| 2009 | 158 hp | World Engine 2.0 |
| 2010 | 158 hp | World Engine 2.0 |
| 2011 | 158 hp | World Engine 2.0 |
| 2012 | 158 hp | World Engine 2.0 |
1 factory vehicle, 2007–2012. Each year opens that model's engine table.