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Lincoln EcoBoost specs: 122 ci (2.0L) 4-cylinder, 3.445 x 3.272 in (87.5 x 83.1 mm) bore and stroke, 10:1 compression. Rated 188-250 hp. DOHC.
The Lincoln EcoBoost is oversquare — the 3.4449" bore exceeds the 3.2717" stroke by 5.3% — a layout that favors airflow and RPM over leverage at the crank. The 3.2717" 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).
10:1 on aluminum heads is in the range that usually runs on pump premium; aluminum sheds heat faster than iron, which makes the same number a little more forgiving.
It is one of 10 engines in the EcoBoost family, the smallest at 122 ci. 2 factory variants share these dimensions, rated from 188 to 250 hp. Factory fitments include the Lincoln Nautilus, Lincoln Corsair, Lincoln MKZ and 1 other.
| Displacement | 122 ci / 2 L |
|---|---|
| Bore | 3.4449" |
| Stroke | 3.2717" |
| Cylinders | 4 |
| Compression ratio | 10:1 |
| Bore/stroke ratio | 1.053 |
| Block material | aluminum |
|---|---|
| Head material | aluminum |
| Valvetrain | DOHC |
| Fuel type | gas |
| Advertised HP | 188–250 hp |
| Bore/stroke character | 1.053 — oversquare — bore exceeds stroke, which favours higher RPM and larger valves |
|---|---|
| Mean piston speed at 6,000 RPM | 3,272 ft/min — conservative for a street engine |
| Displacement per cylinder | 30.5 ci |
| Static compression | 10:1 — 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 |
|---|---|---|
| — | 188 hp | 2.0L EcoBoost I4 Hybrid |
| — | 250 hp | 2.0L EcoBoost Gen 2, 2.0 I4 Gen2, 2.0L EcoBoost I4 Gen 2, 2.0L EcoBoost I4 Gen2, 2.0L EcoBoost, 2.0L EcoBoost Gen2, 2.0L EcoBoost I4, 2.0 EcoBoost Gen 2 |