Mercury 2.3L Duratec Specs
Mercury 2.3L Duratec engine specs: 140 ci (2.3L), 4-cylinder, 3.4449" bore x 3.7008" stroke, 9.7:1 compression.
Dimensions
| Displacement | 140 ci / 2.3 L |
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| Bore | 3.4449" |
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| Stroke | 3.7008" |
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| Cylinders | 4 |
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| Compression ratio | 9.7:1 |
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| Bore/stroke ratio | 0.931 |
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Construction
| Block material | aluminum |
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| Head material | aluminum |
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| Valvetrain | DOHC |
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| Fuel type | gas |
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| Advertised HP | 152–153 hp |
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What these numbers mean
| Bore/stroke character | 0.931 — undersquare — stroke exceeds bore, which favours low-end torque |
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| Mean piston speed at 6,000 RPM | 3,701 ft/min — in the range typical of performance street engines |
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| Displacement per cylinder | 35.0 ci |
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| Static compression | 9.7:1 — in the range that usually runs on pump premium |
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Variants sharing these dimensions (2)
These records share identical bore, stroke, displacement and compression. They differ by model year and factory power rating.
| Year | Advertised HP | Code |
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| — | 152 hp | 2.3L Duratec, 2.3 I4 |
| — | 153 hp | 2.3L Duratec |
Vehicles (2)
- Mercury Mariner
- Mercury Milan
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