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Jeep 1.4 FIRE MultiAir Turbo specs: 83 ci (1.4L) 4-cylinder, 2.835 x 3.307 in (72 x 84 mm) bore and stroke, 9.8:1 compression. Rated 160 hp, 2017–2018.
The Jeep 1.4 FIRE MultiAir Turbo is undersquare — the 3.3071" stroke exceeds the 2.8346" bore by 14.3% — a layout that trades peak RPM for leverage and torque low in the range. The 3.3071" stroke does not reach 4,000 ft/min of mean piston speed until about 7,250 RPM, so piston speed is not what limits this engine's revs — valvetrain and breathing are. Each of the 4 cylinders displaces 20.8 ci (340 cc).
9.8:1 is in the range that usually runs on pump premium.
2 factory variants share these dimensions, rated at 160 hp across 2017–2018.
| Displacement | 83 ci / 1.4 L |
|---|---|
| Bore | 2.8346" |
| Stroke | 3.3071" |
| Cylinders | 4 |
| Configuration | I4 |
| Compression ratio | 9.8:1 |
| Bore/stroke ratio | 0.857 |
| Fuel type | gas |
|---|---|
| Redline | 6,500 rpm (factory limit) |
| Advertised HP | 160 hp |
| Years | 2017–2018 |
| Year | Version | HP @ rpm | Torque @ rpm | Comp. |
|---|---|---|---|---|
| 2017 | net | 160 @ 5500 | 184 lb-ft @ 2500 | 9.8:1 |
| 2018 | net | 160 @ 5500 | 184 lb-ft @ 2500 | 9.8:1 |
Factory specification sheet.
| Bore/stroke character | 0.857 — undersquare — stroke exceeds bore, which favours low-end torque |
|---|---|
| Mean piston speed at 6,000 RPM | 3,307 ft/min — conservative for a street engine |
| Displacement per cylinder | 20.8 ci |
| Static compression | 9.8:1 — 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 |
|---|---|---|
| 2017 | 160 hp | 1.4 FIRE MultiAir Turbo |
| 2018 | 160 hp | 1.4 FIRE MultiAir Turbo |
1 factory vehicle, 2017–2018. Each year opens that model's engine table.