See other engines in this family
Jeep Hurricane specs: 122 ci (2.0L) 4-cylinder, 3.307 x 3.543 in (84 x 90 mm) bore and stroke, 10:1 compression. Rated 270-375 hp. Rod ratio and piston speed.
The Jeep Hurricane is undersquare — the 3.5433" stroke exceeds the 3.3071" bore by 6.7% — a layout that trades peak RPM for leverage and torque low in the range. The 3.5433" stroke puts mean piston speed at 4,000 ft/min around 6,750 RPM, which is where a production bottom end is generally considered at its limit. 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 4 engines in the Hurricane family, the smallest at 122 ci. 5 factory variants share these dimensions, rated from 270 to 375 hp. Factory fitments include the Jeep Wrangler (JL), Jeep Cherokee (KL), Jeep Grand Cherokee (WL) and 8 others.
| Displacement | 122 ci / 2 L |
|---|---|
| Bore | 3.3071" |
| Stroke | 3.5433" |
| Cylinders | 4 |
| Compression ratio | 10:1 |
| Bore/stroke ratio | 0.933 |
| Block material | aluminum |
|---|---|
| Head material | aluminum |
| Valvetrain | DOHC |
| Fuel type | gas |
| Advertised HP | 270–375 hp |
| Bore/stroke character | 0.933 — undersquare — stroke exceeds bore, which favours low-end torque |
|---|---|
| Mean piston speed at 6,000 RPM | 3,543 ft/min — in the range typical of performance street engines |
| 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 |
|---|---|---|
| — | 270 hp | GME T4 |
| — | 270 hp | GME T4 |
| — | 270 hp | GME T4 |
| — | 270 hp | GME T4, GMET4, EC1, ECU, GME-T4 |
| — | 375 hp | GME-T4-PHEV |