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Jeep VM Motori 2.8 CRD specs: 171 ci (2.8L) 4-cylinder, 3.70 x 3.94 in (94 x 100.1 mm) bore and stroke, 17.5:1 compression. Rated 160 hp, 2005–2006.
The Jeep VM Motori 2.8 CRD is undersquare — the 3.94" stroke exceeds the 3.7" bore by 6.1% — a layout that trades peak RPM for leverage and torque low in the range. The 3.94" stroke puts mean piston speed at 4,000 ft/min around 6,100 RPM, which is where a production bottom end is generally considered at its limit. Each of the 4 cylinders displaces 42.8 ci (701 cc).
At 17.5:1 this is a compression-ignition engine: the ratio is the heat source that lights the fuel, not a knock limit to be managed.
2 factory variants share these dimensions, rated at 160 hp across 2005–2006.
| Displacement | 171 ci / 2.8 L |
|---|---|
| Bore | 3.7" * |
| Stroke | 3.94" * |
| Cylinders | 4 |
| Configuration | I4 |
| Compression ratio | 17.5:1 |
| Bore/stroke ratio | 0.939 |
* Bore and stroke from a single source; not yet cross-verified.
| Fuel type | diesel |
|---|---|
| Redline | 4,300 rpm (factory limit) |
| Advertised HP | 160 hp |
| Years | 2005–2006 |
| Year | Version | HP @ rpm | Torque @ rpm | Comp. |
|---|---|---|---|---|
| 2005 | net | 160 @ 3800 | 295 lb-ft @ 1800 | 17.5:1 |
| 2006 | net | 160 @ 3800 | 295 lb-ft @ 1800 | 17.5:1 |
Factory specification sheet.
| Bore/stroke character | 0.939 — undersquare — stroke exceeds bore, which favours low-end torque |
|---|---|
| Mean piston speed at 6,000 RPM | 3,940 ft/min — in the range typical of performance street engines |
| Displacement per cylinder | 42.8 ci |
| Static compression | 17.5:1 — high enough that pump premium or better is normally required |
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 |
|---|---|---|
| 2005 | 160 hp | VM Motori 2.8 CRD |
| 2006 | 160 hp | VM Motori 2.8 CRD |
1 factory vehicle, 2005–2006. Each year opens that model's engine table.