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Volkswagen BDP specs: 4.0L (244 ci) 8-cylinder, 84 x 90.2 mm (3.3071 x 3.5512 in) bore and stroke, 10.8:1 compression. Built 2002–2004.
The Volkswagen 244ci (BDP) is undersquare — the 3.5512" stroke exceeds the 3.3071" bore by 6.9% — a layout that trades peak RPM for leverage and torque low in the range. The 3.5512" 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 8 cylinders displaces 30.5 ci (500 cc).
10.8:1 is in the range that usually runs on pump premium.
3 factory variants share these dimensions across 2002–2004.
| Displacement | 244 ci / 4 L |
|---|---|
| Bore | 3.3071" |
| Stroke | 3.5512" |
| Cylinders | 8 |
| Compression ratio | 10.8:1 * |
| Bore/stroke ratio | 0.931 |
* Compression ratio from a single source; not yet cross-verified.
| Fuel type | gas |
|---|---|
| Years | 2002–2004 |
| Bore/stroke character | 0.931 — undersquare — stroke exceeds bore, which favours low-end torque |
|---|---|
| Mean piston speed at 6,000 RPM | 3,551 ft/min — in the range typical of performance street engines |
| Displacement per cylinder | 30.5 ci |
| Static compression | 10.8:1 — 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 |
|---|---|---|
| 2002 | — | BDP |
| 2003 | — | BDP |
| 2004 | — | BDP |
1 factory vehicle, 2002–2004. Each year opens that model's engine table.