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Volvo B5244S specs: 149 ci 5-cylinder, 83 x 90 mm (3.2677 x 3.5433 in) bore and stroke, 10.3:1 compression. Rated 168 hp, 1998–2004. Used in the Volvo V70.
The Volvo B5244S is undersquare — the 3.5433" stroke exceeds the 3.2677" bore by 7.8% — 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 5 cylinders displaces 29.8 ci (488 cc).
10.3:1 is in the range that usually runs on pump premium.
It is one of 5 engines in the Volvo 149ci family, all of them 149 ci — the differences between them are in compression, heads and rating, not displacement. 7 factory variants share these dimensions, rated at 168 hp across 1998–2004.
| Displacement | 149 ci |
|---|---|
| Bore | 3.2677" |
| Stroke | 3.5433" |
| Cylinders | 5 |
| Compression ratio | 10.3:1 * |
| Bore/stroke ratio | 0.922 |
* Compression ratio from a single source; not yet cross-verified.
| Fuel type | gas |
|---|---|
| Advertised HP | 168 hp |
| Years | 1998–2004 |
| Year | Version | HP @ rpm | Torque @ rpm | Comp. |
|---|---|---|---|---|
| 2003 | B5244S net | 168 @ 6000 * | 166 lb-ft @ 4500 * | 10.3:1 * |
| 2004 | B5244S net | 168 @ 6000 | 166 lb-ft @ 4500 | — |
Factory specification sheet. * Not yet cross-verified.
| Bore/stroke character | 0.922 — 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 | 29.8 ci |
| Static compression | 10.3:1 — 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 |
|---|---|---|
| 1998 | — | B5244S |
| 1999 | — | B5244S |
| 2000 | — | B5244S |
| 2001 | — | B5244S |
| 2002 | — | B5244S |
| 2003 | 168 hp | B5244S |
| 2004 | 168 hp | B5244S |
1 factory vehicle, 1998–2004. Each year opens that model's engine table.