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Volvo B5254T / B5244T specs: 149 ci 5-cylinder, 83 x 90 mm (3.2677 x 3.5433 in) bore and stroke, 9:1 compression. Rated 190 hp, 1998–2000.
The Volvo B5254T / B5244T 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).
9:1 is low by modern standards and generally happy on regular pump fuel.
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. 3 factory variants share these dimensions, rated at 190 hp across 1998–2000.
| Displacement | 149 ci |
|---|---|
| Bore | 3.2677" |
| Stroke | 3.5433" |
| Cylinders | 5 |
| Compression ratio | 9:1 |
| Bore/stroke ratio | 0.922 |
| Fuel type | gas |
|---|---|
| Advertised HP | 190 hp |
| Years | 1998–2000 |
| Year | Version | HP @ rpm | Torque @ rpm | Comp. |
|---|---|---|---|---|
| 1999 | B5254T net | 190 @ 5100 | 199 lb-ft @ 1800 | 9:1 |
Factory specification sheet.
| 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 | 9:1 — low by modern standards, generally happy on regular pump fuel |
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 | — | B5254T / B5244T |
| 1999 | 190 hp | B5254T / B5244T |
| 2000 | — | B5254T / B5244T |
2 factory vehicles, 1997–2003. Each year opens that model's engine table.