Volvo 149ci specs: 83 x 90 mm (3.2677 x 3.5433 in) bore and stroke, shared by all 5 versions. Displacement, compression and factory ratings, plus rod ratio.
| Displacement | 149 ci |
|---|---|
| Cylinders | 5 |
| Bore | 3.268" |
| Stroke | 3.543" |
| Compression | 9.0–10.5:1 |
| Advertised power | 168–197 hp |
| Years | 1993–2004 |
| Engine | Displacement | Bore × Stroke | CR | HP |
|---|---|---|---|---|
| B5254F | 149 ci | 3.2677" × 3.5433" | 10.5:1 | — |
| B5254T | 149 ci | 3.2677" × 3.5433" | 9:1 | — |
| B5244S | 149 ci | 3.2677" × 3.5433" | 10.3:1 | 168 |
| B5254T / B5244T | 149 ci | 3.2677" × 3.5433" | 9:1 | 190 |
| B5244T3 | 149 ci | 3.2677" × 3.5433" | 9:1 | 197 |
Compression spans 9:1 to 10.5:1, so fuel requirements differ meaningfully between members — worth checking before assuming parts interchange.
All are undersquare — stroke larger than bore, favouring torque low in the range.
Each engine page carries rod ratio, mean piston speed, bore/stroke character and cylinder head specs where published, and links into the calculators with its dimensions already filled in.