See other engines in this family
Volvo B5254T4 specs: 154 ci 5-cylinder, 83 x 93.2 mm (3.2677 x 3.6693 in) bore and stroke, 8.5:1 compression. Rated 300 hp, 2004. Used in the Volvo V70.
The Volvo B5254T4 is undersquare — the 3.6693" stroke exceeds the 3.2677" bore by 10.9% — a layout that trades peak RPM for leverage and torque low in the range. The 3.6693" stroke puts mean piston speed at 4,000 ft/min around 6,550 RPM, which is where a production bottom end is generally considered at its limit. Each of the 5 cylinders displaces 30.8 ci (505 cc).
8.5:1 is low by modern standards and generally happy on regular pump fuel.
It is one of 2 engines in the Volvo 154ci family, all of them 154 ci — the differences between them are in compression, heads and rating, not displacement.
| Displacement | 154 ci |
|---|---|
| Bore | 3.2677" |
| Stroke | 3.6693" |
| Cylinders | 5 |
| Compression ratio | 8.5:1 * |
| Bore/stroke ratio | 0.891 |
* Compression ratio from a single source; not yet cross-verified.
| Fuel type | gas |
|---|---|
| Advertised HP | 300 hp |
| Years | 2004 |
| Year | Version | HP @ rpm | Torque @ rpm | Comp. |
|---|---|---|---|---|
| 2004 | B5254T4 net | 300 @ 5500 * | 295 lb-ft @ 1950-5250 * | 8.5:1 * |
Factory specification sheet. * Not yet cross-verified.
| Bore/stroke character | 0.891 — undersquare — stroke exceeds bore, which favours low-end torque |
|---|---|
| Mean piston speed at 6,000 RPM | 3,669 ft/min — in the range typical of performance street engines |
| Displacement per cylinder | 30.8 ci |
| Static compression | 8.5:1 — low by modern standards, generally happy on regular pump fuel |
Each link opens the calculator with this engine's specs already filled in.
1 factory vehicle, 2004. Each year opens that model's engine table.