Bore, stroke, displacement and compression for all 7 Mazda Skyactiv-D engines, compared side by side. Plus rod ratio and head specs where published.
| Displacement | 91.5–201.4 ci |
|---|---|
| Cylinders | 4, 6 |
| Bore | 3.071–3.386" |
| Stroke | 3.087–3.709" |
| Compression | 14.0–16.2:1 |
| Advertised power | 105–254 hp |
| Engine | Displacement | Bore × Stroke | CR | HP |
|---|---|---|---|---|
| 33 I6 | 201.4 ci | 3.3858" × 3.7087" | 15.2:1 | 254 |
| T3-VPTS | 200.3 ci | 3.3858" × 3.7087" | 16.2:1 | 254 |
| 33 I6 Turbo | 200.3 ci | 3.3858" × 3.7087" | 15.2:1 | 254 |
| SH-VPTS | 134.2 ci | 3.3858" × 3.7087" | 14:1 | 173 |
| SH-VPTS | 134 ci | 3.3858" × 3.7087" | 14.4:1 | 175 |
| SH-VPTS | 133.7 ci | 3.3858" × 3.7087" | 14:1 | 173–175 |
| S5-DPTS | 91.5 ci | 3.0709" × 3.0866" | 14.8:1 | 105 |
Both bore and stroke vary across the family, so these are separate castings rather than variations on one block.
Compression spans 14:1 to 16.2:1, so fuel requirements differ meaningfully between members — worth checking before assuming parts interchange.
6 of 7 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.