Bore, stroke, displacement and compression for all 19 Honda D-series engines, compared side by side. Plus rod ratio and head specs where published.
| Displacement | 82–103.7 ci |
|---|---|
| Cylinders | 4 |
| Bore | 2.913–2.953" |
| Stroke | 2.992–3.716" |
| Compression | 9.1–9.9:1 |
| Advertised power | 75–130 hp |
| Years | 1988–2000 |
| Engine | Displacement | Bore × Stroke | CR | HP |
|---|---|---|---|---|
| D17A1 | 103.7 ci | 2.9528" × 3.7165" | 9.5:1 | 115 |
| D-series · 2.953" × 3.716" · 9.9:1 | 103.7 ci | 2.9528" × 3.7165" | 9.9:1 | 117–127 |
| D16A1 | 97 ci | 2.9528" × 3.5433" | 9.3:1 | 113 |
| D16A3 | 97 ci | 2.9528" × 3.5433" | 9.5:1 | 118 |
| D16A6 | 97 ci | 2.9528" × 3.5433" | 9.1:1 | 108 |
| D-series · 2.953" × 3.543" · 9.4:1 | 97 ci | 2.9528" × 3.5433" | 9.4:1 | 106–115 |
| D16Y8 | 97 ci | 2.9528" × 3.5433" | 9.6:1 | 127 |
| D16Z6 | 97 ci | 2.9528" × 3.5433" | 9.2:1 | 125 |
| D16A6 | 97 ci | 2.9528" × 3.5433" | — | 105–108 |
| D16Z6 | 97 ci | 2.9528" × 3.5433" | — | 125 |
| D16Y7 | 97 ci | 2.9528" × 3.5433" | — | 106 |
| D16Y5 | 97 ci | 2.9528" × 3.5433" | — | 115 |
| D16Y8 | 97 ci | 2.9528" × 3.5433" | — | 127 |
| D16B5 | 97 ci | 2.9528" × 3.5433" | — | — |
| D15B (non-VTEC) | 91.5 ci | 2.9528" × 3.3268" | 9.2:1 | 105 |
| D15B (VTEC) | 91.5 ci | 2.9528" × 3.3268" | 9.3:1 | 130 |
| D15A | 91.5 ci | 2.9134" × 3.4055" | 9.2:1 | 92 |
| D14A | 85.4 ci | 2.9528" × 3.1102" | 9.1:1 | 75 |
| D13B | 82 ci | 2.9528" × 2.9921" | 9.2:1 | 82 |
Both bore and stroke vary across the family, so these are separate castings rather than variations on one block.
18 of 19 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.