Bore, stroke, displacement and compression for all 5 Porsche 201ci engines, compared side by side. Plus rod ratio and head specs where published.
| Displacement | 201 ci |
|---|---|
| Cylinders | 6 |
| Advertised power | 265–322 hp |
| Years | 1978–1992 |
| Engine | Displacement | Bore × Stroke | CR | HP |
|---|---|---|---|---|
| 930/61, 930/63 | 201 ci | — | — | 265 |
| 930/64, 930/63 | 201 ci | — | — | 265 |
| 930/68 | 201 ci | — | — | 282 |
| M30/69 | 201 ci | — | — | 315 |
| Porsche 201ci (1992) | 201 ci | — | — | 322 |
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.