Saturn I4 specs: 3.228 x 3.543 in (82 x 90 mm) bore and stroke, shared by all 2 versions. Displacement, compression and factory ratings, plus rod ratio.
| Displacement | 116 ci |
|---|---|
| Cylinders | 4 |
| Bore | 3.228" |
| Stroke | 3.543" |
| Compression | 9.3–9.5:1 |
| Advertised power | 85–124 hp |
| Engine | Displacement | Bore × Stroke | CR | HP |
|---|---|---|---|---|
| Saturn I4 · 3.228" × 3.543" · 9.5:1 | 116 ci | 3.2283" × 3.5433" | 9.5:1 | 100–124 |
| 19 Sohc LKO | 116 ci | 3.2283" × 3.5433" | 9.3:1 | 85 |
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.