Bore, stroke, displacement and compression for all 4 Hyundai Kappa engines, compared side by side. Plus rod ratio and head specs where published.
| Displacement | 61–83.5 ci |
|---|---|
| Cylinders | 3, 4 |
| Bore | 2.795–2.835" |
| Stroke | 3.102–3.307" |
| Compression | 10.0–10.5:1 |
| Advertised power | 69–100 hp |
| Engine | Displacement | Bore × Stroke | CR | HP |
|---|---|---|---|---|
| G4LC | 83.5 ci | 2.8346" × 3.3071" | 10.5:1 | 100 |
| G4LA | 76.2 ci | 2.7953" × 3.1024" | 10.5:1 | 84 |
| G3LA | 61 ci | 2.7953" × 3.3071" | 10.5:1 | 69 |
| G3LC | 61 ci | 2.7953" × 3.3071" | 10:1 | 100 |
Both bore and stroke vary across the family, so these are separate castings rather than variations on one block.
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.