Bore, stroke, displacement and compression for all 3 Suzuki 79ci engines, compared side by side. Plus rod ratio and head specs where published.
| Displacement | 79 ci |
|---|---|
| Cylinders | 4 |
| Bore | 2.913" |
| Stroke | 2.972–3.031" |
| Compression | 8.9–9.5:1 |
| Advertised power | 63–66 hp |
| Years | 1986–1995 |
| Engine | Displacement | Bore × Stroke | CR | HP |
|---|---|---|---|---|
| G13A | 79 ci | 2.9134" × 3.0315" | 8.9:1 | 63 |
| Suzuki 79ci (1990–1991) | 79 ci | 2.9134" × 3.0315" | — | — |
| G13BA | 79 ci | 2.9134" × 2.9724" | 9.5:1 | 66 |
Every engine here shares a 2.9134" bore; displacement varies by stroke alone, which is the signature of a family built on one block with different cranks.
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.