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Kia G1.6 T-GDi specs: 1.6L (97.56 ci) 4-cylinder, 75.6 x 89 mm (2.9764 x 3.5039 in) bore and stroke, 10:1 compression. Rated 177 hp. DOHC.
The Kia G1.6 T-GDi is undersquare — the 3.5039" stroke exceeds the 2.9764" bore by 15.1% — a layout that trades peak RPM for leverage and torque low in the range. The 3.5039" stroke puts mean piston speed at 4,000 ft/min around 6,850 RPM, which is where a production bottom end is generally considered at its limit. Each of the 4 cylinders displaces 24.4 ci (400 cc).
10:1 on aluminum heads is in the range that usually runs on pump premium; aluminum sheds heat faster than iron, which makes the same number a little more forgiving.
It is one of 13 engines in the Smartstream family, sitting between the 61.02 ci and 213.58 ci members. Factory fitments include the Kia Sportage, Kia Seltos, Kia Forte GT.
| Displacement | 97.56 ci / 1.6 L |
|---|---|
| Bore | 2.9764" |
| Stroke | 3.5039" |
| Cylinders | 4 |
| Compression ratio | 10:1 |
| Bore/stroke ratio | 0.849 |
| Block material | aluminum |
|---|---|
| Head material | aluminum |
| Valvetrain | DOHC |
| Fuel type | gas |
| Advertised HP | 177 hp |
| Bore/stroke character | 0.849 — undersquare — stroke exceeds bore, which favours low-end torque |
|---|---|
| Mean piston speed at 6,000 RPM | 3,504 ft/min — in the range typical of performance street engines |
| Displacement per cylinder | 24.4 ci |
| Static compression | 10:1 — in the range that usually runs on pump premium |
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