See other engines in this family
Isuzu G200Z specs: 1.9L (116 ci) 4-cylinder, 87 x 82 mm (3.4252 x 3.2283 in) bore and stroke. Built 1984–1987. Used in the Isuzu Impulse and Isuzu Pickup.
The Isuzu G200Z is oversquare — the 3.4252" bore exceeds the 3.2283" stroke by 6.1% — a layout that favors airflow and RPM over leverage at the crank. The 3.2283" stroke does not reach 4,000 ft/min of mean piston speed until about 7,450 RPM, so piston speed is not what limits this engine's revs — valvetrain and breathing are. Each of the 4 cylinders displaces 29.0 ci (475 cc).
It is one of 2 engines in the Isuzu 116ci family, all of them 116 ci — the differences between them are in compression, heads and rating, not displacement. 4 factory variants share these dimensions across 1984–1987.
| Displacement | 116 ci / 1.9 L |
|---|---|
| Bore | 3.4252" |
| Stroke | 3.2283" |
| Cylinders | 4 |
| Configuration | I4 |
| Bore/stroke ratio | 1.061 |
| Fuel type | gas |
|---|---|
| Years | 1984–1987 |
| Bore/stroke character | 1.061 — oversquare — bore exceeds stroke, which favours higher RPM and larger valves |
|---|---|
| Mean piston speed at 6,000 RPM | 3,228 ft/min — conservative for a street engine |
| Displacement per cylinder | 29.0 ci |
Each link opens the calculator with this engine's specs already filled in.
These records share identical bore, stroke, displacement and compression. They differ by model year and factory power rating.
| Year | Advertised HP | Code |
|---|---|---|
| 1984 | — | G200Z |
| 1985 | — | G200Z |
| 1986 | — | G200Z |
| 1987 | — | G200Z |
3 factory vehicles, 1983–1987. Each year opens that model's engine table.