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Subaru EG33 specs: 3.3L (202 ci) 6-cylinder, 96.9 x 75 mm (3.8150 x 2.9528 in) bore and stroke, 10:1 compression. Built 1992–1997. Used in the Subaru SVX.
The Subaru EG33 is oversquare — the 3.815" bore exceeds the 2.9528" stroke by 29.2% — a layout that favors airflow and RPM over leverage at the crank. The 2.9528" stroke does not reach 4,000 ft/min of mean piston speed until about 8,150 RPM, so piston speed is not what limits this engine's revs — valvetrain and breathing are. Each of the 6 cylinders displaces 33.7 ci (552 cc).
10:1 is in the range that usually runs on pump premium.
6 factory variants share these dimensions across 1992–1997.
| Displacement | 202 ci / 3.3 L |
|---|---|
| Bore | 3.815" |
| Stroke | 2.9528" |
| Cylinders | 6 |
| Compression ratio | 10:1 * |
| Bore/stroke ratio | 1.292 |
* Compression ratio from a single source; not yet cross-verified.
| Fuel type | gas |
|---|---|
| Years | 1992–1997 |
| Bore/stroke character | 1.292 — oversquare — bore exceeds stroke, which favours higher RPM and larger valves |
|---|---|
| Mean piston speed at 6,000 RPM | 2,953 ft/min — conservative for a street engine |
| Displacement per cylinder | 33.7 ci |
| Static compression | 10:1 — in the range that usually runs on pump premium |
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 |
|---|---|---|
| 1992 | — | EG33 |
| 1993 | — | EG33 |
| 1994 | — | EG33 |
| 1995 | — | EG33 |
| 1996 | — | EG33 |
| 1997 | — | EG33 |
1 factory vehicle, 1992–1997. Each year opens that model's engine table.