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Infiniti VG33E specs: 3.3L (200 ci) 6-cylinder, 91.5 x 83 mm (3.6024 x 3.2677 in) bore and stroke, 8.9:1 compression. Rated 168 hp. SOHC.
The Infiniti VG33E is oversquare — the 3.6024" bore exceeds the 3.2677" stroke by 10.2% — a layout that favors airflow and RPM over leverage at the crank. The 3.2677" stroke does not reach 4,000 ft/min of mean piston speed until about 7,350 RPM, so piston speed is not what limits this engine's revs — valvetrain and breathing are. Each of the 6 cylinders displaces 33.3 ci (546 cc).
8.9:1 on aluminum heads is low by modern standards and generally happy on regular pump fuel.
It is one of 8 engines in the VG family, the largest at 200 ci. Factory fitments include the Infiniti QX4.
| Displacement | 200 ci / 3.3 L |
|---|---|
| Bore | 3.6024" |
| Stroke | 3.2677" |
| Cylinders | 6 |
| Compression ratio | 8.9:1 |
| Bore/stroke ratio | 1.102 |
| Block material | cast iron |
|---|---|
| Head material | aluminum |
| Valvetrain | SOHC |
| Fuel type | gas |
| Advertised HP | 168 hp |
| Bore/stroke character | 1.102 — oversquare — bore exceeds stroke, which favours higher RPM and larger valves |
|---|---|
| Mean piston speed at 6,000 RPM | 3,268 ft/min — conservative for a street engine |
| Displacement per cylinder | 33.3 ci |
| Static compression | 8.9:1 — low by modern standards, generally happy on regular pump fuel |
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