See other engines in this family
The same engine also has a main page: Nissan VQ30DET.
Infiniti VQ30DET specs: 3.0L (182.9 ci) 6-cylinder, 93 x 73.3 mm (3.6614 x 2.8858 in) bore and stroke, 9:1 compression. Rated 227 hp. DOHC.
The Infiniti VQ30DET is oversquare — the 3.6614" bore exceeds the 2.8858" stroke by 26.9% — a layout that favors airflow and RPM over leverage at the crank. The 2.8858" stroke does not reach 4,000 ft/min of mean piston speed until about 8,300 RPM, so piston speed is not what limits this engine's revs — valvetrain and breathing are. Each of the 6 cylinders displaces 30.5 ci (500 cc).
9:1 on aluminum heads is low by modern standards and generally happy on regular pump fuel.
It is one of 13 engines in the VQ family, sitting between the 121.9 ci and 243.9 ci members. Factory fitments include the Infiniti I30 (Japan), Infiniti Y34 Gloria/Cedric (Japan only), Infiniti Y33 Cima (Japan only) and 4 others.
| Displacement | 182.9 ci / 3 L |
|---|---|
| Bore | 3.6614" |
| Stroke | 2.8858" |
| Cylinders | 6 |
| Compression ratio | 9:1 |
| Bore/stroke ratio | 1.269 |
| Block material | aluminum |
|---|---|
| Head material | aluminum |
| Valvetrain | DOHC |
| Fuel type | gas |
| Advertised HP | 227 hp |
| Bore/stroke character | 1.269 — oversquare — bore exceeds stroke, which favours higher RPM and larger valves |
|---|---|
| Mean piston speed at 6,000 RPM | 2,886 ft/min — conservative for a street engine |
| Displacement per cylinder | 30.5 ci |
| Static compression | 9:1 — low by modern standards, generally happy on regular pump fuel |
Each link opens the calculator with this engine's specs already filled in.