See other engines in this family
The same engine also has a main page: Nissan VQ30DE.
Nissan VQ30DE specs: 3.0L (182 ci) 6-cylinder, 93 x 73.3 mm (3.6614 x 2.8858 in) bore and stroke, 10:1 compression. Rated 190 hp, 1995–1999.
The Nissan VQ30DE 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 30.3 ci (497 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 19 engines in the VQ family, sitting between the 121.9 ci and 243.8 ci members. 5 factory variants share these dimensions, rated at 190 hp across 1995–1999.
| Displacement | 182 ci / 3 L |
|---|---|
| Bore | 3.6614" |
| Stroke | 2.8858" |
| Cylinders | 6 |
| Configuration | V6 |
| Compression ratio | 10:1 * |
| Bore/stroke ratio | 1.269 |
* Compression ratio from a single source; not yet cross-verified.
| Block material | aluminum |
|---|---|
| Head material | aluminum |
| Valvetrain | DOHC |
| Fuel type | gas |
| Advertised HP | 190 hp |
| Years | 1995–1999 |
| Year | Version | HP @ rpm | Torque @ rpm | Comp. |
|---|---|---|---|---|
| 1997 | VQ30DE net | 190 @ 5600 | 205 lb-ft @ 4000 | — |
| 1998 | VQ30DE net | 190 @ 5600 | 205 lb-ft @ 4000 | — |
| 1999 | VQ30DE net | 190 @ 5600 | 205 lb-ft @ 4000 | — |
Factory specification sheet.
| 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 | 30.3 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 |
|---|---|---|
| 1995 | 190 hp | VQ30DE |
| 1996 | 190 hp | VQ30DE |
| 1997 | 190 hp | VQ30DE |
| 1998 | 190 hp | VQ30DE |
| 1999 | 190 hp | VQ30DE |
1 factory vehicle, 1995–2001. Each year opens that model's engine table.