Editing Z31/GeneralSpecs php (section)

==== VG30DE ====

![VG30DE Engine](images/Engine/300zrvg30de.jpg)

The VG30DE was an early version of the motor used in the Later 90+ 300zx. It featured a slightly different block, Dual Overhead Cam Heads, and 24 valve with Nissan's own version of variable valve timing (NVCV) for increased high RPM efficiency. The production blocks and production head castings were used successfully in the Nissan GTP ZX-Turbo and NPT-90 race cars which won the IMSA GT Championship three years in a row.

The Z31 VG30DE engines differ from the Z32 and later model VG30DE engines in a few different ways. First the Crank snout is a different size, The Heads have round exhaust ports vs the Z32 and later oval ports. The Intake Manifold is a different bolt pattern. Also the Timing belt is a square tooth Part # 13028-16V25 or 13028-45P25 vs round tooth on the z32 part# 13028-45P86. The easiest way to spot a VG30DE block is there are only 8 head bolts vs the VG30E(T) having 13.

| Spec | Value |
|---|---|
| Displacement | 2960 cc (181 cu. in) |
| Bore and Stroke | 87.0 X 83.0 |
| Compression Ratio | 10.0:1 |
| Horsepower | 190 Hp at 6000RPM |
| Torque | 25.0Kgm (181 Ft. Lbs)at 4400 RPM |