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Welcome to the Z31 Library — a community-maintained reference for the Nissan 300ZX (Z31, 1984–1989).
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Z31 quick reference
| Engine specs
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| Engine |
Displacement |
Power (US) |
Torque (US)
|
| VG30E (N/A) |
2,960 cc (3.0 L) |
160 hp @ 5,200 rpm |
174 lb·ft @ 4,000 rpm
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| VG30ET (turbo) |
2,960 cc (3.0 L) |
200 hp @ 5,200 rpm |
227 lb·ft @ 3,600 rpm
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| Engine internal specs
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| Engine |
Bore × Stroke |
Compression |
Configuration
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| VG30E |
87 mm × 83 mm |
9.0:1 |
V6 SOHC 12-valve
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| VG30ET |
87 mm × 83 mm |
7.8:1 |
V6 SOHC 12-valve + IHI turbo
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| VG30ET (W series) |
87 mm × 83 mm |
8.3:1 |
V6 SOHC 12-valve + T25 watercooled turbo
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Oil change
| Engine |
Filter |
Capacity (w/ filter) |
Recommended viscosity
|
| VG30E |
Nissan 15208-43G00 (or equivalent) |
3.75 qt (3.6 L) |
10W-30 (factory) · 5W-30 acceptable
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| VG30ET |
Nissan 15208-43G00 (or equivalent) |
3.75 qt (3.6 L) |
10W-30 (factory) · 5W-30 acceptable
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- Change interval: every 3,000 mi (conventional) or 5,000 mi (synthetic)
- Drain plug torque: 22–29 lb·ft (29–39 N·m)
Transmission fluid
| Trans |
Type |
Capacity
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| FS5W71C (5-speed MT) |
GL-4 MTF (75W-90 or 80W-90) |
2.5 qt (2.4 L)
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| RS5F50A (5-speed MT, 1988–89 N/A) |
GL-4 MTF (75W-90) |
2.4 qt (2.3 L)
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| RE4W03A (4-speed AT) |
Dexron II/III ATF |
7.4 qt total (3.2 qt service fill)
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Coolant
- System capacity: ~8.5 qt (8.1 L)
- Factory spec: 50/50 green ethylene-glycol coolant
- Thermostat opens: 82 °C (180 °F)
Spark plugs
| Engine |
OEM plug |
Gap
|
| VG30E |
NGK BKR5E-11 / Nissan 22401-01P15 |
1.1 mm (0.043 in)
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| VG30ET |
NGK BKR6E-11 / Nissan 22401-01P16 |
1.1 mm (0.043 in)
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Timing belt
Tire sizes (stock)
| Year |
Front |
Rear
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| 1984–1985 |
205/60R15 |
225/50R15
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| 1986–1989 |
205/60R15 |
225/50R15
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| 1987–1989 2+2 |
205/60R15 |
225/50R15
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- Factory rim: 15 × 6.5 JJ (front), 15 × 7.0 JJ (rear)
Z31 reference
Related Z-car content
- S30 — 240Z / 260Z / 280Z (1970–1978)
- S130 — 280ZX (1979–1983), predecessor
- Z32 — 300ZX (1990–2000), successor
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