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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[edit]
| Engine specs
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| Engine |
Displacement |
Power (US) |
Torque (US)
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| VG30E (N/A) |
2,960 cc (180.62 cu in) |
160 hp @ 5,200 rpm (165 hp on late W-series, 1988–1989) |
173 lb·ft @ 4,000 rpm
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| VG30ET (turbo, 1984 – 5/1987) |
2,960 cc (180.62 cu in) |
200 hp @ 5,200 rpm |
227 lb·ft @ 3,600 rpm
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| VG30ET (turbo, W-series, 5/1987 – 1989) |
2,960 cc (180.62 cu in) |
205 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 |
V-6 OHC
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| VG30ET |
87 mm × 83 mm |
7.8:1 |
V-6 OHC + Nissan-made Garrett-based T3 turbo
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| VG30ET (W series, 5/1987 – 1989) |
87 mm × 83 mm |
8.3:1 |
V-6 OHC + Nissan-made Garrett-based T25 turbo
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Oil change[edit]
| Engine |
Capacity (w/ filter) |
Capacity (w/o filter) |
Recommended viscosity
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| VG30E |
4.0 L (4-1/4 US qt) |
3.6 L (3-7/8 US qt) |
10W-30 (preferred above −18 °C / 0 °F)
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| VG30ET |
4.0 L (4-1/4 US qt) |
3.6 L (3-7/8 US qt) |
10W-30 (preferred above −18 °C / 0 °F)
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- Change interval: VG30E every 7,500 mi (12,000 km) or 6 months; VG30ET every 5,000 mi (8,000 km) or 6 months; filter every second oil change
- Drain plug torque: 22–29 lb·ft (29–39 N·m)
Transmission fluid[edit]
| Trans |
Type |
Capacity
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| FS5W71C (5-speed MT) |
API GL-4, 75W-90 (non-turbo) |
1.9 L (4 US pt) (1986); 2.0 L (4-1/4 US pt) (1987)
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| FS5R90A / BW T-5 (5-speed MT, 1986 turbo) |
API GL-4, 80W-90 (turbo) |
1.9 L (4 US pt)
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| FS5R30A (5-speed MT, 1987 turbo) |
API GL-4, 80W-90 (turbo) |
2.4 L (5-1/8 US pt)
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| E4N71B (4-speed AT) |
Type DEXRON ATF |
7.0 L (7-3/8 US qt)
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Coolant[edit]
- System capacity (without reservoir): VG30E 10.5 L (11-1/8 US qt); VG30ET 11.0 L (11-5/8 US qt); reservoir tank 0.8 L (7/8 US qt)
- Anti-freeze: ethylene-glycol base
- Thermostat opens: 76.5 °C (170 °F)
Spark plugs[edit]
| Engine |
OEM plug (standard type) |
Gap
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| VG30E |
BCPR6ES-11 |
1.0–1.1 mm (0.039–0.043 in)
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| VG30ET |
BCPR6E-11 |
1.0–1.1 mm (0.039–0.043 in)
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Timing belt[edit]
Tire sizes (stock)[edit]
| Model (1986–1987) |
Front |
Rear
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| VG30E (N/A) |
P215/60R15 90H |
P215/60R15 90H
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| VG30ET (turbo) |
225/50VR16 |
225/50VR16
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- Factory rim: 15 × 6-1/2 JJ (VG30E), 16 × 7 JJ (VG30ET)
Specs from the 1986/1987 FSMs (EM, GI, LC, MA sections; see How to verify); power figures and W-series data from xenonzcar (engine specs, general specs, W-series). Other 1984–85 and 1988–89 values may differ.
Z31 reference[edit]
Related Z-car content[edit]
- S30 — 240Z / 260Z / 280Z (1970–1978)
- S130 — 280ZX (1979–1983), predecessor
- Z32 — 300ZX (1990–2000), successor
Static site archives[edit]
Static Archives — 15 preserved sites including z31.com, thumper300zx, xenonzcar, zhome, robrobinette, msextra, nistune, and more.
Getting started[edit]
