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839 edits
Quick-reference specs corrected to 1986/1987 FSM values (capacities, thermostat, plugs, gearbox names, tires); uncited specs (power/torque, W-series row, filter part no., Nissan plug part nos.) removed; source note added
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{| class="wikitable" style="width:100%"
{| class="wikitable" style="width:100%"
! colspan="4" | Engine specs
! colspan="2" | Engine specs
|-
|-
! Engine !! Displacement !! Power (US) !! Torque (US)
! Engine !! Displacement
|-
|-
| VG30E (N/A) || 2,960 cc (3.0 L) || 160 hp @ 5,200 rpm || 174 lb·ft @ 4,000 rpm
| VG30E (N/A) || 2,960 cc (180.62 cu in)
|-
|-
| VG30ET (turbo) || 2,960 cc (3.0 L) || 200 hp @ 5,200 rpm || 227 lb·ft @ 3,600 rpm
| VG30ET (turbo) || 2,960 cc (180.62 cu in)
|}
|}


Line 21: Line 21:
! Engine !! Bore × Stroke !! Compression !! Configuration
! Engine !! Bore × Stroke !! Compression !! Configuration
|-
|-
| VG30E || 87 mm × 83 mm || 9.0:1 || V6 SOHC 12-valve
| VG30E || 87 mm × 83 mm || 9.0:1 || V-6 OHC
|-
|-
| VG30ET || 87 mm × 83 mm || 7.8:1 || V6 SOHC 12-valve + IHI turbo
| VG30ET || 87 mm × 83 mm || 7.8:1 || V-6 OHC, turbocharged
|-
| VG30ET (W series) || 87 mm × 83 mm || 8.3:1 || V6 SOHC 12-valve + T25 watercooled turbo
|}
|}


Line 32: Line 30:
{| class="wikitable"
{| class="wikitable"
|-
|-
! Engine !! Filter !! Capacity (w/ filter) !! Recommended viscosity
! Engine !! Capacity (w/ filter) !! Capacity (w/o filter) !! Recommended viscosity
|-
|-
| VG30E || Nissan 15208-43G00 (or equivalent) || 3.75 qt (3.6 L) || 10W-30 (factory) · 5W-30 acceptable
| 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)
|-
|-
| VG30ET || Nissan 15208-43G00 (or equivalent) || 3.75 qt (3.6 L) || 10W-30 (factory) · 5W-30 acceptable
| 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)
|}
|}


* Change interval: every 3,000 mi (conventional) or 5,000 mi (synthetic)
* 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)
* Drain plug torque: 22–29 lb·ft (29–39 N·m)


Line 48: Line 46:
! Trans !! Type !! Capacity
! Trans !! Type !! Capacity
|-
|-
| FS5W71C (5-speed MT) || GL-4 MTF (75W-90 or 80W-90) || 2.5 qt (2.4 L)
| 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)
|-
| FS5R90A / BW T-5 (5-speed MT, 1986 turbo) || API GL-4, 80W-90 (turbo) || 1.9 L (4 US pt)
|-
|-
| RS5F50A (5-speed MT, 1988–89 N/A) || GL-4 MTF (75W-90) || 2.4 qt (2.3 L)
| FS5R30A (5-speed MT, 1987 turbo) || API GL-4, 80W-90 (turbo) || 2.4 L (5-1/8 US pt)
|-
|-
| RE4W03A (4-speed AT) || Dexron II/III ATF || 7.4 qt total (3.2 qt service fill)
| E4N71B (4-speed AT) || Type DEXRON ATF || 7.0 L (7-3/8 US qt)
|}
|}


=== Coolant ===
=== Coolant ===


* System capacity: ~8.5 qt (8.1 L)
* 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)
* Factory spec: 50/50 green ethylene-glycol coolant
* Anti-freeze: ethylene-glycol base
* Thermostat opens: 82 °C (180 °F)
* Thermostat opens: 76.5 °C (170 °F)


=== Spark plugs ===
=== Spark plugs ===
Line 65: Line 65:
{| class="wikitable"
{| class="wikitable"
|-
|-
! Engine !! OEM plug !! Gap
! Engine !! OEM plug (standard type) !! Gap
|-
|-
| VG30E || NGK BKR5E-11 / Nissan 22401-01P15 || 1.1 mm (0.043 in)
| VG30E || BCPR6ES-11 || 1.0–1.1 mm (0.039–0.043 in)
|-
|-
| VG30ET || NGK BKR6E-11 / Nissan 22401-01P16 || 1.1 mm (0.043 in)
| VG30ET || BCPR6E-11 || 1.0–1.1 mm (0.039–0.043 in)
|}
|}


Line 81: Line 81:
{| class="wikitable"
{| class="wikitable"
|-
|-
! Year !! Front !! Rear
! Model (1986–1987) !! Front !! Rear
|-
| 1984–1985 || 205/60R15 || 225/50R15
|-
|-
| 1986–1989 || 205/60R15 || 225/50R15
| VG30E (N/A) || P215/60R15 90H || P215/60R15 90H
|-
|-
| 1987–1989 2+2 || 205/60R15 || 225/50R15
| VG30ET (turbo) || 225/50VR16 || 225/50VR16
|}
|}


* Factory rim: 15 × 6.5 JJ (front), 15 × 7.0 JJ (rear)
* Factory rim: 15 × 6-1/2 JJ (VG30E), 16 × 7 JJ (VG30ET)
 
<small>Specs from the 1986 and 1987 Nissan 300ZX FSMs (EM, GI, LC, MA sections; see [[Z31/Nuts and Bolts#How to verify|How to verify]]). 1984–85 and 1988–89 may differ.</small>


== Z31 reference ==
== Z31 reference ==

Revision as of 22:13, 20 October 2026

Welcome to the Z31 Library — a community-maintained reference for the Nissan 300ZX (Z31, 1984–1989).

Z31 quick reference

Engine specs
Engine Displacement
VG30E (N/A) 2,960 cc (180.62 cu in)
VG30ET (turbo) 2,960 cc (180.62 cu in)
Engine internal specs
Engine Bore × Stroke Compression Configuration
VG30E 87 mm × 83 mm 9.0:1 V-6 OHC
VG30ET 87 mm × 83 mm 7.8:1 V-6 OHC, turbocharged

Oil change

Engine Capacity (w/ filter) Capacity (w/o filter) Recommended viscosity
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)
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)
  • 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

Trans Type Capacity
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)
FS5R90A / BW T-5 (5-speed MT, 1986 turbo) API GL-4, 80W-90 (turbo) 1.9 L (4 US pt)
FS5R30A (5-speed MT, 1987 turbo) API GL-4, 80W-90 (turbo) 2.4 L (5-1/8 US pt)
E4N71B (4-speed AT) Type DEXRON ATF 7.0 L (7-3/8 US qt)

Coolant

  • 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

Engine OEM plug (standard type) Gap
VG30E BCPR6ES-11 1.0–1.1 mm (0.039–0.043 in)
VG30ET BCPR6E-11 1.0–1.1 mm (0.039–0.043 in)

Timing belt

Tire sizes (stock)

Model (1986–1987) Front Rear
VG30E (N/A) P215/60R15 90H P215/60R15 90H
VG30ET (turbo) 225/50VR16 225/50VR16
  • Factory rim: 15 × 6-1/2 JJ (VG30E), 16 × 7 JJ (VG30ET)

Specs from the 1986 and 1987 Nissan 300ZX FSMs (EM, GI, LC, MA sections; see How to verify). 1984–85 and 1988–89 may differ.

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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