Z31/Nuts and Bolts

2026-05-24T22:34:43Z

10.10.10.10: Adding Camshaft sprocket bolts as found in Z31-R chat. Torque specs referenced from https://lemon-manuals.la/Nissan-Datsun/1984/300ZX%20V6-2960cc%20SOHC%20Turbo%20%28VG30ET%29/Repair%20and%20Diagnosis/Engine%2C%20Cooling%20and%20Exhaust/Engine/Service%20and%20Repair/Engine%20Disassembly/

= Z31 Nuts & Bolts — Thread Pitch and Torque Specs =

Reference tables for Z31 (1984–1989 Nissan 300ZX) fastener specifications.
All torque values are for clean, dry threads unless noted. N/A = not applicable or spec not established.

== Engine ==

=== VG30E/ET block ===

{| class="wikitable sortable"
|-
! Location !! Thread !! Torque (lb·ft) !! Torque (N·m) !! Notes
|-
| Main bearing cap bolts || M11 × 1.25 || 36–43 || 49–59 || 2-stage; final 90° torque-angle optional
|-
| Rod bearing cap bolts || M9 × 1.25 || 22–27 || 30–36 ||
|-
| Cylinder head bolts || M11 × 1.25 || 62–68 || 84–93 || Cold; retorque after warmup
|-
| Camshaft Sprocket Bolts || M10 × 1.25 || 58–65 || 78–88 || Measured @ 28mm; can use 30mm
|-
| Camshaft bearing cap bolts || M8 × 1.25 || 13–15 || 18–20 ||
|-
| Rocker cover (valve cover) bolts || M6 × 1.0 || 2.9–3.6 || 4–5 ||
|-
| Oil pan bolts (to block) || M6 × 1.0 || 5–6 || 7–8 ||
|-
| Oil drain plug || M14 × 1.5 || 22–29 || 29–39 ||
|-
| Oil filter adapter || M20 × 1.5 || 12–15 || 16–20 ||
|-
| Spark plugs || M14 × 1.25 || 14–22 || 20–30 ||
|-
| Crankshaft pulley bolt || M24 × 1.5 || 159–174 || 216–235 ||
|-
| Flywheel / driveplate bolts || M10 × 1.25 || 61–69 || 83–93 ||
|-
| Timing belt tensioner || M8 × 1.25 || 12–15 || 16–21 ||
|-
| Thermostat housing || M6 × 1.0 || 5–8 || 7–11 ||
|-
| Intake manifold bolts || M8 × 1.25 || 13–15 || 18–20 ||
|-
| Exhaust manifold nuts || M10 × 1.25 || 27–35 || 37–47 ||
|-
| Turbo-to-manifold nuts (ET) || M10 × 1.25 || 27–35 || 37–47 ||
|-
| Turbo oil feed banjo bolt (ET) || M12 × 1.25 || 12–15 || 16–21 ||
|}

=== Lubrication ===

{| class="wikitable sortable"
|-
! Location !! Thread !! Torque (lb·ft) !! Torque (N·m)
|-
| Oil pump bolts || M6 × 1.0 || 5–6 || 7–8
|-
| Oil pressure sender || M16 × 1.5 || 11–18 || 15–25
|}

== Transmission ==

=== Manual (FS5W71C / RS5F50A) ===

{| class="wikitable sortable"
|-
! Location !! Thread !! Torque (lb·ft) !! Torque (N·m)
|-
| Trans-to-engine bolts || M12 × 1.25 || 29–36 || 39–49
|-
| Drain / fill plugs || M24 × 1.5 || 22–36 || 29–49
|-
| Rear mount-to-crossmember || M10 × 1.25 || 22–29 || 30–39
|-
| Shift lever retainer bolts || M8 × 1.25 || 9–12 || 12–16
|}

=== Automatic (RE4W03A) ===

{| class="wikitable sortable"
|-
! Location !! Thread !! Torque (lb·ft) !! Torque (N·m)
|-
| Trans-to-engine bolts || M12 × 1.25 || 29–36 || 39–49
|-
| Torque converter-to-flexplate || M10 × 1.25 || 33–40 || 44–54
|-
| Trans oil pan bolts || M6 × 1.0 || 3.6–5 || 5–7
|-
| Trans drain plug || M18 × 1.5 || 22–29 || 29–39
|}

== Driveline ==

{| class="wikitable sortable"
|-
! Location !! Thread !! Torque (lb·ft) !! Torque (N·m) !! Notes
|-
| Driveshaft-to-diff flange bolts || M10 × 1.25 || 29–36 || 39–49 ||
|-
| Driveshaft center bearing bracket || M8 × 1.25 || 9–14 || 12–19 ||
|-
| Differential mounting bolts || M12 × 1.25 || 40–47 || 54–64 ||
|-
| Axle/stub shaft nut (rear) || M24 × 1.5 || 152–203 || 206–275 || Stake after tightening
|-
| Half-shaft-to-diff bolts || M8 × 1.25 || 25–33 || 34–44 ||
|}

== Brakes ==

{| class="wikitable sortable"
|-
! Location !! Thread !! Torque (lb·ft) !! Torque (N·m) !! Notes
|-
| Brake caliper slide pins || M8 × 1.25 || 16–23 || 22–31 ||
|-
| Caliper bracket bolts (front) || M12 × 1.25 || 53–72 || 72–97 ||
|-
| Caliper bracket bolts (rear) || M10 × 1.25 || 28–38 || 38–52 ||
|-
| Brake rotor screws || M6 × 1.0 || 4–7 || 5–9 ||
|-
| Master cylinder to booster || M10 × 1.25 || 7–12 || 9–16 ||
|-
| Brake line fittings (metric) || M10 × 1.0 || 10–13 || 14–18 ||
|-
| Wheel lug nuts || M12 × 1.25 || 58–72 || 79–98 || Conical seat
|}

== Suspension & steering ==

=== Front ===

{| class="wikitable sortable"
|-
! Location !! Thread !! Torque (lb·ft) !! Torque (N·m) !! Notes
|-
| Strut-to-knuckle pinch bolt || M12 × 1.25 || 58–72 || 79–98 ||
|-
| Strut top mount nuts || M10 × 1.25 || 22–30 || 30–40 ||
|-
| Lower control arm pivot bolt || M14 × 1.5 || 69–83 || 94–113 || Tighten at ride height
|-
| Lower ball joint nut || M12 × 1.25 || 52–64 || 70–87 || Cotter pin
|-
| Sway bar end link nuts || M8 × 1.25 || 12–16 || 16–21 ||
|-
| Sway bar clamp bolts || M8 × 1.25 || 9–12 || 12–16 ||
|-
| Steering rack mount bolts || M10 × 1.25 || 29–36 || 39–49 ||
|-
| Tie rod end nut || M12 × 1.25 || 22–29 || 30–39 || Cotter pin
|-
| Tie rod jam nut || M14 × 1.5 || 58–72 || 79–98 ||
|}

=== Rear ===

{| class="wikitable sortable"
|-
! Location !! Thread !! Torque (lb·ft) !! Torque (N·m) !! Notes
|-
| Strut-to-knuckle bolt || M12 × 1.25 || 58–72 || 79–98 ||
|-
| Strut top mount nuts || M10 × 1.25 || 22–30 || 30–40 ||
|-
| Rear lower arm pivot bolts || M14 × 1.5 || 69–83 || 94–113 || Tighten at ride height
|-
| Rear upper arm pivot bolts || M12 × 1.25 || 47–58 || 64–78 ||
|-
| Rear toe arm bolts || M14 × 1.5 || 69–83 || 94–113 ||
|-
| Rear sway bar end links || M8 × 1.25 || 12–16 || 16–21 ||
|-
| Rear crossmember bolts || M12 × 1.25 || 40–47 || 54–64 ||
|}

== Body & misc. ==

{| class="wikitable sortable"
|-
! Location !! Thread !! Torque (lb·ft) !! Torque (N·m)
|-
| Hood hinge bolts || M8 × 1.25 || 9–14 || 12–19
|-
| Seat belt anchor bolts || M12 × 1.25 || 22–29 || 30–39
|-
| Battery terminal bolts (side post) || M5 × 0.8 || 3–4 || 4–5
|}

== Notes ==

* All values from the Z31 FSM (Factory Service Manual) unless otherwise noted.
* Torque specs assume clean, dry threads. Add ~10% for oiled threads, or consult the FSM.
* Suspension fasteners marked "tighten at ride height" must be torqued with the suspension at normal ride height (car on ground or on a lift with suspension loaded), not with wheels hanging.
* "Stake" means deform the nut flange into the shaft groove after torquing to prevent loosening.

== See also ==

* [[Z31/z31fsm_php|Z31 Factory Service Manuals]] — full FSM PDFs
* [[Z31/timingbelt|Timing belt replacement]]
* [[Z31/basics|Z31 basics]]

[[Category:Z31]]
[[Category:Reference]]
[[Category:Maintenance]]

Main Page

2026-05-17T03:38:17Z

10.10.10.10: /* Z31 quick reference */

{| style="width:100%; border:0;"
| style="vertical-align:top; padding:0 12px 0 0;" |
'''Welcome to the Z31 Library''' — a community-maintained reference for the Nissan 300ZX (Z31, 1984–1989).
|}

== Z31 quick reference ==

{| class="wikitable" style="width:100%"
! colspan="4" | Engine specs
|-
! 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
|-
| VG30ET (turbo) || 2,960 cc (3.0 L) || 200 hp @ 5,200 rpm || 227 lb·ft @ 3,600 rpm
|}

{| class="wikitable" style="width:100%"
! colspan="4" | Engine internal specs
|-
! Engine !! Bore × Stroke !! Compression !! Configuration
|-
| VG30E || 87 mm × 83 mm || 9.0:1 || V6 SOHC 12-valve
|-
| VG30ET || 87 mm × 83 mm || 7.8:1 || V6 SOHC 12-valve + IHI turbo
|
| VG30ET (W series)|| 87 mm × 83 mm || 8.3:1 || V6 SOHC 12-valve + T25 watercooled turbo
|}

=== Oil change ===

{| class="wikitable"
|-
! 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
|-
| VG30ET || Nissan 15208-43G00 (or equivalent) || 3.75 qt (3.6 L) || 10W-30 (factory) · 5W-30 acceptable
|}

* 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 ===

{| class="wikitable"
|-
! Trans !! Type !! Capacity
|-
| FS5W71C (5-speed MT) || GL-4 MTF (75W-90 or 80W-90) || 2.5 qt (2.4 L)
|-
| RS5F50A (5-speed MT, 1988–89 N/A) || GL-4 MTF (75W-90) || 2.4 qt (2.3 L)
|-
| RE4W03A (4-speed AT) || Dexron II/III ATF || 7.4 qt total (3.2 qt service fill)
|}

=== 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 ===

{| class="wikitable"
|-
! Engine !! OEM plug !! Gap
|-
| VG30E || NGK BKR5E-11 / Nissan 22401-01P15 || 1.1 mm (0.043 in)
|-
| VG30ET || NGK BKR6E-11 / Nissan 22401-01P16 || 1.1 mm (0.043 in)
|}

=== Timing belt ===

* Replacement interval: 60,000 mi (96,000 km)
* See [[Z31/timingbelt|Timing belt replacement]] for full procedure

=== Tire sizes (stock) ===

{| class="wikitable"
|-
! Year !! Front !! Rear
|-
| 1984–1985 || 205/60R15 || 225/50R15
|-
| 1986–1989 || 205/60R15 || 225/50R15
|-
| 1987–1989 2+2 || 205/60R15 || 225/50R15
|}

* Factory rim: 15 × 6.5 JJ (front), 15 × 7.0 JJ (rear)

== Z31 reference ==

* [[Z31]] — Z31 hub page
* [[Z31/reference|Z31 reference index]] — full XenonZcar Z31 reference
* [[Z31/basics|Z31 basics]] · [[Z31/issues|Common issues & fixes]] · [[Z31/mods|Modifications]]
* [[Z31/z31fsm_php|Factory Service Manuals (FSM)]] · [[Z31/z31ownersmanuals_php|Owner's manuals]]
* [[Z31/Nuts and Bolts|Nuts & bolts — thread pitch, torque specs]]
* [[:Category:Imported from Xenonzcar|Browse all imported XenonZcar pages]]

== Related Z-car content ==

* [[S30]] — 240Z / 260Z / 280Z (1970–1978)
* [[S130]] — 280ZX (1979–1983), predecessor
* [[Z32]] — 300ZX (1990–2000), successor

== Forums ==

* [[Forums/Z31P|z31performance.com archive]] — Sept 2024 import, ~2762 threads organized by category
* [[Forums|Forums landing]] — all forum archives

== Static site archives ==

Browse the original sites as they appeared (untouched HTML mirrors):

* [https://dev.z31library.com/Z31performance_archive/ z31performance.com forum]
* [https://dev.z31library.com/xenonzcar_archive/z31.html xenonzcar.com (Z31 section)]
* [https://dev.z31library.com/z31info_archive/ z31.info (home only — see [[Z31info|imported content]])]

== Getting started ==

* [[Special:RecentChanges|Recent changes]] · [[Special:AllPages|All pages]] · [[Special:Categories|Categories]]

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