Editing Z31/nuts bolts php

{{ImportedFrom|site=Xenonzcar|title=Z31 Nut and Bolt List|url=https://dev.z31library.com/xenonzcar_archive/z31/nuts_bolts.php.html|archive=https://dev.z31library.com/xenonzcar_archive/z31/nuts_bolts.php.html|fetched=2026-05-15}}

== Z31 Nut and Bolt List ==

==== Nut and Bolt Table ====

| Location | Size | Pitch | Thread Length (Shoulder Length) |
More Details | Years |
|---|---|---|---|---|---|
| Engine | |||||
| Upper rear timing cover | M6 | 1.0 | 10mm (none) | Bolt + split washer | All |
| Distributor bracket | M6 | 1.0 | 20mm (none) | Bolt | All |
| Distributor cap | M4 | 0.75 | 25mm (none) | Bolt | All |
| Harmonic balancer to crank | M10 | 1.0 | 120mm | Bolt + flat washer | 84-87 |
| Harmonic balancer to crank | M12 | 1.25 | ? | Bolt + flat washer | 88-89 |
| Pulleys to harmonic balancer | M6 | 1.0 | 15mm | Bolt + split washer | All |
| Timing belt tensioner | M10 | 1.25 | Nut + flat washer | All | |
| CHTS | M12 | 1.25 | All | ||
| Engine (Accessories) | |||||
| Alternator bracket to block | M10 | 1.5 | 60mm | Bolt + split washer | 87-89 |
| Alternator adjuster to block | M8 | 1.25 | 25mm (40mm) | Bolt + split + flat washer | All |
| Alternator to bracket | M8 | 1.25 | 20mm | Bolt | All |
| A/C bracket to block | M10 | 1.5 | 25mm (20mm) | Bolt | All |
| A/C bracket to block | M8 | 1.25 | 25mm (90mm) | Bolt | All |
| Upper P/S pump bracket | M8 | 1.25 | 35mm | Bolt + split washer | All |
| Lower P/S pump bracket | M10 | 1.5 | 20mm | Bolt + flat washer | 84-86 |
| Front-right hoist bracket | M8 | 1.25 | 50mm | Bolt + split washer | All |
| Front-right hoist bracket | M8 | 1.25 | 16mm | Bolt + split washer | All |
| Motor mount bracket to block | M10 | 1.5 | 20mm | Bolt + split washer | All |
| Motor mount stabilizer to bracket | M10 | 1.5 | 25mm | Bolt + split washer | All |
| Motor mount stabilizer to block | M10 | 1.5 | 20mm | Bolt + split washer | All |
| Engine (Cooling) | |||||
| Filler neck | M8 | 1.25 | 50mm (?) | Bolt + split + flat washer | All |
| T-stat housing | M8 | 1.25 | 72mm (?) | Bolt + split + flat washer | All |
| T-stat housing cover | M8 | 1.25 | 34mm | Bolt + split + flat washer | All |
| Water pump pulley | M6 | 1.0 | Stud + split washer + nut | All | |
| Filler neck to heater tube flange | M6 | 1.0 | 18mm (none) | Bolt + split washer | All |
| Heater tube front+rear flange | M6 | 1.0 | 18mm (none) | Bolt + split washer | All |
| Heater tube hold-down | M6 | 1.0 | 14mm (none) | Bolt + split washer | All |
| Engine (Lubrication) | |||||
| Oil pump | M6 | 1.0 | 20mm | Bolt + split washer | All |
| M6 | 1.0 | 30mm | Bolt + split washer | All | |
| Oil pan | M6 | 1.0 | 14mm (none) | Bolt + split washer | All |
| Oil temp sensor bung | M16 | 1.5 | All (turbo) | ||
| Oil sender port | 1/8" | BSPT | All | ||
| Engine (Induction) | |||||
| Fuel pressure regulator | M6 | 1.0 | 12mm | Bolt + split washer | All |
| Pop-off valve port | 1" | NPT | All | ||
| EGR valve to intake | M8 | 1.25 | Stud + split washer + nut | All | |
| Throttle body to plenum | M8 | 1.25 | 40mm (10mm) | Bolt + split washer | All |
| Upper plenum to lower | M8 | 1.25 | 40mm (10mm) | Bolt + split washer | All |
| Injector retainer | M6 | 1.0 | 30mm (none) | Bolt | All |
| Engine (Exhaust) | |||||
| Exhaust manifold | M8 | 1.25 | Stud | 84-87 | |
| Exhaust manifold | M10 | 1.25 | 30mm | Bolt | 88-89 |
| Turbine to downpipe | M10 | 1.5 | Stud | All | |
| Downpipe to exhaust | M10 | 1.25 | Stud | All | |
| EGR manifold bung | M22 | 1.5 | All | ||
| Transmission / Driveshaft | |||||
| Transmission mount to body | M10 | 1.5 | 20mm | Bolt | All |
| Transmission mount to isolator | M10 | 1.25 | 20mm (90mm) | Bolt | All |
| Driveshaft to differential | M10 | 1.25 | 30mm | Bolt | All (turbo) |
| Front Suspension | |||||
| Tie rod end | M14 | 1.5 | Castle nut | All | |
| Steering rack to crossmember | M12 | 1.25 | 30mm | Bolt | All |
| Knuckle to strut | M12 | 1.25 | 40mm | Bolt | All |
| Caliper to strut | M12 | 1.25 | 40mm | Bolt | All |
| Tension rod bracket | M10 | 1.25 | 25mm | Bolt | All |
| Tension rod studs | M10 | 1.5 | Nut | 84-87 | |
| Tension rod studs | M12 | 1.5 | Nut | 88-89 | |
| Rear Suspension | |||||
| Shock to lower mount | M12 | 1.25 | ? | Bolt | All |
| M12 | 1.25 | 40mm (80mm) | Prev-torq nylock nuts | All | |
| Shock upper mount to body | M10 | 1.25 | Prev-torq nuts | All | |
| Differential cover | M8 | 1.25 | 25mm | Bolt | All |
| Differential mount to body | M10 | 1.5 | 60mm | Bolt | All |
| M12 | 1.25 | Nut | All | ||
| Differential mount to body | M10 | 1.5 | 60mm | Bolt | All |
| Differential to bracket | M14 | 1.5/2.0 | Stud | All | |
| M14 | 1.5 | Nut | All | ||
| Differential to crossmember | M12 | 1.25 | 25mm (150mm) | Bolt | All |
| Body | |||||
| Front bumper cover | M6 | 1.0 | Prev-torq nuts | All | |
| Rear bumper cover | M5 | 1.0 | Prev-torq nuts | All | |
| Interior | |||||
| Seat bracket | M10 | 1.5 | 25mm | Bolt | All |
| Miscellaneous | |||||
| Acorn nut | M12 | 1.25 | 60° taper | 84-86 | |
| Lug nut | M12 | 1.25 | 60° taper | 87-89 |

[[Category:Imported from Xenonzcar]]