Z31/nuts bolts php

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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 |