Editing Z31/Nuts and Bolts (section)

== Suspension & steering ==

=== Front ===

{| class="wikitable sortable"
|-
! Location !! Thread (size × pitch, length) !! Years !! Torque (N·m) !! Torque (ft-lb) !! Source / notes
|-
| Knuckle arm to strut (knuckle spindle) || M12 × 1.25, 40 mm bolt || All || 72–97 || 53–72 || Size [1] "Knuckle to strut"; torque FSM FA-25 "Knuckle arm to knuckle spindle" [9]
|-
| Strut mounting insulator (top mount) fixing bolt || — || 1987 || 31–42 || 23–31 || FSM FA-25 [9]
|-
| Transverse link (lower control arm) to suspension member || — || 1987 || 93–113 || 69–83 || FSM FA-25 [9]. FSM: do the final tightening at curb weight with the tires on the ground.
|-
| Lower ball joint to knuckle arm || — || 1987 || 96–120 || 71–88 || FSM FA-25 [9]
|-
| Stabilizer bar to transverse link || — || 1987 || 16–22 || 12–16 || FSM FA-25 [9]
|-
| Stabilizer bar to connecting rod || — || 1987 || 64–69 || 47–51 || FSM FA-25 [9]
|-
| Stabilizer bar clamp to body (tension rod bracket) || — || 1987 || 29–39 || 22–29 || FSM FA-25 [9]. FSM: do the final tightening at curb weight with the tires on the ground.
|-
| Tension rod bracket || M10 × 1.25, 25 mm bolt || All || — || — || Size [1]. FSM FA-25 has "Tension rod bracket to body" 29–39 N·m (22–29 ft-lb); not paired, because it's unclear whether this is the same bolt.
|-
| Tension rod studs (nut) || M10 × 1.5 || 84–87 || — || — || Size [1]
|-
| Tension rod studs (nut) || M12 × 1.5 || 88–89 || — || — || Size [1]
|-
| Tension rod to tension rod bracket || — || 1987 || 44–54 || 33–40 || FSM FA-25 [9]
|-
| Tension rod to transverse link || — || 1987 || 42–54 || 31–40 || FSM FA-25 [9]. The 1986 FA-24 table reads 42–59 N·m (31–43 ft-lb) [14].
|-
| Steering rack (gear & linkage) mounting || M12 × 1.25, 30 mm bolt || All || 39–49 || 29–36 || Size [1] "Steering rack to crossmember"; torque FSM ST-23 [11]
|-
| Tie rod end to knuckle arm || M14 × 1.5 castle nut || All || 54–98 || 40–72 || Size [1]; torque FSM ST-23 "Tie-rod to knuckle arm", FA-25 [11][9]
|-
| Tie rod lock (jam) nut || — || 1987 || 78–98 || 58–72 || FSM ST-23, FA-25, MA-43 [11][9][12]
|}

=== Rear ===

{| class="wikitable sortable"
|-
! Location !! Thread (size × pitch, length) !! Years !! Torque (N·m) !! Torque (ft-lb) !! Source / notes
|-
| Shock absorber lower end fixing bolt || M12 × 1.25 bolt; M12 × 1.25, 40 mm (80 mm), prevailing-torque nylock nut || All || 59–78 || 43–58 || Size [1] "Shock to lower mount"; torque FSM RA-24 [10]
|-
| Shock absorber upper end || M10 × 1.25 prevailing-torque nuts (upper mount to body) || All || 31–42 || 23–31 || Size [1] "Shock upper mount to body"; torque FSM RA-24 "Upper end fixing bolt" [10]. Pairing by name; check that these are the same fasteners.
|-
| Stabilizer bar to suspension arm || — || 1987 || 16–21 || 12–15 || FSM RA-24 [10]
|-
| Stabilizer bar clamp to suspension member || — || 1987 || 31–42 || 23–31 || FSM RA-24 [10]
|-
| Suspension member to suspension arm (rear arm pivot) || — || 1986–87 || 98–118 || 72–87 || FSM 1986 RA-24 [14]. The 1987 RA-24 table has the same values, but its label is garbled in the text copy [10]. FSM: do the final tightening at curb weight with the tires on the ground (RA-18).
|-
| Suspension member to suspension member stay || — || 1987 || 78–108 || 58–80 || FSM RA-24 [10]
|-
| Suspension member stay to body || — || 1987 || 20–25 || 14–19 || FSM RA-24 [10]
|}

FSM RA (1987, RA-18): tighten the suspension arm pin nuts to the specified torque after the wheels are installed and the car is on the ground at curb weight.