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{{ImportedFrom|site=Xenonzcar|title=Z31 Transmission Specifications and Variations|url=http://www.xenonzcar.com/z31/transmissions.php.html|archive=https://dev.z31library.com/xenonzcar_archive/z31/transmissions.php.html|fetched=2026-05-15}}
{{ImportedFrom|site=Xenonzcar|title=Z31 Transmission Specifications and Variations|url=https://z31library.com/xenonzcar_archive/z31/transmissions.php.html|archive=https://z31library.com/xenonzcar_archive/z31/transmissions.php.html|fetched=2026-05-15}}


== Z31 Transmission Specifications and Variations ==
== Z31 Transmission Specifications and Variations ==
Line 14: Line 14:
=== Manual Transmission Gear Ratios ===
=== Manual Transmission Gear Ratios ===


| 1984-1989 Non Turbo FS5W71C |
{| class="wikitable"
1984-1986 Turbo FS5R90A |
!
1987 Turbo FS5R30A |
! 1984-1989 Non Turbo<br />FS5W71C
1988-1989 Turbo FS5R30A |
! 1984-1986 Turbo<br />FS5R90A
|
! 1987 Turbo<br />FS5R30A
|---|---|---|---|---|
! 1988-1989 Turbo<br />FS5R30A
1st Gear |
|-
3.321 | 3.350 | 3.324 | 3.324 |
| 1st Gear
2nd Gear |
| 3.321
1.902 | 2.056 | 2.077 | 2.077 |
| 3.350
3rd Gear |
| 3.324
1.308 | 1.376 | 1.360 | 1.360 |
| 3.324
4th Gear |
|-
1.000 | 1.000 | 1.000 | 1.000 |
| 2nd Gear
5th Gear |
| 1.902
0.759 | 0.752 | 0.751 | 0.711 |
| 2.056
Reverse |
| 2.077
3.636 | 3.153 | 3.382 | 3.382 |
| 2.077
|-
| 3rd Gear
| 1.308
| 1.376
| 1.360
| 1.360
|-
| 4th Gear
| 1.000
| 1.000
| 1.000
| 1.000
|-
| 5th Gear
| 0.759
| 0.752
| 0.751
| 0.711
|-
| Reverse
| 3.636
| 3.153
| 3.382
| 3.382
|}


=== Manual Transmission Fluids and Levels ===
=== Manual Transmission Fluids and Levels ===


| Transmission Model | Model Z31 | Fluid Capacity | Fluid Type |
{| class="wikitable"
|---|---|---|---|
! Transmission Model
| FS5W71C | 1984 - 1989 Non Turbo | 4-1/4 pt | API GL-4 |
! Model Z31
| FS5R90A | 1984 - 1986 Turbo | 4 pt |
! Fluid Capacity
API GL-4 (SAE 80W-90) or type DEXRON |
! Fluid Type
| FS5R30A | 1987 - 1989 Turbo | 5-1/8 pt | API GL-4 |
|-
| FS5W71C
| 1984 - 1989 Non Turbo
| 4-1/4 pt
| API GL-4
|-
| FS5R90A
| 1984 - 1986 Turbo
| 4 pt
| API GL-4<br />(SAE 80W-90)<br />or type DEXRON
|-
| FS5R30A
| 1987 - 1989 Turbo
| 5-1/8 pt
| API GL-4
|}


=== Manual Transmission Weight ===
=== Manual Transmission Weight ===


| 1986-1989 Non Turbo FS5W71C |
{| class="wikitable"
1984-1986 Turbo T-5 FS5R90A |
! 1986-1989 Non Turbo<br />FS5W71C
1987-1989 Turbo FS5R30A |
! 1984-1986 Turbo T-5<br />FS5R90A
|---|---|---|
! 1987-1989 Turbo<br />FS5R30A
| 94 lbs (No fluid, clutch fork, throwout bearing, or shifter) | 102.2 lbs (with throwout bearing & all switches; shifter removed) | Unknown |
|-
| 94 lbs (No fluid, clutch fork, throwout bearing, or shifter)
| 102.2 lbs (with throwout bearing & all switches; shifter removed)
| Unknown
|}


=== Automatic Specifications ===
=== Automatic Specifications ===
Line 62: Line 106:
=== Automatic Gear Ratios ===
=== Automatic Gear Ratios ===


| 4N71B | E4N71B | |
{| class="wikitable"
|---|---|---|
!
1st Gear |
! 4N71B
2.458 | 2.458 |
! E4N71B
2nd Gear |
|-
1.458 | 1.458 |
| 1st Gear
3rd Gear |
| 2.458
1.000 | 1.000 |
| 2.458
4th Gear |
|-
0.686 | 0.686 |
| 2nd Gear
Reverse |
| 1.458
2.182 | 2.400 |
| 1.458
|-
| 3rd Gear
| 1.000
| 1.000
|-
| 4th Gear
| 0.686
| 0.686
|-
| Reverse
| 2.182
| 2.400
|}


=== Automatic Transmission Fluids and Levels ===
=== Automatic Transmission Fluids and Levels ===


| E4N71B | 4N71B | |
{| class="wikitable"
|---|---|---|
!
| Fluid Type | Auto Trans DEXRON | Auto Trans DEXRON |
! E4N71B
| Capacity | 7-3/8 qt | 7-3/8 qt |
! 4N71B
|-
| Fluid Type
| Auto Trans DEXRON
| Auto Trans DEXRON
|-
| Capacity
| 7-3/8 qt
| 7-3/8 qt
|}


=== Specifications And Adjustments ===
=== Specifications And Adjustments ===


| Transmission Model Code | X8075 | X8006 |
{| class="wikitable"
|---|---|---|
! Transmission Model Code
| Stamp Mark on Torque Converter | GK | GC |
! X8075
| Direct Clutch Specs | ||
! X8006
| Number Of Drive Plates | 2 | 3 |
|-
| Number Of Driven Plates | 2 | 3 |
| Stamp Mark on Torque Converter
| Clearance mm (in) | ||
| GK
| Standard | 1.6 - 1.8 (0.063 - 0.071) | |
| GC
| Allowable Limit | 2.0 (0.079) | 2.2 (0.087) |
|-
| Drive Plate Thickness mm (in) | ||
! colspan="3" style="text-align:left" | Direct Clutch Specs
| Standard | 1.50 - 1.65 (0.0591 - 0.0650) | |
|-
| Allowable Limit | 1.4 (0.055) |
| Number Of Drive Plates
| 2
| 3
|-
| Number Of Driven Plates
| 2
| 3
|-
! colspan="3" style="text-align:left" | Clearance mm (in)
|-
| Standard
| colspan="2" | 1.6 - 1.8 (0.063 - 0.071)
|-
| Allowable Limit
| 2.0 (0.079)
| 2.2 (0.087)
|-
! colspan="3" style="text-align:left" | Drive Plate Thickness mm (in)
|-
| Standard
| colspan="2" | 1.50 - 1.65 (0.0591 - 0.0650)
|-
| Allowable Limit
| colspan="2" | 1.4 (0.055)
|}


| Thickness of Retaining Plates |
{| class="wikitable"
X8075 | X8006 | ||
! rowspan="11" | Thickness of<br />Retaining Plates
|---|---|---|---|---|
! colspan="2" | X8075
| Thickness mm (in) | Part Number | Thickness mm (in) | Part Number | |
! colspan="2" | X8006
| 5.6 (0.220) | 31567-X2903 | 5.8 (0.220) | 31567-X2904 | |
|-
| 5.8 (0.220) | 31567-X2904 | 6.0 (0.220) | 31567-X2905 | |
! Thickness mm (in)
| 6.0 (0.220) | 31567-X2905 | 6.2 (0.220) | 31567-X2906 | |
! Part Number
| 6.2 (0.220) | 31567-X2906 | 6.4 (0.220) | 31507-X8600 | |
! Thickness mm (in)
| 6.4 (0.220) | 31507-X8600 | 6.6 (0.220) | 31507-X8601 | |
! Part Number
| 6.6 (0.220) | 31507-X8601 | 6.8 (0.220) | 31537-X2800 | |
|-
| 6.8 (0.220) | 31537-X2800 | 7.0 (0.220) | 31537-X2801 | |
| 5.6 (0.220)
| 7.0 (0.220) | 31537-X2801 | 7.2 (0.283) | 31537-X0900 | |
| 31567-X2903
| 7.4 (0.291) | 31537-X0901 |
| 5.8 (0.220)
| 31567-X2904
|-
| 5.8 (0.220)
| 31567-X2904
| 6.0 (0.220)
| 31567-X2905
|-
| 6.0 (0.220)
| 31567-X2905
| 6.2 (0.220)
| 31567-X2906
|-
| 6.2 (0.220)
| 31567-X2906
| 6.4 (0.220)
| 31507-X8600
|-
| 6.4 (0.220)
| 31507-X8600
| 6.6 (0.220)
| 31507-X8601
|-
| 6.6 (0.220)
| 31507-X8601
| 6.8 (0.220)
| 31537-X2800
|-
| 6.8 (0.220)
| 31537-X2800
| 7.0 (0.220)
| 31537-X2801
|-
| 7.0 (0.220)
| 31537-X2801
| 7.2 (0.283)
| 31537-X0900
|-
|
|
| 7.4 (0.291)
| 31537-X0901
|}


| High Reverse Clutch (Front) | ||
{| class="wikitable"
|---|---|---|
! colspan="3" | High Reverse Clutch (Front)
| Number Of Drive Plates | 3 | 4 |
|-
| Number Of Driven Plates | 5 | 5 |
| Number Of Drive Plates
| Clearance mm (in) | ||
| 3
| Standard | 1.6 - 1.8 (0.063 - 0.071) | |
| 4
| Allowable Limit | 2.2 (0.087) | 2.4 (0.094) |
|-
| Drive Plate Thickness mm (in) | ||
| Number Of Driven Plates
| Standard | 1.50 - 1.65 (0.0591 - 0.0650) | |
| 5
| Allowable Limit | 1.4 (0.055) |
| 5
|-
! colspan="3" style="text-align:left" | Clearance mm (in)
|-
| Standard
| colspan="2" | 1.6 - 1.8 (0.063 - 0.071)
|-
| Allowable Limit
| 2.2 (0.087)
| 2.4 (0.094)
|-
! colspan="3" style="text-align:left" | Drive Plate Thickness mm (in)
|-
| Standard
| colspan="2" | 1.50 - 1.65 (0.0591 - 0.0650)
|-
| Allowable Limit
| colspan="2" | 1.4 (0.055)
|}


| Thickness of Retaining Plates | X8075 | X8006 | ||
{| class="wikitable"
|---|---|---|---|---|
! rowspan="9" | Thickness of Retaining Plates
| Thickness mm (in) | Part Number | Thickness mm (in) | Part Number | |
! colspan="2" | X8075
| 5.0 (0.197) | 31567-X2900 | 5.0 (0.197) | 31567-X2900 | |
! colspan="2" | X8006
| 5.2 (0.205) | 31567-X2901 | 5.2 (0.205) | 31567-X2901 | |
|-
| 5.4 (0.213) | 31567-X2902 | 5.4 (0.213) | 31567-X2902 | |
! Thickness mm (in)
| 5.6 (0.220) | 31567-X2903 | 5.6 (0.220) | 31567-X2903 | |
! Part Number
| 5.8 (0.228) | 31567-X2904 | 5.8 (0.228) | 31567-X2904 | |
! Thickness mm (in)
| 6.0 (0.236) | 31567-X2905 | 6.0 (0.236) | 31567-X2905 | |
! Part Number
| 6.2 (0.244) | 31567-X2906 |
|-
| 5.0 (0.197)
| 31567-X2900
| 5.0 (0.197)
| 31567-X2900
|-
| 5.2 (0.205)
| 31567-X2901
| 5.2 (0.205)
| 31567-X2901
|-
| 5.4 (0.213)
| 31567-X2902
| 5.4 (0.213)
| 31567-X2902
|-
| 5.6 (0.220)
| 31567-X2903
| 5.6 (0.220)
| 31567-X2903
|-
| 5.8 (0.228)
| 31567-X2904
| 5.8 (0.228)
| 31567-X2904
|-
| 6.0 (0.236)
| 31567-X2905
| 6.0 (0.236)
| 31567-X2905
|-
|
|
| 6.2 (0.244)
| 31567-X2906
|}


| Forward Clutch (Rear) | X8075 | X8006 |
{| class="wikitable"
|---|---|---|
! Forward Clutch (Rear)
| Number of Drive Plates | 6 | 6 |
! X8075
| Number of Driven Plates | 6 | 6 |
! X8006
| Clearance mm (in) | ||
|-
| Standard | 0.8 - 1.5 (0.031 - 0.059) | |
| Number of Drive Plates
| Allowable Limit | 2.0 (0.079) | |
| 6
| Drive Plate Thickness mm (in) | ||
| 6
| Standard | 1.50 - 1.65 (0.0591 - 0.0650) | |
|-
| Allowable Thickness | 1.4 (0.055) | |
| Number of Driven Plates
| Thickness Of Retaining Plate | Thickness mm (in) | Part Number |
| 6
| 4.8 (0.189) | 31567-X0300 |
| 6
|-
! colspan="3" style="text-align:left" | Clearance mm (in)
|-
| Standard
| colspan="2" | 0.8 - 1.5 (0.031 - 0.059)
|-
| Allowable Limit
| colspan="2" | 2.0 (0.079)
|-
! colspan="3" style="text-align:left" | Drive Plate Thickness mm (in)
|-
| Standard
| colspan="2" | 1.50 - 1.65 (0.0591 - 0.0650)
|-
| Allowable Thickness
| colspan="2" | 1.4 (0.055)
|-
| rowspan="2" | Thickness Of Retaining Plate
| Thickness mm (in)
| Part Number
|-
| 4.8 (0.189)
| 31567-X0300
|}


| Low & Reverse Brake | X8075 | X8006 |
{| class="wikitable"
|---|---|---|
! Low & Reverse Brake
| Number Of Drive Plates | 6 | 7 |
! X8075
| Number Of Driven Plates | 6 | 7 |
! X8006
| Clearance mm (in) | ||
|-
| Standard | 0.80 - 1.05 (0.0315 - 0.0413) | |
| Number Of Drive Plates
| Allowable Limit | 2.0 (0.079) | 2.2 (0.087) |
| 6
| Drive Plate Thickness mm (in) | ||
| 7
| Standard | 1.90 - 2.05 (0.0748 - 0.0807) | |
|-
| Allowable Limit | 1.8 (0.071) |
| Number Of Driven Plates
| 6
| 7
|-
! colspan="3" style="text-align:left" | Clearance mm (in)
|-
| Standard
| colspan="2" | 0.80 - 1.05 (0.0315 - 0.0413)
|-
| Allowable Limit
| 2.0 (0.079)
| 2.2 (0.087)
|-
! colspan="3" style="text-align:left" | Drive Plate Thickness mm (in)
|-
| Standard
| colspan="2" | 1.90 - 2.05 (0.0748 - 0.0807)
|-
| Allowable Limit
| colspan="2" | 1.8 (0.071)
|}


| Thickness Of Retaining Plate |
{| class="wikitable"
X8075 | X8006 | ||
! rowspan="2" | Thickness Of<br />Retaining Plate
|---|---|---|---|---|
! colspan="2" | X8075
| Thickness mm (in) | Part Number | Thickness mm (in) | Part Number | |
! colspan="2" | X8006
| 11.8 (0.465) | 31667-X0300 | 7.8 (0.307) | 31667-X0500 | |
|-
| 12.0 (0.472) | 31667-X0301 | 8.0 (0.315) | 31667-X0501 | |
! Thickness mm (in)
| 12.2 (0.480) | 31667-X0302 | 8.2 (0.323) | 31667-X0502 | |
! Part Number
| 12.4 (0.488) | 31667-X0303 | 8.4 (0.331) | 31667-X0503 | |
! Thickness mm (in)
| 12.6 (0.496) | 31667-X0304 | 8.6 (0.339) | 31667-X0504 | |
! Part Number
| 12.8 (0.504) | 31667-X0305 | 8.8 (0.346) | 31667-X0505 |
|-
| 11.8 (0.465)
| 31667-X0300
| 7.8 (0.307)
| 31667-X0500
|-
| 12.0 (0.472)
| 31667-X0301
| 8.0 (0.315)
| 31667-X0501
|-
| 12.2 (0.480)
| 31667-X0302
| 8.2 (0.323)
| 31667-X0502
|-
| 12.4 (0.488)
| 31667-X0303
| 8.4 (0.331)
| 31667-X0503
|-
| 12.6 (0.496)
| 31667-X0304
| 8.6 (0.339)
| 31667-X0504
|-
| 12.8 (0.504)
| 31667-X0305
| 8.8 (0.346)
| 31667-X0505
|}


| 2nd Brake Band Piston Size mm (in) | X8075 | X8006 |
{| class="wikitable"
|---|---|---|
! 2nd Brake Band Piston Size mm (in)
| Big Diameter | 64 (2.52) | 80 (3.15) |
! X8075
| Small Diameter | 40 (1.57) | 50 (1.97) |
! X8006
| O.D. Brake band Piston Size mm (in) | ||
|-
| Big Diameter | 60 (2.36) | 64 (2.52) |
| Big Diameter
| Small Diameter | 36 (1.42) | 36 (1.46) |
| 64 (2.52)
| Front End Play mm (in) | ||
| 80 (3.15)
| 0.5 - 0.8 (0.020 - 0.031) | ||
|-
| Thickness of High-reverse Clutch (front) thrust Washer | Thickness mm (in) | Part number |
| Small Diameter
| 1.3 (0.051) | 31528-X0107 | |
| 40 (1.57)
| 1.5 (0.059) | 31528-X0106 | |
| 50 (1.97)
| 1.7 (0.067) | 31528-X0105 | |
|-
| 1.9 (0.075) | 31528-X0100 | |
! colspan="3" style="text-align:left" | O.D. Brake band Piston Size mm (in)
| 2.1 (0.083) | 31528-X0101 | |
|-
| 2.3 (0.091) | 31528-X0102 | |
| Big Diameter
| 2.5 (0.098) | 31528-X0103 | |
| 60 (2.36)
| 2.7 (0.106) | 31528-X0104 | |
| 64 (2.52)
| Total End Play mm (in) | ||
|-
| 0.25 - 0.50 (0.0098 - 0.0197) | ||
| Small Diameter
| Thickness of oil pump Cover Bearing Race | Thickness mm (in) | Part number |
| 36 (1.42)
| 1.2 (0.047) | 31556-X0100 | |
| 36 (1.46)
| 1.4 (0.055) | 31556-X0101 | |
|-
| 1.6 (0.063) | 31556-X0102 | |
! colspan="3" style="text-align:left" | Front End Play mm (in)
| 1.8 (0.071) | 31556-X0103 | |
|-
| 2.0 (0.079) | 31556-X0104 | |
! colspan="3" style="text-align:left" | 0.5 - 0.8 (0.020 - 0.031)
| 2.2 (0.087) | 31556-X0105 | |
|-
| O.D. Pack End Play mm (in) | ||
! rowspan="9" | Thickness of High-reverse Clutch (front) thrust Washer
| 0.5 - 0.8 (0.020 - 0.031) | ||
! Thickness mm (in)
| Thickness Of O.D. Thrust Washer | Thickness mm (in) | Part number |
! Part number
| 1.5 (0.059) | 31528-X0106 | |
|-
| 1.7 (0.067) | 31528-X0105 | |
| 1.3 (0.051)
| 1.9 (0.075) | 31528-X0100 | |
| 31528-X0107
| 2.1 (0.083) | 31528-X0101 | |
|-
| 2.3 (0.091) | 31528-X0102 | |
| 1.5 (0.059)
| 2.5 (0.098) | 31528-X0103 | |
| 31528-X0106
| 2.7 (0.106) | 31528-X0104 | |
|-
| O.D Total End Play | ||
| 1.7 (0.067)
| 0.25 - 0.50 (0.0098 - 0.0197) | ||
| 31528-X0105
| Thickness Of O.D. Bearing Race | Thickness mm (in) | Part number |
|-
| 1.2 (0.047) | 31556-X0100 | |
| 1.9 (0.075)
| 1.4 (0.055) | 31556-X0101 | |
| 31528-X0100
| 1.6 (0.063) | 31556-X0102 | |
|-
| 1.8 (0.071) | 31556-X0103 | |
| 2.1 (0.083)
| 2.0 (0.079) | 31556-X0104 | |
| 31528-X0101
| 2.2 (0.087) | 31556-X0105 |
|-
| 2.3 (0.091)
| 31528-X0102
|-
| 2.5 (0.098)
| 31528-X0103
|-
| 2.7 (0.106)
| 31528-X0104
|-
! colspan="3" style="text-align:left" | Total End Play mm (in)
|-
! colspan="3" style="text-align:left" | 0.25 - 0.50 (0.0098 - 0.0197)
|-
! rowspan="7" | Thickness of oil pump Cover Bearing Race
! Thickness mm (in)
! Part number
|-
| 1.2 (0.047)
| 31556-X0100
|-
| 1.4 (0.055)
| 31556-X0101
|-
| 1.6 (0.063)
| 31556-X0102
|-
| 1.8 (0.071)
| 31556-X0103
|-
| 2.0 (0.079)
| 31556-X0104
|-
| 2.2 (0.087)
| 31556-X0105
|-
! colspan="3" style="text-align:left" | O.D. Pack End Play mm (in)
|-
! colspan="3" style="text-align:left" | 0.5 - 0.8 (0.020 - 0.031)
|-
! rowspan="8" | Thickness Of O.D. Thrust Washer
! Thickness mm (in)
! Part number
|-
| 1.5 (0.059)
| 31528-X0106
|-
| 1.7 (0.067)
| 31528-X0105
|-
| 1.9 (0.075)
| 31528-X0100
|-
| 2.1 (0.083)
| 31528-X0101
|-
| 2.3 (0.091)
| 31528-X0102
|-
| 2.5 (0.098)
| 31528-X0103
|-
| 2.7 (0.106)
| 31528-X0104
|-
! colspan="3" style="text-align:left" | O.D Total End Play
|-
! colspan="3" style="text-align:left" | 0.25 - 0.50 (0.0098 - 0.0197)
|-
! rowspan="7" | Thickness Of O.D. Bearing Race
! Thickness mm (in)
! Part number
|-
| 1.2 (0.047)
| 31556-X0100
|-
| 1.4 (0.055)
| 31556-X0101
|-
| 1.6 (0.063)
| 31556-X0102
|-
| 1.8 (0.071)
| 31556-X0103
|-
| 2.0 (0.079)
| 31556-X0104
|-
| 2.2 (0.087)
| 31556-X0105
|}


| Oil Pump Clearance mm (in) | |
{| class="wikitable"
|---|---|
! colspan="2" | Oil Pump Clearance mm (in)
| Outer Gear-pump Housing | |
|-
| Standard | 0.05 - 0.20 (0.0020 - 0.0079) |
! colspan="2" style="text-align:left" | Outer Gear-pump Housing
| Allowable Limit | 0.25 (0.0098) |
|-
| Outer Gear Crescent | |
| Standard
| Standard | 0.14 - 0.21 (0.0055 - 0.0083) |
| 0.05 - 0.20 (0.0020 - 0.0079)
| Allowable Limit | 0.25 (0.0098) |
|-
| Gear-pump Cover | |
| Allowable Limit
| Standard | 0.02 - 0.04 (0.0008 - 0.0016) |
| 0.25 (0.0098)
| Allowable Limit | 0.08 (0.0031) |
|-
! colspan="2" style="text-align:left" | Outer Gear Crescent
|-
| Standard
| 0.14 - 0.21 (0.0055 - 0.0083)
|-
| Allowable Limit
| 0.25 (0.0098)
|-
! colspan="2" style="text-align:left" | Gear-pump Cover
|-
| Standard
| 0.02 - 0.04 (0.0008 - 0.0016)
|-
| Allowable Limit
| 0.08 (0.0031)
|}


| Drum Support | |
{| class="wikitable"
|---|---|
! colspan="2" | Drum Support
| Seal Ring-ring Groove | |
|-
| Standard | 0.05 - 0.20 (0.0020 - 0.0079) |
! colspan="2" style="text-align:left" | Seal Ring-ring Groove
| Allowable Limit | 0.20 (0.0079) |
|-
| Standard
| 0.05 - 0.20 (0.0020 - 0.0079)
|-
| Allowable Limit
| 0.20 (0.0079)
|}


| Oil Distributor | |
{| class="wikitable"
|---|---|
! colspan="2" | Oil Distributor
| Seal Ring-ring Groove | |
|-
| Standard | 0.04 - 0.16 (0.0016 - 0.0063) |
! colspan="2" style="text-align:left" | Seal Ring-ring Groove
| Allowable Limit | 0.16 (0.0063) |
|-
| Standard
| 0.04 - 0.16 (0.0016 - 0.0063)
|-
| Allowable Limit
| 0.16 (0.0063)
|}


| Planetary Carrier | |
{| class="wikitable"
|---|---|
! colspan="2" | Planetary Carrier
| Clearance Between Pinion Washer and Planetary Carrier | |
|-
| Standard | 0.20 - 0.70 (0.0079 - 0.0276) |
! colspan="2" style="text-align:left" | Clearance Between Pinion Washer and Planetary Carrier
| Allowable Limit | 0.80 (0.0315) |
|-
| Standard
| 0.20 - 0.70 (0.0079 - 0.0276)
|-
| Allowable Limit
| 0.80 (0.0315)
|}


| Run-out of oil pump cover to housing mm (in) | Less Than 0.07 (0.0028) |
{| class="wikitable"
| Run-out of Drum support to O.D. case mm (in) | Less Than 0.05 (0.0020) |
| Run-out of oil pump cover to housing mm (in)
| Less Than 0.07 (0.0028)
|-
| Run-out of Drum support to O.D. case mm (in)
| Less Than 0.05 (0.0020)
|}


| Stall Revolution Specs | |
{| class="wikitable"
|---|---|
! colspan="2" | Stall Revolution Specs
| VG30E non-turbo | 2,150 - 2,450 RPM |
|-
| VG30ET Turbo | 2,500 - 2,800 RPM |
| VG30E non-turbo
| 2,150 - 2,450 RPM
|-
| VG30ET Turbo
| 2,500 - 2,800 RPM
|}


=== Interchange ===
=== Interchange ===
Line 269: Line 662:
If you're swapping one automatic for another, make sure you're matching the same transmission type—Non-Turbo for Non-Turbo, Electronic for Electronic, etc. If the torque converter doesn't line up properly with the flexplate (either too tight or too far away), you likely have mismatched parts. Turbo and Non-Turbo automatics use different torque converters and flexplates. Always match the converter and flexplate to your transmission to avoid pump drive damage!
If you're swapping one automatic for another, make sure you're matching the same transmission type—Non-Turbo for Non-Turbo, Electronic for Electronic, etc. If the torque converter doesn't line up properly with the flexplate (either too tight or too far away), you likely have mismatched parts. Turbo and Non-Turbo automatics use different torque converters and flexplates. Always match the converter and flexplate to your transmission to avoid pump drive damage!


[http://www.xenonzcar.com/2025siteimages/automatic-flex1.jpg image: Flexplate 1]
https://z31library.com/xenonzcar_archive/2025siteimages/automatic-flex1.jpg


[http://www.xenonzcar.com/2025siteimages/automatic-flex2.jpg image: Flexplate 2]
https://z31library.com/xenonzcar_archive/2025siteimages/automatic-flex2.jpg


=== Sources Used ===
=== Sources Used ===


[http://www.xenonzcar.com/z31/z31fsm.php 1984-1988 Nissan 300ZX Factory Service Manual][http://www.az-zbum.com/information.transmission.shtml AZ-Zbum][http://www.z31performance.com/forum/viewtopic.php?f=3&t=2536 Z31performance.com]- FS5W71C Transmission Weight posted by: Cuda of
* [[Z31/z31fsm php|1984-1988 Nissan 300ZX Factory Service Manual]]
[http://www.z31.com Z31.com] - T-5 FS5R90A Transmission Weight posted by: Matico40 of
* [http://www.az-zbum.com/information.transmission.shtml AZ-Zbum]
[http://www.z31.com Z31.com] - FS5R30A Transmission weight posted by: Grendel9 of
* [http://www.z31performance.com/forum/viewtopic.php?f=3&t=2536 Z31performance.com]
* FS5W71C Transmission Weight posted by: Cuda of
[http://www.z31.com Z31.com]
* T-5 FS5R90A Transmission Weight posted by: Matico40 of
[http://www.z31.com Z31.com]
* FS5R30A Transmission weight posted by: Grendel9 of
[http://www.z31.com Z31.com]
[http://www.z31.com Z31.com]


[[Category:Imported from Xenonzcar]]
[[Category:Imported from Xenonzcar]]

Latest revision as of 22:55, 20 October 2026

Imported page. This page was converted from an archived copy of "Z31 Transmission Specifications and Variations" (Xenonzcar, fetched 2026-05-15). The conversion was mechanical, so tables, links and formatting may contain conversion artefacts. Compare against the archived copy if something looks wrong. The content belongs to its original authors.

Z31 Transmission Specifications and Variations[edit]

The Z31 came with three different manual 5 speed transmissions and 2 different Automatics.

Manual Transmission Specifications[edit]

The Z31 came with three different manual 5 speed transmissions. All manual non-turbos used a 5 speed Nissan transmission (FS5W71C) which is quite reliable. The 84-86 manual turbos used a Borg-Warner T-5 5 speed (FS5R90A). The 87-89 manual turbo transmissions are a Nissan made (FS5R30A) model. Internally, they are the same as the Nissan transmission found in z32 turbos, trucks, pathfinders, etc. The 1987 model FS5R30A has a little different gear set than the 1988 and 1989.Non-turbo (All Years):FS5W71C (Nissan 5-speed, highly reliable)Turbo 1984-1986:FS5R90A (Borg-Warner T-5 5-speed)Turbo 1987-1989:FS5R30A (Nissan 5-speed, shared with Z32 turbos, trucks, Pathfinders, etc.)- 1987 model has a unique gear set

  • 1988–1989 models use a different ratio

All Z31 manual transmissions have synchros on every forward gear. Change your gear oil regularly, and these boxes will last for years without trouble!

Manual Transmission Gear Ratios[edit]

1984-1989 Non Turbo
FS5W71C 		1984-1986 Turbo
FS5R90A 		1987 Turbo
FS5R30A 		1988-1989 Turbo
FS5R30A
1st Gear 3.321 3.350 3.324 3.324
2nd Gear 1.902 2.056 2.077 2.077
3rd Gear 1.308 1.376 1.360 1.360
4th Gear 1.000 1.000 1.000 1.000
5th Gear 0.759 0.752 0.751 0.711
Reverse 3.636 3.153 3.382 3.382

Manual Transmission Fluids and Levels[edit]

Transmission Model Model Z31 Fluid Capacity Fluid Type
FS5W71C 1984 - 1989 Non Turbo 4-1/4 pt API GL-4
FS5R90A 1984 - 1986 Turbo 4 pt API GL-4
(SAE 80W-90)
or type DEXRON
FS5R30A 1987 - 1989 Turbo 5-1/8 pt API GL-4

Manual Transmission Weight[edit]

1986-1989 Non Turbo
FS5W71C 		1984-1986 Turbo T-5
FS5R90A 		1987-1989 Turbo
FS5R30A
94 lbs (No fluid, clutch fork, throwout bearing, or shifter) 102.2 lbs (with throwout bearing & all switches; shifter removed) Unknown

Automatic Specifications[edit]

The Z31 was offered with 4 different Jatco automatic transmissions. All are the 4N71B model. 1985-1989 models feature an electronic lockup function and these car called the E4N71B. The main difference between all these models are with the number of clutches depending on the use with Turbo models having more clutches in them for higher power holding.

These transmissions are based on the light-duty L4N71B model previously used in the Datsun 810. The E4N71B allows lockup in all forward gears, using a microprocessor to electronically control the torque converter lockup.

The overdrive switch in these automatics includes a temperature sensor, preventing the transmission from shifting into overdrive until the fluid is sufficiently warmed up. This helps to avoid possible damage from cold shifts.

Level 10 used to make an upgrade kit for these transmissions that could handle 500+ hp, but it is no longer available.

Automatic Gear Ratios[edit]

4N71B E4N71B
1st Gear 2.458 2.458
2nd Gear 1.458 1.458
3rd Gear 1.000 1.000
4th Gear 0.686 0.686
Reverse 2.182 2.400

Automatic Transmission Fluids and Levels[edit]

E4N71B 4N71B
Fluid Type Auto Trans DEXRON Auto Trans DEXRON
Capacity 7-3/8 qt 7-3/8 qt

Specifications And Adjustments[edit]

Transmission Model Code X8075 X8006
Stamp Mark on Torque Converter GK GC
Direct Clutch Specs
Number Of Drive Plates 2 3
Number Of Driven Plates 2 3
Clearance mm (in)
Standard 1.6 - 1.8 (0.063 - 0.071)
Allowable Limit 2.0 (0.079) 2.2 (0.087)
Drive Plate Thickness mm (in)
Standard 1.50 - 1.65 (0.0591 - 0.0650)
Allowable Limit 1.4 (0.055)
Thickness of
Retaining Plates 		X8075 X8006
Thickness mm (in) Part Number Thickness mm (in) Part Number
5.6 (0.220) 31567-X2903 5.8 (0.220) 31567-X2904
5.8 (0.220) 31567-X2904 6.0 (0.220) 31567-X2905
6.0 (0.220) 31567-X2905 6.2 (0.220) 31567-X2906
6.2 (0.220) 31567-X2906 6.4 (0.220) 31507-X8600
6.4 (0.220) 31507-X8600 6.6 (0.220) 31507-X8601
6.6 (0.220) 31507-X8601 6.8 (0.220) 31537-X2800
6.8 (0.220) 31537-X2800 7.0 (0.220) 31537-X2801
7.0 (0.220) 31537-X2801 7.2 (0.283) 31537-X0900
7.4 (0.291) 31537-X0901
High Reverse Clutch (Front)
Number Of Drive Plates 3 4
Number Of Driven Plates 5 5
Clearance mm (in)
Standard 1.6 - 1.8 (0.063 - 0.071)
Allowable Limit 2.2 (0.087) 2.4 (0.094)
Drive Plate Thickness mm (in)
Standard 1.50 - 1.65 (0.0591 - 0.0650)
Allowable Limit 1.4 (0.055)
Thickness of Retaining Plates X8075 X8006
Thickness mm (in) Part Number Thickness mm (in) Part Number
5.0 (0.197) 31567-X2900 5.0 (0.197) 31567-X2900
5.2 (0.205) 31567-X2901 5.2 (0.205) 31567-X2901
5.4 (0.213) 31567-X2902 5.4 (0.213) 31567-X2902
5.6 (0.220) 31567-X2903 5.6 (0.220) 31567-X2903
5.8 (0.228) 31567-X2904 5.8 (0.228) 31567-X2904
6.0 (0.236) 31567-X2905 6.0 (0.236) 31567-X2905
6.2 (0.244) 31567-X2906
Forward Clutch (Rear) X8075 X8006
Number of Drive Plates 6 6
Number of Driven Plates 6 6
Clearance mm (in)
Standard 0.8 - 1.5 (0.031 - 0.059)
Allowable Limit 2.0 (0.079)
Drive Plate Thickness mm (in)
Standard 1.50 - 1.65 (0.0591 - 0.0650)
Allowable Thickness 1.4 (0.055)
Thickness Of Retaining Plate Thickness mm (in) Part Number
4.8 (0.189) 31567-X0300
Low & Reverse Brake X8075 X8006
Number Of Drive Plates 6 7
Number Of Driven Plates 6 7
Clearance mm (in)
Standard 0.80 - 1.05 (0.0315 - 0.0413)
Allowable Limit 2.0 (0.079) 2.2 (0.087)
Drive Plate Thickness mm (in)
Standard 1.90 - 2.05 (0.0748 - 0.0807)
Allowable Limit 1.8 (0.071)
Thickness Of
Retaining Plate 		X8075 X8006
Thickness mm (in) Part Number Thickness mm (in) Part Number
11.8 (0.465) 31667-X0300 7.8 (0.307) 31667-X0500
12.0 (0.472) 31667-X0301 8.0 (0.315) 31667-X0501
12.2 (0.480) 31667-X0302 8.2 (0.323) 31667-X0502
12.4 (0.488) 31667-X0303 8.4 (0.331) 31667-X0503
12.6 (0.496) 31667-X0304 8.6 (0.339) 31667-X0504
12.8 (0.504) 31667-X0305 8.8 (0.346) 31667-X0505
2nd Brake Band Piston Size mm (in) X8075 X8006
Big Diameter 64 (2.52) 80 (3.15)
Small Diameter 40 (1.57) 50 (1.97)
O.D. Brake band Piston Size mm (in)
Big Diameter 60 (2.36) 64 (2.52)
Small Diameter 36 (1.42) 36 (1.46)
Front End Play mm (in)
0.5 - 0.8 (0.020 - 0.031)
Thickness of High-reverse Clutch (front) thrust Washer Thickness mm (in) Part number
1.3 (0.051) 31528-X0107
1.5 (0.059) 31528-X0106
1.7 (0.067) 31528-X0105
1.9 (0.075) 31528-X0100
2.1 (0.083) 31528-X0101
2.3 (0.091) 31528-X0102
2.5 (0.098) 31528-X0103
2.7 (0.106) 31528-X0104
Total End Play mm (in)
0.25 - 0.50 (0.0098 - 0.0197)
Thickness of oil pump Cover Bearing Race Thickness mm (in) Part number
1.2 (0.047) 31556-X0100
1.4 (0.055) 31556-X0101
1.6 (0.063) 31556-X0102
1.8 (0.071) 31556-X0103
2.0 (0.079) 31556-X0104
2.2 (0.087) 31556-X0105
O.D. Pack End Play mm (in)
0.5 - 0.8 (0.020 - 0.031)
Thickness Of O.D. Thrust Washer Thickness mm (in) Part number
1.5 (0.059) 31528-X0106
1.7 (0.067) 31528-X0105
1.9 (0.075) 31528-X0100
2.1 (0.083) 31528-X0101
2.3 (0.091) 31528-X0102
2.5 (0.098) 31528-X0103
2.7 (0.106) 31528-X0104
O.D Total End Play
0.25 - 0.50 (0.0098 - 0.0197)
Thickness Of O.D. Bearing Race Thickness mm (in) Part number
1.2 (0.047) 31556-X0100
1.4 (0.055) 31556-X0101
1.6 (0.063) 31556-X0102
1.8 (0.071) 31556-X0103
2.0 (0.079) 31556-X0104
2.2 (0.087) 31556-X0105
Oil Pump Clearance mm (in)
Outer Gear-pump Housing
Standard 0.05 - 0.20 (0.0020 - 0.0079)
Allowable Limit 0.25 (0.0098)
Outer Gear Crescent
Standard 0.14 - 0.21 (0.0055 - 0.0083)
Allowable Limit 0.25 (0.0098)
Gear-pump Cover
Standard 0.02 - 0.04 (0.0008 - 0.0016)
Allowable Limit 0.08 (0.0031)
Drum Support
Seal Ring-ring Groove
Standard 0.05 - 0.20 (0.0020 - 0.0079)
Allowable Limit 0.20 (0.0079)
Oil Distributor
Seal Ring-ring Groove
Standard 0.04 - 0.16 (0.0016 - 0.0063)
Allowable Limit 0.16 (0.0063)
Planetary Carrier
Clearance Between Pinion Washer and Planetary Carrier
Standard 0.20 - 0.70 (0.0079 - 0.0276)
Allowable Limit 0.80 (0.0315)
Run-out of oil pump cover to housing mm (in) Less Than 0.07 (0.0028)
Run-out of Drum support to O.D. case mm (in) Less Than 0.05 (0.0020)
Stall Revolution Specs
VG30E non-turbo 2,150 - 2,450 RPM
VG30ET Turbo 2,500 - 2,800 RPM

Interchange[edit]

All Z31 transmissions are completely interchangeable with the correct parts. They have no problems bolting up to the motor. One problem is they don't always mount to the body correctly. You may have to drill and tap new holes for the transmission mount.

Pro Tip: Driveshaft Sizing

Each transmission has its own output shaft size and overall length. If you have a two-seater Z31, just match your new transmission with a driveshaft from another two-seater with the same transmission. Four-seater owners, especially those converting to turbo or manual, may need to have a driveshaft lengthened—these are much harder to find. Plenty of FS5W71C 2+2 driveshafts exist, so that's your easiest route for 2+2 5-speed swaps.

Pro Tip: Z32 Manual Transmissions

Want to run a Z32 manual transmission in your Z31? You'll need an '89–'91 Maxima SE flywheel, and you'll have to modify both the stock shifter and transmission mount. Read more about this swap here.

Pro Tip: Automatic Swaps & Flexplates

If you're swapping one automatic for another, make sure you're matching the same transmission type—Non-Turbo for Non-Turbo, Electronic for Electronic, etc. If the torque converter doesn't line up properly with the flexplate (either too tight or too far away), you likely have mismatched parts. Turbo and Non-Turbo automatics use different torque converters and flexplates. Always match the converter and flexplate to your transmission to avoid pump drive damage!

automatic-flex1.jpg

automatic-flex2.jpg

Sources Used[edit]

Z31.com

  • T-5 FS5R90A Transmission Weight posted by: Matico40 of

Z31.com

  • FS5R30A Transmission weight posted by: Grendel9 of

Z31.com

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