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


== Z31 Differential Specifications and Variations ==
== Z31 Differential Specifications and Variations ==
Line 7: Line 7:
=== Gear Sets Offered ===
=== Gear Sets Offered ===


| Model | Type | Ratio | Ring Gear / Pinion | Notes |
{| class="wikitable"
|---|---|---|---|---|
! Model
| USDM 300ZX 84-87 NA | R200 Open | 3.700:1 | 37T / 10T | |
! Type
| USDM 300ZX 88-89 NA | R200 Open | 3.900:1 | 39T / 10T | |
! Ratio
| USDM 300ZX 84-86 T & JDM 84-89 T | R200 Open | 3.545:1 | 39T / 11T | |
! Ring Gear / Pinion
| USDM 300ZX 87-89 T | R200 Clutch LSD* | 3.700:1 | 37T / 10T | |
! Notes
| USDM 300ZX 88SS | R200 Viscous LSD** | 3.700:1 | 37T / 10T | |
|-
| EURO 300ZX Turbo (Europe) | R200 Open | 3.364:1 | 37T / 11T | 4 spider gears |
| USDM 300ZX 84-87 NA
| EURO 300ZX Non-Turbo (Europe) | R200 Open | 3.700:1 | 37T / 10T | 2 spider gears |
| R200 Open
| EURO 300ZX Turbo (Europe) | R200 Open | 3.545:1 | 39T / 11T | 4 spider gears |
| 3.700:1
| EURO 300ZX Turbo (Middle East) | R200 Open | 3.545:1 | 39T / 11T | 4 spider gears |
| 37T / 10T
| EURO 300ZX Non-Turbo (Middle East) | R200 Open | 3.700:1 | 37T / 10T | 4 spider gears |
|
| EURO 300ZX Turbo (Elsewhere) | R200 Open | 3.545:1 | 39T / 11T | 2 spider gears |
|-
| EURO 300ZX Non-Turbo (Elsewhere) | R200 Open | 3.700:1 | 37T / 10T | 4 spider gears |
| USDM 300ZX 88-89 NA
| JDM 300ZX Manual | R200 Open | 3.545:1 | 39T / 11T | 2 spider gears |
| R200 Open
| JDM 200Z ZS ZG Manual & Auto | R200 Open | 4.111:1 | 37T / 9T | 2 spider gears |
| 3.900:1
| JDM 200ZR Manual | R200 Viscous LSD | 4.375:1 | 35T / 8T | 4 spider gears |
| 39T / 10T
| JDM 200ZR Auto | R200 Viscous LSD | 4.625:1 | 37T / 8T | 4 spider gears |
|
| JDM 300ZR Manual & Auto | R200 Clutch LSD | 4.111:1 | 37T / 9T | 4 spider gears |
|-
| USDM 300ZX 84-86 T & JDM 84-89 T
| R200 Open
| 3.545:1
| 39T / 11T
|
|-
| USDM 300ZX 87-89 T
| R200 Clutch LSD*
| 3.700:1
| 37T / 10T
|
|-
| USDM 300ZX 88SS
| R200 Viscous LSD**
| 3.700:1
| 37T / 10T
|
|-
| EURO 300ZX Turbo (Europe)
| R200 Open
| 3.364:1
| 37T / 11T
| 4 spider gears
|-
| EURO 300ZX Non-Turbo (Europe)
| R200 Open
| 3.700:1
| 37T / 10T
| 2 spider gears
|-
| EURO 300ZX Turbo (Europe)
| R200 Open
| 3.545:1
| 39T / 11T
| 4 spider gears
|-
| EURO 300ZX Turbo (Middle East)
| R200 Open
| 3.545:1
| 39T / 11T
| 4 spider gears
|-
| EURO 300ZX Non-Turbo (Middle East)
| R200 Open
| 3.700:1
| 37T / 10T
| 4 spider gears
|-
| EURO 300ZX Turbo (Elsewhere)
| R200 Open
| 3.545:1
| 39T / 11T
| 2 spider gears
|-
| EURO 300ZX Non-Turbo (Elsewhere)
| R200 Open
| 3.700:1
| 37T / 10T
| 4 spider gears
|-
| JDM 300ZX Manual
| R200 Open
| 3.545:1
| 39T / 11T
| 2 spider gears
|-
| JDM 200Z ZS ZG Manual & Auto
| R200 Open
| 4.111:1
| 37T / 9T
| 2 spider gears
|-
| JDM 200ZR Manual
| R200 Viscous LSD
| 4.375:1
| 35T / 8T
| 4 spider gears
|-
| JDM 200ZR Auto
| R200 Viscous LSD
| 4.625:1
| 37T / 8T
| 4 spider gears
|-
| JDM 300ZR Manual & Auto
| R200 Clutch LSD
| 4.111:1
| 37T / 9T
| 4 spider gears
|}


* Clutch LSD | ** Viscous LSD
* Clutch LSD | ** Viscous LSD
Line 47: Line 137:
=== Diff Fluid Recommendations (EURO) ===
=== Diff Fluid Recommendations (EURO) ===


| Location of Sale | Oil Capacity (Liters / IMP PT) | Oil Type |
{| class="wikitable"
|---|---|---|
! Location of Sale
| Europe | 2.1 (3 3/4) | API GL-5 |
! Oil Capacity (Liters / IMP PT)
| Middle East | 1.8 (3 1/8) | API GL-5 |
! Oil Type
| Other | 1.3 (2 1/4) | API GL-5 |
|-
| Europe
| 2.1 (3 3/4)
| API GL-5
|-
| Middle East
| 1.8 (3 1/8)
| API GL-5
|-
| Other
| 1.3 (2 1/4)
| API GL-5
|}


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


* [https://dev.z31library.com/xenonzcar_archive/z31/z31fsm.php 1984-1989 Nissan 300ZX USDM Factory Service Manual]
* [[Z31/z31fsm php|1984-1989 Nissan 300ZX USDM Factory Service Manual]]
* [https://dev.z31library.com/xenonzcar_archive/z31/z31fsm.php EURO Market Nissan 300ZX Factory Service Manual]- 1984 Nissan Fairlady Z Product Brochure
* [[Z31/z31fsm php|EURO Market Nissan 300ZX Factory Service Manual]]- 1984 Nissan Fairlady Z Product Brochure
* 1987 Nissan Fairlady Z Product Brochure
* 1987 Nissan Fairlady Z Product Brochure


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

Latest revision as of 22:54, 20 October 2026

Imported page. This page was converted from an archived copy of "Z31 Differential 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 Differential Specifications and Variations[edit]

There were 11 different differentials offered in the Z31. They are all R200 models made by Hitachi (most likely). The differences are as follows:

Gear Sets Offered[edit]

Model Type Ratio Ring Gear / Pinion Notes
USDM 300ZX 84-87 NA R200 Open 3.700:1 37T / 10T
USDM 300ZX 88-89 NA R200 Open 3.900:1 39T / 10T
USDM 300ZX 84-86 T & JDM 84-89 T R200 Open 3.545:1 39T / 11T
USDM 300ZX 87-89 T R200 Clutch LSD* 3.700:1 37T / 10T
USDM 300ZX 88SS R200 Viscous LSD** 3.700:1 37T / 10T
EURO 300ZX Turbo (Europe) R200 Open 3.364:1 37T / 11T 4 spider gears
EURO 300ZX Non-Turbo (Europe) R200 Open 3.700:1 37T / 10T 2 spider gears
EURO 300ZX Turbo (Europe) R200 Open 3.545:1 39T / 11T 4 spider gears
EURO 300ZX Turbo (Middle East) R200 Open 3.545:1 39T / 11T 4 spider gears
EURO 300ZX Non-Turbo (Middle East) R200 Open 3.700:1 37T / 10T 4 spider gears
EURO 300ZX Turbo (Elsewhere) R200 Open 3.545:1 39T / 11T 2 spider gears
EURO 300ZX Non-Turbo (Elsewhere) R200 Open 3.700:1 37T / 10T 4 spider gears
JDM 300ZX Manual R200 Open 3.545:1 39T / 11T 2 spider gears
JDM 200Z ZS ZG Manual & Auto R200 Open 4.111:1 37T / 9T 2 spider gears
JDM 200ZR Manual R200 Viscous LSD 4.375:1 35T / 8T 4 spider gears
JDM 200ZR Auto R200 Viscous LSD 4.625:1 37T / 8T 4 spider gears
JDM 300ZR Manual & Auto R200 Clutch LSD 4.111:1 37T / 9T 4 spider gears
  • Clutch LSD | ** Viscous LSD

Additional Notes[edit]

USDM Cars Only:Only 87 Turbo cars produced after 04/87 were equipped with LSD. Earlier models had open differentials. Canada did not receive LSD until the 1988 model year.USDM Cars Only:The 1988 Shiro Special was the only model to feature the viscous LSD from factory.LSD Identification:Factory-equipped LSD units typically came with a finned rear differential cover, making it an easy visual identifier on USDM Z31s.EURO Market Models:European-market cars came with an external differential oil cooler from the factory. This system included an electric pump, oil cooler, fluid lines, and a temperature switch.

Driveshaft/Differential Yoke/Flange Differences[edit]

There were two different yokes used on the Z31 models depending on the production year:

Early Models:Featured a rectangular flange and bolt pattern.Late Models:Came with a circular flange and square bolt pattern.

![Z31 Differential Yoke Flanges](images/Differential/Diff-flanges.jpg)

Diff Fluid Recommendations (USDM)[edit]

R200 Capacity:3-7/8 pt.Open Diff:API GL-5Clutch LSD:API GL-5, SAE 80W-90 approved for Nissan LSDViscous LSD:API GL-5, SAE 80W-90

Diff Fluid Recommendations (EURO)[edit]

Location of Sale Oil Capacity (Liters / IMP PT) Oil Type
Europe 2.1 (3 3/4) API GL-5
Middle East 1.8 (3 1/8) API GL-5
Other 1.3 (2 1/4) API GL-5

Sources Used[edit]

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