Z31/differentialinfo

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There were 11 different differentials offered in the Z31. They are all R200 models Made by Hitachi I think? The differences are as follows:

• USDM 300zx 84-87 NA = R200 3.700:1 open 37 tooth Ring gear 10 tooth Pinion
• USDM 300zx 88-89 NA = R200 3.900:1 open 39 tooth Ring gear 10 tooth Pinion
• USDM 300zx 84-86 T and JDM 84-89 T= R200 3.545:1 open 39 tooth Ring gear 11 tooth Pinion
• USDM 300zx 87-89 T = R200 3.700:1 clutch LSD * 37 tooth Ring gear 10 tooth Pinion
• USDM 300zx 88SS = R200 3.700:1 viscous LSD ** 37 tooth Ring gear 10 tooth Pinion
• EURO 300ZX Turbo Sold in Europe = R200 3.364:1 open 37 tooth Ring gear 11 tooth Pinion - 4 spider gears
• EURO 300ZX Non Turbo Sold in Europe = R200 3.700:1 open 37 tooth Ring gear 10 tooth Pinion - 2 spider gears
• EURO 300ZX Turbo Sold in the Europe = R200 3.545:1 open 39 tooth Ring gear 11 tooth Pinion - 4 Spider gears
• EURO 300ZX Turbo Sold in the Middle East = R200 3.545:1 open 39 tooth Ring gear 11 tooth Pinion - 4 Spider gears
• EURO 300ZX Non Turbo Sold in the Middle East= R200 3.700:1 open 37 tooth Ring gear 10 tooth Pinion - 4 Spider Gears
• EURO 300ZX Turbo Sold Else where = R200 3.545:1 open 39 tooth Ring gear 11 tooth Pinion - 2 Spider gears
• EURO 300ZX Non Turbo Sold Else where = R200 3.700:1 open 37 tooth Ring gear 10 tooth Pinion - 4 Spider gears
• JDM 300zx Manual = R200 3.545:1 open 39 tooth Ring gear 11 tooth Pinion - 2 Spider gears
• JDM 200Z ZS ZG Manual and Auto = R200 4.111:1 open 37 tooth Ring gear 9 tooth Pinion - 2 spider gears
• JDM 200ZR Manual = R200 4.375:1 viscous LSD 35 tooth Ring gear 8 tooth Pinion - 4 spider gears
• JDM 200ZR Auto = R200 4.625:1 viscous LSD 37 tooth Ring gear 8 tooth Pinion - 4 spider gears
• JDM 300ZR Manual and Auto = R200 4.111:1 clutch LSD - 37 tooth Ring gear - 9 tooth Pinion - 4 spider gears

USDM Cars only *Only 87 Turbo cars made after 04/87 had a LSD. Before this, they were open differentials. Canada did not get a LSD until the 88 model year.

USDM Cars only ** Only available in the 1988 Shiro model

On the Limited slip differentials a finned rear cover was added from the factory. This is a usual dead giveaway of a LSD in a Z31 in the USDM.

EURO market cars Sold in Europe had an external Differential Oil Cooler installed. This Consisted of an Electric pump, Oil Cooler, and lines as well as a Temperature switch.

Driveshaft Yoke/Flange

There were two different Yokes that were used on the Z31 models depending on years. Early Models had a rectangular flange and bolt pattern and the Late models had a circular flange with a square bolt pattern.


Diff Fluid Recommendations USDM:

• R200 - 3-7/8 pt.
• Open diff: API GL-5
• Clutch diff: API GL-5 and SAE 80W-90 approved for Nissan LSD
• Viscous LSD: API GL-5 and SAE 80W-90

Diff Fluid Recommendations EURO:

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 on this page:

• 1984-1989 Nissan 300ZX USDM Factory Service Manual
• EURO Market Nissan 300ZX Factory Service Manual- 1984 Nissan Fairlady Z Product Brochure
• 1987 Nissan Fairlady Z Product Brochure