Z31/transmissions php - Revision history

XenonzcarImporter: Rewrite 1 archive URL(s) to internal wikilinks

2026-05-17T01:59:28Z

Rewrite 1 archive URL(s) to internal wikilinks

← Older revision		Revision as of 01:59, 17 May 2026
Line 275:		Line 275:
	=== Sources Used ===		=== Sources Used ===

	* [~~https://dev.z31library.com/xenonzcar_archive/z31~~/z31fsm.php 1984-1988 Nissan 300ZX Factory Service Manual]		* [[Z31/z31fsm php\|1984-1988 Nissan 300ZX Factory Service Manual]]
	* [http://www.az-zbum.com/information.transmission.shtml AZ-Zbum]		* [http://www.az-zbum.com/information.transmission.shtml AZ-Zbum]
	* [http://www.z31performance.com/forum/viewtopic.php?f=3&t=2536 Z31performance.com]		* [http://www.z31performance.com/forum/viewtopic.php?f=3&t=2536 Z31performance.com]

XenonzcarImporter: Reformat: split adjacent link runs into bulleted lists

2026-05-16T21:29:49Z

Reformat: split adjacent link runs into bulleted lists

← Older revision		Revision as of 21:29, 16 May 2026
Line 275:		Line 275:
	=== Sources Used ===		=== Sources Used ===

	[https://dev.z31library.com/xenonzcar_archive/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		* [https://dev.z31library.com/xenonzcar_archive/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]]

XenonzcarImporter: Inline image refs: rewrite to local archive; clean empty image artifacts

2026-05-16T18:01:30Z

Inline image refs: rewrite to local archive; clean empty image artifacts

← Older revision		Revision as of 18:01, 16 May 2026
Line 1:		Line 1:
	{{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://dev.z31library.com/xenonzcar_archive/z31/transmissions.php.html\|archive=https://dev.z31library.com/xenonzcar_archive/z31/transmissions.php.html\|fetched=2026-05-15}}

	== Z31 Transmission Specifications and Variations ==		== Z31 Transmission Specifications and Variations ==
Line 269:		Line 269:
	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://dev.z31library.com/xenonzcar_archive/2025siteimages/automatic-flex1.jpg

	~~[http~~://~~www~~.~~xenonzcar~~.com/2025siteimages/automatic-flex2.jpg ~~image: Flexplate 2]~~		https://dev.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		[https://dev.z31library.com/xenonzcar_archive/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
	[http://www.z31.com Z31.com] - T-5 FS5R90A Transmission Weight posted by: Matico40 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] - FS5R30A Transmission weight posted by: Grendel9 of

XenonzcarImporter: XenonzcarImporter moved page Sites/Xenonzcar/z31/transmissions php to Z31/transmissions php without leaving a redirect: Flatten Sites/ namespace; provenance preserved via ImportedFrom banner

2026-05-16T06:38:42Z

XenonzcarImporter moved page Sites/Xenonzcar/z31/transmissions php to Z31/transmissions php without leaving a redirect: Flatten Sites/ namespace; provenance preserved via ImportedFrom banner

← Older revision		Revision as of 06:38, 16 May 2026
(No difference)

XenonzcarImporter: Site import

2026-05-16T06:27:42Z

Site import

New page

{{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}}

== Z31 Transmission Specifications and Variations ==

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

=== Manual Transmission Specifications ===

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 ===

| 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 ===

| 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 ===

| 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 ===

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.

[http://www.levelten.com 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 ===

| 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 ===

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

=== Specifications And Adjustments ===

| 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 ===

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. [http://www.z31performance.com/forum/viewtopic.php?f=3&t=2536 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!

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

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

=== 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
[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]

[[Category:Imported from Xenonzcar]]