Z31/crossmemberbushings php - Revision history

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

2026-05-17T01:59:27Z

Rewrite 1 archive URL(s) to internal wikilinks

← Older revision		Revision as of 01:59, 17 May 2026
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	=== 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]]
	* Bad Bushing picture by: RED300Z		* Bad Bushing picture by: RED300Z
	* All other pictures by: Neil86T		* All other pictures by: Neil86T

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

XenonzcarImporter: Fix: convert markdown link syntax to wiki syntax; remove broken self-anchor links

2026-05-16T23:35:11Z

Fix: convert markdown link syntax to wiki syntax; remove broken self-anchor links

← Older revision		Revision as of 23:35, 16 May 2026
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	== Z31 Rear Cross Member Bushing Replacement Clunk from Rear ==		== Z31 Rear Cross Member Bushing Replacement Clunk from Rear ==

	~~![](~~https://dev.z31library.com/xenonzcar_archive/z31/images/Rear ~~Crossmember bushings~~/badbushing ~~RED300Z~~.jpg)
			https://dev.z31library.com/xenonzcar_archive/z31/images/Rear%20Crossmember%20bushings/badbushing%20RED300Z.jpg


	A common problem found on the Z31 is a Clunk from the rear end of the car when shifting gears or accelerating/decelerating. This is usually caused by worn sub frame bushings and/or differential mount.		A common problem found on the Z31 is a Clunk from the rear end of the car when shifting gears or accelerating/decelerating. This is usually caused by worn sub frame bushings and/or differential mount.

XenonzcarImporter: Reformat: split adjacent link runs into bulleted lists

2026-05-16T21:29:48Z

Reformat: split adjacent link runs into bulleted lists

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

	[https://dev.z31library.com/xenonzcar_archive/z31/z31fsm.php 1984-1988 Nissan 300ZX Factory Service Manual]- Bad Bushing picture by: RED300Z		[https://dev.z31library.com/xenonzcar_archive/z31/z31fsm.php 1984-1988 Nissan 300ZX Factory Service Manual]
			* Bad Bushing picture by: RED300Z
	* All other pictures by: Neil86T		* All other pictures by: Neil86T

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

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

2026-05-16T18:01:28Z

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

← Older revision		Revision as of 18:01, 16 May 2026
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	{{ImportedFrom\|site=Xenonzcar\|title=XenonZcar\|url=~~http~~://~~www~~.~~xenonzcar~~.com/z31/crossmemberbushings.php.html\|archive=https://dev.z31library.com/xenonzcar_archive/z31/crossmemberbushings.php.html\|fetched=2026-05-15}}		{{ImportedFrom\|site=Xenonzcar\|title=XenonZcar\|url=https://dev.z31library.com/xenonzcar_archive/z31/crossmemberbushings.php.html\|archive=https://dev.z31library.com/xenonzcar_archive/z31/crossmemberbushings.php.html\|fetched=2026-05-15}}

	== Z31 Rear Cross Member Bushing Replacement Clunk from Rear ==		== Z31 Rear Cross Member Bushing Replacement Clunk from Rear ==

	![](~~http~~://~~www~~.~~xenonzcar~~.com/z31/images/Rear Crossmember bushings/badbushing RED300Z.jpg)		![](https://dev.z31library.com/xenonzcar_archive/z31/images/Rear Crossmember bushings/badbushing RED300Z.jpg)

	A common problem found on the Z31 is a Clunk from the rear end of the car when shifting gears or accelerating/decelerating. This is usually caused by worn sub frame bushings and/or differential mount.		A common problem found on the Z31 is a Clunk from the rear end of the car when shifting gears or accelerating/decelerating. This is usually caused by worn sub frame bushings and/or differential mount.
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	=== Sources Used ===		=== Sources Used ===

	[~~http~~://~~www~~.~~xenonzcar~~.com/z31/z31fsm.php 1984-1988 Nissan 300ZX Factory Service Manual]- Bad Bushing picture by: RED300Z		[https://dev.z31library.com/xenonzcar_archive/z31/z31fsm.php 1984-1988 Nissan 300ZX Factory Service Manual]- Bad Bushing picture by: RED300Z
	* All other pictures by: Neil86T		* All other pictures by: Neil86T

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

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

2026-05-16T06:38:41Z

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

← Older revision	Revision as of 06:38, 16 May 2026
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XenonzcarImporter: Site import

2026-05-16T06:27:24Z

Site import

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{{ImportedFrom|site=Xenonzcar|title=XenonZcar|url=http://www.xenonzcar.com/z31/crossmemberbushings.php.html|archive=https://dev.z31library.com/xenonzcar_archive/z31/crossmemberbushings.php.html|fetched=2026-05-15}}

== Z31 Rear Cross Member Bushing Replacement Clunk from Rear ==

![](http://www.xenonzcar.com/z31/images/Rear Crossmember bushings/badbushing RED300Z.jpg)

A common problem found on the Z31 is a Clunk from the rear end of the car when shifting gears or accelerating/decelerating. This is usually caused by worn sub frame bushings and/or differential mount.

''WARNING'' - Do this modification at your own risk. We Are not responsable for any issues of your own doing.

== Parts Needed ==

You can choose to replace the parts with stock rubber or upgrade to the polyurethane replacements. Note: The polyurethane replacements are less expensive and will last longer.

=== Stock Rubber Parts ===

-
[https://www.nissanpartsdeal.com/parts/nissan-insul-diff-mtg~55476-01p10.html?vin=&make=Nissan&model=300ZX&year=1984&submodel=&extra1=&extra2=&filter=( 1984-1986 Nissan Part # 55476-01P10 - Insulator, Differential Mounting (No Longer Available)]) -
[https://www.nissanpartsdeal.com/parts/nissan-insulator-diffe~55476-01p20.html?vin=&make=Nissan&model=300ZX&year=1984&submodel=&extra1=&extra2=&filter=( 1987-1989 Nissan Part # 55476-01P20 - Insulator, Differential Mounting (No Longer Available)]) -
[https://www.nissanpartsdeal.com/parts/nissan-insulatr-membr~55466-01p10.html?vin=&make=Nissan&model=300ZX&year=1984&submodel=&extra1=&extra2=&filter=( (x2) Nissan Part # 55466-01P10 - Insulator, Member Mounting])

=== Polyurethane Parts ===

-
[https://www.prothanesuspensionparts.com/14101?srsltid=AfmBOornW9AWvRnkdq-KVb0idVt36mAnoVRyafqmF4UlYjOlQK8CcqTz Prothane Polyurethane Rear Cross Member Bushings Part Number:14101]– $65.54 from[https://www.prothanesuspensionparts.com Prothane Suspension Parts] -
[https://apexengineered.com/shop/z31-300zx/differential-mount-bushing/ Differential Mount Bushing Z31 300ZX]– $195.00 – $215.00 from[https://apexengineered.com/shop/ Apex Engineered]

=== Tools Needed ===

* Floor Jack
* Jack Stands
* Breaker Bar
* Various Metric Sockets
* Ratchet
* Hacksaw
* Press
* Paint Pen

== Procedure ==

* Jack the car up and secure on jack stands.
* Pull the wheels off the rear.
* Place a floor jack under the differential housing to support it.
* Remove the two nuts securing the differential mount to the rear housing.
* Remove the two bolts and two nuts holding the differential mount to the body. The mount should now be free.
* Replace the old mount with the new one and tighten:
* Mount-to-body bolts:
'''22–29 ft-lbs''' - Mount-to-body nuts:
'''43–58 ft-lbs''' - Mount-to-differential carrier nuts:
'''43–58 ft-lbs'''

* Mount-to-body bolts:
* Remove the rear cross member by disconnecting the rear control arms. This is the hardest part.
* Remove the rear sway bar (4 bolts). If bushings are worn, replace them now.
* Disconnect the emergency brake cables from the calipers and main cable.
* Remove the rear control arms from the cross member:
* Each side has one regular bolt/nut and one eccentric bolt/nut.
* Mark the eccentric bolt position with a paint pen before removal for alignment.
* Torque spec:
'''72–87 ft-lbs'''

* Support the differential and remove the 4 bolts/nuts holding it to the cross member.
* Remove the 2 nuts holding the cross member to the body (torque spec:
'''58–80 ft-lbs'''). - Remove the 4 nuts holding the cross member stays. The cross member can now be removed.
-

* Press out old bushings and install new ones.

This is what they usually look like when removed.

* Use a cold chisel to punch out the metal sleeve of the bushing.

* Clean everything thoroughly.

'''Assembly is reverse of disassembly.'''

=== Sources Used ===

[http://www.xenonzcar.com/z31/z31fsm.php 1984-1988 Nissan 300ZX Factory Service Manual]- Bad Bushing picture by: RED300Z
* All other pictures by: Neil86T

[[Category:Imported from Xenonzcar]]