Nissan 370Z Forum  

Rear Subframe and Differential Bushing Question

Hello, Going through a nightmare solid diff bushing install. I got the bushing (one on the subframe) in about 80% and couldn't get it in anymore. Fed up, I removed

Go Back   Nissan 370Z Forum > Nissan 370Z Tech Area > Brakes & Suspension


Like Tree5Likes
  • 1 Post By Rusty
  • 2 Post By Tractionless
  • 1 Post By MrJdmNismo
  • 1 Post By dat570zx

Reply
 
LinkBack Thread Tools Display Modes
Old 09-05-2020, 08:54 PM   #1 (permalink)
Base Member
 
ihaveashihtzu's Avatar
 
Join Date: Jun 2018
Location: Sacramento
Posts: 31
Drives: 08 G35, 11 370 Nismo
Rep Power: 6
ihaveashihtzu is on a distinguished road
Default Rear Subframe and Differential Bushing Question

Hello,

Going through a nightmare solid diff bushing install. I got the bushing (one on the subframe) in about 80% and couldn't get it in anymore. Fed up, I removed the entire rear subframe and took it to a place with a 20 ton press and we were able to get it in about 95% of the way? At which point their press wasn't strong enough anymore. They recommended to go somewhere with a stronger press and everything is closed until the weekday.

Attached pics.

I guess my question is.. is the bushing, as it sits now, good enough for use? I was going to take it to one last shop when they're opened and if they can't do it I was going to have to remove it and I'll just go poly.

Also, is the rear subframe on the nismos the same as the non-nismos? When I was removing the subframe, asides from the damper (which came off separately), I didn't see anything special about it. Can anyone confirm?

EDIT: Did a parts search and it shows the same part # for the subframe on both the nismo and nonnismos .
Thanks all
Attached Images
File Type: jpg bushing1.JPG (21.4 KB, 57 views)
File Type: jpg bushing2.JPG (39.6 KB, 47 views)

Last edited by ihaveashihtzu; 09-05-2020 at 09:03 PM. Reason: more info
ihaveashihtzu is offline   Reply With Quote
Old 09-05-2020, 11:58 PM   #2 (permalink)
Ronin Samurai - Assassin
 
Rusty's Avatar
 
Join Date: Dec 2011
Location: Fayettenam,Pennsyltucky
Age: 68
Posts: 34,812
Drives: 2011 Nismo GM 6M
Rep Power: 2684436
Rusty has a reputation beyond reputeRusty has a reputation beyond reputeRusty has a reputation beyond reputeRusty has a reputation beyond reputeRusty has a reputation beyond reputeRusty has a reputation beyond reputeRusty has a reputation beyond reputeRusty has a reputation beyond reputeRusty has a reputation beyond reputeRusty has a reputation beyond reputeRusty has a reputation beyond repute
Talking

Sub frames are the same.

Is that a SPL solid bushing?

From which direction did you install the bushing from? From the front, or from the rear?

Before installing the bushing. Did you make sure that there is NO burrs inside the hole. Use a flapper wheel inside the hole to smooth it out and remove the paint. Coat the inside of the hole with anti-seize. Have the bushing sit in the freezer for 24 hrs before install?

The hole is NOT perfectly round. When welding the sub-frame together. The welding distorted the hole.

You're almost there in the 2nd picture. A BF hammer might get you there. I've installed a couple of these. What you could do. Since you have the sub-frame out. Install the diff. What will be the telling point. Is how easy it is to thread the 2 front bolts into the sub-frame. If one of the bolts won't thread easy. Then you know that the bushing has to be moved. The first one I installed. I had to tap the bushing deeper into the hole to get both front bolts to thread. I had the front of the bushing flush with the hole.
ihaveashihtzu likes this.
__________________

浪人 - 殺し屋
"The Difficult Anytime, The Impossible By Appointment Only"
http://www.the370z.com/members-370z-...o-journal.html

Last edited by Rusty; 09-06-2020 at 12:09 AM.
Rusty is offline   Reply With Quote
Old 09-06-2020, 04:04 AM   #3 (permalink)
Base Member
 
ihaveashihtzu's Avatar
 
Join Date: Jun 2018
Location: Sacramento
Posts: 31
Drives: 08 G35, 11 370 Nismo
Rep Power: 6
ihaveashihtzu is on a distinguished road
Default

Quote:
Originally Posted by Rusty View Post
Sub frames are the same.

Is that a SPL solid bushing?

From which direction did you install the bushing from? From the front, or from the rear?

Before installing the bushing. Did you make sure that there is NO burrs inside the hole. Use a flapper wheel inside the hole to smooth it out and remove the paint. Coat the inside of the hole with anti-seize. Have the bushing sit in the freezer for 24 hrs before install?

The hole is NOT perfectly round. When welding the sub-frame together. The welding distorted the hole.

You're almost there in the 2nd picture. A BF hammer might get you there. I've installed a couple of these. What you could do. Since you have the sub-frame out. Install the diff. What will be the telling point. Is how easy it is to thread the 2 front bolts into the sub-frame. If one of the bolts won't thread easy. Then you know that the bushing has to be moved. The first one I installed. I had to tap the bushing deeper into the hole to get both front bolts to thread. I had the front of the bushing flush with the hole.
Thanks Rusty,

Yes it is a SPL bushing. I installed the bushing on the side closest to the rear bumper. I soaked the bushing in a dry-ice alcohol slushie for a couple hours prior to install, along with some silicone paste inside the bushing hole. The one thing I did not do was smooth out the inside which is most likely the reason for it being so difficult (sigh).

I was debating on if i should even try lining up the diff, but I will give it a shot tomorrow.
ihaveashihtzu is offline   Reply With Quote
Old 09-11-2020, 07:05 PM   #4 (permalink)
A True Z Fanatic
 
Tractionless's Avatar
 
Join Date: Jan 2016
Location: Atlantic SE
Posts: 1,237
Drives: '10 K23 ST 7AT
Rep Power: 30525
Tractionless has a reputation beyond reputeTractionless has a reputation beyond reputeTractionless has a reputation beyond reputeTractionless has a reputation beyond reputeTractionless has a reputation beyond reputeTractionless has a reputation beyond reputeTractionless has a reputation beyond reputeTractionless has a reputation beyond reputeTractionless has a reputation beyond reputeTractionless has a reputation beyond reputeTractionless has a reputation beyond repute
Default

Update?
Rusty and BettyZ like this.
__________________
Toys Not Tots
Tractionless is offline   Reply With Quote
Old 09-15-2020, 12:47 PM   #5 (permalink)
Base Member
 
MrJdmNismo's Avatar
 
Join Date: Jan 2011
Location: Kissimmee/Orlando
Posts: 115
Drives: 2011 NISMO 370z
Rep Power: 3369
MrJdmNismo has a reputation beyond reputeMrJdmNismo has a reputation beyond reputeMrJdmNismo has a reputation beyond reputeMrJdmNismo has a reputation beyond reputeMrJdmNismo has a reputation beyond reputeMrJdmNismo has a reputation beyond reputeMrJdmNismo has a reputation beyond reputeMrJdmNismo has a reputation beyond reputeMrJdmNismo has a reputation beyond reputeMrJdmNismo has a reputation beyond reputeMrJdmNismo has a reputation beyond repute
Default

you need to push that in more if not you are going to have issues bolting up the diff to the sub frame and you will end up stripping the differential bolts...
Rusty likes this.
__________________
YouTube=MrJdm350z
2011 #0093 NISMO 370z:OWN
2007 350z:SOLD
MrJdmNismo is offline   Reply With Quote
Old 09-15-2020, 03:11 PM   #6 (permalink)
Ronin Samurai - Assassin
 
Rusty's Avatar
 
Join Date: Dec 2011
Location: Fayettenam,Pennsyltucky
Age: 68
Posts: 34,812
Drives: 2011 Nismo GM 6M
Rep Power: 2684436
Rusty has a reputation beyond reputeRusty has a reputation beyond reputeRusty has a reputation beyond reputeRusty has a reputation beyond reputeRusty has a reputation beyond reputeRusty has a reputation beyond reputeRusty has a reputation beyond reputeRusty has a reputation beyond reputeRusty has a reputation beyond reputeRusty has a reputation beyond reputeRusty has a reputation beyond repute
Talking

Quote:
Originally Posted by MrJdmNismo View Post
you need to push that in more if not you are going to have issues bolting up the diff to the sub frame and you will end up stripping the differential bolts...
Sounds like you have done this. I came close.
__________________

浪人 - 殺し屋
"The Difficult Anytime, The Impossible By Appointment Only"
http://www.the370z.com/members-370z-...o-journal.html
Rusty is offline   Reply With Quote
Old 10-28-2020, 10:26 PM   #7 (permalink)
Base Member
 
dat570zx's Avatar
 
Join Date: Dec 2018
Location: Honolulu, HI
Posts: 5
Drives: 15 Nissan 370Z PR A7
Rep Power: 6
dat570zx is on a distinguished road
Default

[/QUOTE]
I guess my question is.. is the bushing, as it sits now, good enough for use? I was going to take it to one last shop when they're opened and if they can't do it I was going to have to remove it and I'll just go poly.


EDIT: Did a parts search and it shows the same part # for the subframe on both the nismo and nonnismos .
Thanks all[/QUOTE]

I installed the NISMO solid differential bushings and I got it about the same as you (maybe an 1/8th inch away from the front being flush with the subframe)!? I bolted the differential up and torqued it down. Went back after about a week and rechecked the torque, it hadn’t budged!! It’s been 6 months now and it’s been fine!
Tractionless likes this.
dat570zx is offline   Reply With Quote
Reply

Bookmarks

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On


Similar Threads
Thread Thread Starter Forum Replies Last Post
Rear Differential Bushing Leak BossJ Engine & Drivetrain 34 05-14-2020 02:40 PM
Rear differential bushing failure Big J Brakes & Suspension 60 02-25-2018 04:57 PM
[FOR SALE] Z1 Rear Differential Bushing Removal Tool Kzonts Parts for sale (Private Classifieds) 5 10-18-2017 04:46 AM
[WTB] Rear Differential Bushing Removal Tool Z Runner Parts for sale (Private Classifieds) 5 08-03-2017 10:00 AM
Rear subframe Bushing recommendation 2012 Nismo Brakes & Suspension 15 05-05-2017 08:16 PM


All times are GMT -5. The time now is 04:07 AM.


Powered by vBulletin® Version 3.8.4
Copyright ©2000 - 2024, Jelsoft Enterprises Ltd.
Search Engine Optimization by vBSEO 3.6.0 PL2