Does it matter if diff mount bushing is blown?

NissanParty · 06-07-2023, 06:35 PM

Why does Nissan continue to use the same diff mount bushing that explodes on every single car after a few years? Mine blew on my G37 and now on my 370z with 26k miles on it. Ridiculous.

Is there any harm if I just leave it as is?

Spooler · 06-07-2023, 07:09 PM

You need to get it fixed. It can cause wheel hop which is bad on parts.

NissanParty · 06-07-2023, 07:10 PM

Quote:

Originally Posted by Spooler

You need to get it fixed. It can cause wheel hop which is bad on parts.

Dang. I watched a few videos, looks like a pain but I can do it.

SkysG37 · 06-07-2023, 09:26 PM

Always thought Z's had a solid rubber bushing and the goo was only on the Infiniti chassis.
NVH vs performance, respectively.

Have read some people simply fill the stock bushing with a two part silicone or some such epoxy.
Fine for a daily that never gets driven hard, I suppose
I opted to swap in a whiteline bushing and brace.

But I see there are stiffer braces out on the market now.
Also seen the use of a pathfinder diff, that has two bushings for support. But that necessitates adding a second hole/sleeve and bushing to the rear subframe.

NissanParty · 06-07-2023, 09:39 PM

Quote:

Originally Posted by SkysG37

Always thought Z's had a solid rubber bushing and the goo was only on the Infiniti chassis.
NVH vs performance, respectively.

Have read some people simply fill the stock bushing with a two part silicone or some such epoxy.
Fine for a daily that never gets driven hard, I suppose
I opted to swap in a whiteline bushing and brace.

But I see there are stiffer braces out on the market now.
Also seen the use of a pathfinder diff, that has two bushings for support. But that necessitates adding a second hole/sleeve and bushing to the rear subframe.

I guess not because mine popped and all the juice came out!! Dang it!!!

BoilardZ · 06-09-2023, 01:48 AM

I replaced mine last year, at about 40K miles.
It was a pretty straightforward job, but it took a lot of patience and force to get that old bushing out. I used the removal tool from Z1 motorsports; it worked quite well. There are some good how-to videos on YouTube.
It's critical to replace a blown bushing. My car was really hopping around after the original blew. Bad design. The new, solid bushing from White Line is a huge improvement.

NissanParty · 06-09-2023, 02:14 AM

Quote:

Originally Posted by BoilardZ

I replaced mine last year, at about 40K miles.
It was a pretty straightforward job, but it took a lot of patience and force to get that old bushing out. I used the removal tool from Z1 motorsports; it worked quite well. There are some good how-to videos on YouTube.
It's critical to replace a blown bushing. My car was really hopping around after the original blew. Bad design. The new, solid bushing from White Line is a huge improvement.

Thanks, my main concern was removing the old bushing. I saw people using a sawzall or other things to get it out. I'll look at Z1 and watch some videos. I'll also see how much a shop will charge, I wish I had a lift!

NissanParty · 06-09-2023, 03:41 AM

Dang that dang tool is $140!!!!!!

Does anyone have a used one for sale?

loon · 06-09-2023, 08:55 AM

Forget where but I saw one on here somewhere the other day

Sent from my iPhone using Tapatalk

ZStalker505 · 06-09-2023, 12:05 PM

https://www.youtube.com/watch?v=fXYdemPSu2s

This is what I did and added the Z1 diff brace, got it when it was on sale.

https://www.z1motorsports.com/z1-pro...52659cfa874f05

Rusty · 06-09-2023, 01:15 PM

Quote:

Originally Posted by NissanParty

Dang that dang tool is $140!!!!!!

Does anyone have a used one for sale?

The Z1 bushing removal tool is a piece of junk. I can remove the bushing faster with a deep 2" hole cutter, and a sawzall. I've done 3 bushings so far. The SPL solid bushing is easier to install than the poly bushings. The hole where the bushing fits, is not round. It's egg shaped. It started out round. But during the welding process, it gets distorted. The oem bushing has to 2 separate chambers that is filled with the black silicone goop. Only one ruptures. When you go to remove the old oem bushing. The other chamber ruptures and causing a mess.

If any one wants me to walk you through the process. Let me know.

06-07-2023, 06:35 PM	#1 (permalink)
NissanParty Base Member Join Date: Feb 2022 Location: Southern California Posts: 112 Drives: 370z Nismo Rep Power: 32	Does it matter if diff mount bushing is blown? Why does Nissan continue to use the same diff mount bushing that explodes on every single car after a few years? Mine blew on my G37 and now on my 370z with 26k miles on it. Ridiculous. Is there any harm if I just leave it as is?

06-09-2023, 08:55 AM	#9 (permalink)
loon Base Member Join Date: Jan 2023 Location: FL Posts: 31 Drives: 2014 z34 Bl M6 Rep Power: 547	Forget where but I saw one on here somewhere the other day Sent from my iPhone using Tapatalk __________________ Black 2014 370z Sport Touring MT \| FortuneAuto 500s \| 25mm Rears 20mm Fronts \| Invidia Gemini Exhaust

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06-07-2023, 07:09 PM	#2 (permalink)
Spooler A True Z Fanatic Join Date: Jun 2014 Location: Ga Posts: 13,834 Drives: 2013 Nismo 370z Rep Power: 2684392	You need to get it fixed. It can cause wheel hop which is bad on parts.

06-07-2023, 09:26 PM	#4 (permalink)
SkysG37 Base Member Join Date: Jun 2019 Location: Fort Myers Florida Posts: 27 Drives: SC '08 G37 coupe Rep Power: 6	Always thought Z's had a solid rubber bushing and the goo was only on the Infiniti chassis. NVH vs performance, respectively. Have read some people simply fill the stock bushing with a two part silicone or some such epoxy. Fine for a daily that never gets driven hard, I suppose I opted to swap in a whiteline bushing and brace. But I see there are stiffer braces out on the market now. Also seen the use of a pathfinder diff, that has two bushings for support. But that necessitates adding a second hole/sleeve and bushing to the rear subframe.

06-09-2023, 01:48 AM	#6 (permalink)
BoilardZ Base Member Join Date: Apr 2017 Location: Sacramento, CA Posts: 88 Drives: 2017 370Z Rep Power: 8	I replaced mine last year, at about 40K miles. It was a pretty straightforward job, but it took a lot of patience and force to get that old bushing out. I used the removal tool from Z1 motorsports; it worked quite well. There are some good how-to videos on YouTube. It's critical to replace a blown bushing. My car was really hopping around after the original blew. Bad design. The new, solid bushing from White Line is a huge improvement.

06-09-2023, 03:41 AM	#8 (permalink)
NissanParty Base Member Join Date: Feb 2022 Location: Southern California Posts: 112 Drives: 370z Nismo Rep Power: 32	Dang that dang tool is $140!!!!!! Does anyone have a used one for sale?

06-09-2023, 12:05 PM	#10 (permalink)
ZStalker505 Base Member Join Date: Jan 2023 Location: NM Posts: 185 Drives: 14 SC Nismo Rep Power: 2	https://www.youtube.com/watch?v=fXYdemPSu2s This is what I did and added the Z1 diff brace, got it when it was on sale. https://www.z1motorsports.com/z1-pro...52659cfa874f05