Differential bushing

John@Z1 · 02-25-2013, 04:00 PM

Thanks for bringing it in Adam. We are pleased to see that you're enjoying the ride.

esfourteen · 02-25-2013, 04:22 PM

ordered one myself this morning along with the Z1 transmission mount (already have the motor mounts), need to keep all this torque in check!

DIGItonium · 02-25-2013, 08:49 PM

Exactly... can't let the torque leak out haha. Any of you guys tightened the axles as well? Mine has bad clunking on the rear driver side, but I plan to get it done when it is time to order new tires.

BTW... any tools required to extract the old mount? Is there much disassembly involved? One of these days I'd like to get it all done at once.

MaDMaXX · 02-25-2013, 08:52 PM

Quote:

Originally Posted by DIGItonium

Exactly...

BTW... any tools required to extract the old mount? Is there much disassembly involved? One of these days I'd like to get it all done at once.

I'd imagine it's as much of a pain as the 350.

esfourteen · 02-26-2013, 08:46 AM

I removed the diff and subframe mounts on my 240 and the process is the same; kill it with fire and then chisel or cut the sleeve. it's not easy with the subframe in.

DIGItonium · 02-26-2013, 09:53 AM

Someone created an extraction tool. It looks almost like a hollow cylinder with a long screw and metal washers. I think it is used to squeeze it out. I don't know if we have room to extract it without having to take a bunch of stuff apart.

esfourteen · 02-26-2013, 10:22 AM

Quote:

Originally Posted by DIGItonium

Someone created an extraction tool. It looks almost like a hollow cylinder with a long screw and metal washers. I think it is used to squeeze it out. I don't know if we have room to extract it without having to take a bunch of stuff apart.

yep I saw that but I believe its for the 350 and its slightly different size so I don't think that will work.

Zat_Zuma · 02-26-2013, 11:44 AM

Basically the subframe should be removed to have clearance to remove the rear diff bushing. There isn't enough clearance between the frame, rear differential and body to get a proper tool to remove the bushing. Fire and heat may work to remove the bushing but then it's the problem of getting one back in.

Whiteline bushing is a plastic type bushing with a compression fitting.

That is for a 350Z and the 370Z bushing is slightly smaller, so a little grinding may be required for it to fit. The front bushings are a direct fit.

The kit I liked for the front is this:

They haven't developed a rear bushing for the 370Z yet (or since the last time I checked) and the one for the 350Z didn't impress me. I left the OEM bushing in place and just replaced the front bushings on the differential. The rear bushing is still in good shape and some stiffing is better than none. The front diff bushings are really soft and seem to have a lot of movement.

We shall see how this setup works when the car is back on the road, this spring.

The ulimate solid, increased VHM bushing for the rear differential are SPL solid metal bushings with no movement. I just wasn't ready for that level yet.

TVPostSound · 03-02-2013, 04:48 PM

Quote:

Originally Posted by nismonster

Hey guys, just throwing in my 2c -- I went to Z1 for them to fix an exhaust leak and they found my oem bushing was busted. Fluid everywhere. They replaced the busted bushings with the whiteline bushings for the 350z and I couldn't be happier. I would never want to replace a busted OEM bushing with another OEM bushing -- it would just fail again!

I never have tracked my car, but I do DD it and drive it hard pretty much every day. Just took a quick drive after the install and the rear end feels much more solid -- especially on hard 1-2 shifts.

I noticed earlier in the thread someone said the 350z bushing do not fit 370z. Not sure if this is true, but if you have an experienced, reputable shop such as Z1, the bushings can easily be made to fit. I wish I took a picture of the busted OEM, but you can easily see the whiteline are much better quality.

I just received confirmation from John at Z1, that the Whitelines work, and there were no modifications done during install.

.

esfourteen · 03-04-2013, 03:13 PM

I had the diff bushings installed, they took a small amount of material off the larger rear bushing for it to fit. With the new diff bushings and the Z1 motor and transmissions mounts the shifting in this car is infinitely better. Theres virtually no wheel hop, and driveline slop is completely gone. 1st to 2nd shifts are the most improved, but overall shifts are much more precise. The only downside is that theres a bit of vibration felt in the cabin now, nothing rattles (yet) but its enough vibration that it would bother some people.

vqloven · 03-05-2013, 08:33 PM

Quote:

Originally Posted by TVPostSound

I just received confirmation from John at Z1, that the Whitelines work, and there were no modifications done during install.

.

Just to make sure, it's this set, correct?
Whiteline 350Z/G35 Front and Rear Diff Bushings

EDIT: Does the Energy set work? It's like half of the price...
http://www.z1motorsports.com/350_g35...oducts_id=5229

MaDMaXX · 03-05-2013, 09:28 PM

Not sure if the ES set would work, but i know it's harder and not as 'fancy' as the whiteline bushing.

esfourteen · 03-05-2013, 10:25 PM

Quote:

Originally Posted by vqloven

Just to make sure, it's this set, correct?
Whiteline 350Z/G35 Front and Rear Diff Bushings

EDIT: Does the Energy set work? It's like half of the price...
Energy Suspension Differential Bushing Set

get the whiteline, its hard enough to install that rear bushings without worrying about trying to save the stock sleeve to use with the ES

TVPostSound · 03-08-2013, 03:37 PM

Quote:

Originally Posted by vqloven

Just to make sure, it's this set, correct?
Whiteline 350Z/G35 Front and Rear Diff Bushings

EDIT: Does the Energy set work? It's like half of the price...
Energy Suspension Differential Bushing Set

Yup, thats the one, there are no others.

Ive heard stories if the ES bushings popping out.

vqloven · 03-08-2013, 04:21 PM

Cool, I went ahead and ordered the Whiteline bushing. I'll have my trusty mechanic install it for me in like 2 weeks.

02-25-2013, 04:00 PM	#91 (permalink)
John@Z1 The370Z.com Sponsor Join Date: Nov 2008 Location: GA Posts: 1,589 Drives: Turbos Rep Power: 20	Thanks for bringing it in Adam. We are pleased to see that you're enjoying the ride. nismonster likes this. __________________ Z1 Motorsports will beat any advertised price on Nissan OEM Parts! 770-838-7777 ext 311 AIM: JohnatZ1 email: John@Z1motorsports.com

02-25-2013, 04:22 PM	#92 (permalink)
esfourteen A True Z Fanatic Join Date: Mar 2010 Location: LI, NY Posts: 1,375 Drives: 40th TT Rep Power: 18	ordered one myself this morning along with the Z1 transmission mount (already have the motor mounts), need to keep all this torque in check! DIGItonium likes this. __________________ Build Thread \| GTM TT Install Thread \| Engine Build Thread

02-25-2013, 08:49 PM	#93 (permalink)
DIGItonium A True Z Fanatic Join Date: Jan 2009 Location: Kansas Posts: 3,800 Drives: 09 Z34-TT 6MT Rep Power: 42	Exactly... can't let the torque leak out haha. Any of you guys tightened the axles as well? Mine has bad clunking on the rear driver side, but I plan to get it done when it is time to order new tires. BTW... any tools required to extract the old mount? Is there much disassembly involved? One of these days I'd like to get it all done at once. __________________

02-26-2013, 08:46 AM	#95 (permalink)
esfourteen A True Z Fanatic Join Date: Mar 2010 Location: LI, NY Posts: 1,375 Drives: 40th TT Rep Power: 18	I removed the diff and subframe mounts on my 240 and the process is the same; kill it with fire and then chisel or cut the sleeve. it's not easy with the subframe in. __________________ Build Thread \| GTM TT Install Thread \| Engine Build Thread

02-26-2013, 09:53 AM	#96 (permalink)
DIGItonium A True Z Fanatic Join Date: Jan 2009 Location: Kansas Posts: 3,800 Drives: 09 Z34-TT 6MT Rep Power: 42	Someone created an extraction tool. It looks almost like a hollow cylinder with a long screw and metal washers. I think it is used to squeeze it out. I don't know if we have room to extract it without having to take a bunch of stuff apart. __________________

02-26-2013, 11:44 AM	#98 (permalink)
Zat_Zuma A True Z Fanatic Join Date: Nov 2008 Location: Edmonton, Alberta ...eh Posts: 1,171 Drives: 2017 Touring auto Rep Power: 19	Basically the subframe should be removed to have clearance to remove the rear diff bushing. There isn't enough clearance between the frame, rear differential and body to get a proper tool to remove the bushing. Fire and heat may work to remove the bushing but then it's the problem of getting one back in. Whiteline bushing is a plastic type bushing with a compression fitting. That is for a 350Z and the 370Z bushing is slightly smaller, so a little grinding may be required for it to fit. The front bushings are a direct fit. The kit I liked for the front is this: They haven't developed a rear bushing for the 370Z yet (or since the last time I checked) and the one for the 350Z didn't impress me. I left the OEM bushing in place and just replaced the front bushings on the differential. The rear bushing is still in good shape and some stiffing is better than none. The front diff bushings are really soft and seem to have a lot of movement. We shall see how this setup works when the car is back on the road, this spring. The ulimate solid, increased VHM bushing for the rear differential are SPL solid metal bushings with no movement. I just wasn't ready for that level yet. __________________ [B]2009 & 2017 370Z Touring Sport Autos SOLD

03-04-2013, 03:13 PM	#100 (permalink)
esfourteen A True Z Fanatic Join Date: Mar 2010 Location: LI, NY Posts: 1,375 Drives: 40th TT Rep Power: 18	I had the diff bushings installed, they took a small amount of material off the larger rear bushing for it to fit. With the new diff bushings and the Z1 motor and transmissions mounts the shifting in this car is infinitely better. Theres virtually no wheel hop, and driveline slop is completely gone. 1st to 2nd shifts are the most improved, but overall shifts are much more precise. The only downside is that theres a bit of vibration felt in the cabin now, nothing rattles (yet) but its enough vibration that it would bother some people. __________________ Build Thread \| GTM TT Install Thread \| Engine Build Thread Last edited by esfourteen; 03-04-2013 at 06:42 PM.

03-05-2013, 09:28 PM	#102 (permalink)
MaDMaXX Enthusiast Member Join Date: Jan 2012 Location: Oregon from England Posts: 292 Drives: 350z Rep Power: 13	Not sure if the ES set would work, but i know it's harder and not as 'fancy' as the whiteline bushing. __________________ '04.5 350Z - Very Motordyne.

03-08-2013, 04:21 PM	#105 (permalink)
vqloven Base Member Join Date: Jun 2012 Location: LA/UCSD Posts: 119 Drives: 11 G37S 6MT Rep Power: 13	Cool, I went ahead and ordered the Whiteline bushing. I'll have my trusty mechanic install it for me in like 2 weeks.

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