Z1 Subframe Collars: Snake Oil or Viable Shortcut?

RanRich · 10-11-2017, 04:21 PM

Came across these the other day while looking at differential bushings:

https://www.z1motorsports.com/transm...r-p-12015.html

The principle is simple enough. Rather than drilling out old bushings to fit poly/solid bushings, fill the gaps in the original rubber pieces to prevent less movement and offer more feedback. At first blush its deceptively obvious - if this solution actually works, why didn't anyone develop it before?

sirnixalot · 10-11-2017, 04:38 PM

They aren't snake oil and they aren't the first people to do collars for rear sub-frames.

Their design though does fill in the inner voids down in the bushing where it can, haven't seen collars like that before.

Viable short cut for sure.

MaysEffect · 10-11-2017, 10:26 PM

Agreed, not snake oil at all. However for our chassis it is not needed as much compared to cars that have modular 2 piece subframes like on VW's and Honda's (s2k, vw golf most notably).

With this, it's more of a bushing insert for reducing drive train slop, this doesn't work in the same fashion as bolt isolators to reduce excessive alignment changes. which increases steering and suspension slop.

In this case this is not a serious upgrade.

sirnixalot · 10-12-2017, 01:21 AM

Quote:

Originally Posted by MaysEffect

Agreed, not snake oil at all. However for our chassis it is not needed as much compared to cars that have modular 2 piece subframes like on VW's and Honda's (s2k, vw golf most notably).

With this, it's more of a bushing insert for reducing drive train slop, this doesn't work in the same fashion as bolt isolators to reduce excessive alignment changes. which increases steering and suspension slop.

In this case this is not a serious upgrade.

Disagree. Even the video shows why its a legitimate upgrade.....

MaysEffect · 10-13-2017, 12:56 PM

I didn't say it wasn't legitimate, i said not as serious as for some other cars.

Senna-F1 · 10-13-2017, 01:11 PM

I've already ordered mine, but I'll be doing a number of things at the same time. Their Diff bushing, transmission bushing, and doing the clicking axle fix.

Zat_Zuma · 10-13-2017, 05:01 PM

Keeping my one little good eye on the product reviews.
Seems like a viable easy low cost upgrade to solidify the suspension.
Don't know how well it will do for racing or drifting.
Everyday handling mode... maybe

I've got the Diff bushings, Engine mounts and trans mounts done with a notable difference in how more solid acceleration is and with much more vibrations in the interior.

NeverBoneStck · 10-14-2017, 02:39 AM

Quote:

Originally Posted by Senna-F1

I've already ordered mine, but I'll be doing a number of things at the same time. Their Diff bushing, transmission bushing, and doing the clicking axle fix.

How do u fix a clicking axle.

Senna-F1 · 10-14-2017, 08:56 AM

Quote:

Originally Posted by NeverBoneStck

How do u fix a clicking axle.

FIXED: Rear axle click clunk noise

Sent from my iPhone using Tapatalk

RanRich · 10-17-2017, 10:44 PM

Quote:

Originally Posted by Senna-F1

I've already ordered mine, but I'll be doing a number of things at the same time. Their Diff bushing, transmission bushing, and doing the clicking axle fix.

Definitely report back on before/after and first impressions of all these mods. Have had my eyes on these mods for a while.

Not_Z_but_G · 02-12-2018, 11:48 PM

Bump any updates?

JLarson · 02-13-2018, 02:26 PM

Installed these a few weeks ago. I like them as a mod, but as far as offering a truly dramatic difference, I haven't noticed that. I'm a little more stable with a little less wheel hop, and that's a good thing. I also haven't really been able to test the limits thanks to cold/wet conditions in eastern PA lately. This was a pretty easy mod to do, and fairly cheap.

AlWakRa · 02-13-2018, 02:57 PM

I have installed them very recently, however, I am not sure how exactly it affected the car as the whole car feels stiffer with less flex (changed the bushes to poly + solid diff bushes + Z1 collars).

HapaZ · 02-15-2018, 12:10 PM

I just added a review of these here...
Z1 Subframe Bushing Insert/Collar Review
Hope this helps!

Tractionless · 04-04-2018, 12:37 PM

Installed mine this week but can't give a unbiased opinion as I also installed 11" wheels wrapped in 325 rubber which I only drove on for 5 miles before tossing the collars in.

10-11-2017, 04:21 PM	#1 (permalink)
RanRich Enthusiast Member Join Date: Mar 2015 Location: St. Louis Posts: 425 Drives: 09 PG Sport M6 Rep Power: 3372	Z1 Subframe Collars: Snake Oil or Viable Shortcut? Came across these the other day while looking at differential bushings: https://www.z1motorsports.com/transm...r-p-12015.html The principle is simple enough. Rather than drilling out old bushings to fit poly/solid bushings, fill the gaps in the original rubber pieces to prevent less movement and offer more feedback. At first blush its deceptively obvious - if this solution actually works, why didn't anyone develop it before? DarkJak and DragonSlave02 like this. __________________ AAM \| Dynosty \| Ecutek \| Eibach \| Hawk \| H&R \| Nismo \| Stillen \| Stoptech \| Z1

10-11-2017, 04:38 PM	#2 (permalink)
sirnixalot Track Member Join Date: May 2017 Location: Cayman Islands Posts: 685 Drives: 2010 370Z Rep Power: 57453	They aren't snake oil and they aren't the first people to do collars for rear sub-frames. Their design though does fill in the inner voids down in the bushing where it can, haven't seen collars like that before. Viable short cut for sure. wideglideleon likes this. __________________ 2010 Sport - LS3 swap loading 2012 Frontier - BTWTuning VK56DE swap

10-13-2017, 01:11 PM	#6 (permalink)
Senna-F1 Enthusiast Member Join Date: Jun 2016 Location: Cary, NC Age: 53 Posts: 425 Drives: 370SC,EliseSC,MR2T Rep Power: 49	I've already ordered mine, but I'll be doing a number of things at the same time. Their Diff bushing, transmission bushing, and doing the clicking axle fix. Zat_Zuma, DarkJak, RanRich and 1 others like this.

10-13-2017, 05:01 PM	#7 (permalink)
Zat_Zuma A True Z Fanatic Join Date: Nov 2008 Location: Edmonton, Alberta ...eh Posts: 1,171 Drives: 2017 Touring auto Rep Power: 18	Keeping my one little good eye on the product reviews. Seems like a viable easy low cost upgrade to solidify the suspension. Don't know how well it will do for racing or drifting. Everyday handling mode... maybe I've got the Diff bushings, Engine mounts and trans mounts done with a notable difference in how more solid acceleration is and with much more vibrations in the interior. __________________ [B]2009 & 2017 370Z Touring Sport Autos SOLD

02-12-2018, 11:48 PM	#11 (permalink)
Not_Z_but_G Enthusiast Member Join Date: Apr 2016 Location: Tacoma , WA Posts: 257 Drives: 08 g35s 6mt Rep Power: 8	Bump any updates? __________________ 2 door s200

10-11-2017, 10:26 PM	#3 (permalink)
MaysEffect Enthusiast Member Join Date: Aug 2016 Location: SoCal Age: 31 Posts: 383 Drives: Infiniti FX35 Rep Power: 35	Agreed, not snake oil at all. However for our chassis it is not needed as much compared to cars that have modular 2 piece subframes like on VW's and Honda's (s2k, vw golf most notably). With this, it's more of a bushing insert for reducing drive train slop, this doesn't work in the same fashion as bolt isolators to reduce excessive alignment changes. which increases steering and suspension slop. In this case this is not a serious upgrade.

10-13-2017, 12:56 PM	#5 (permalink)
MaysEffect Enthusiast Member Join Date: Aug 2016 Location: SoCal Age: 31 Posts: 383 Drives: Infiniti FX35 Rep Power: 35	I didn't say it wasn't legitimate, i said not as serious as for some other cars.

02-13-2018, 02:26 PM	#12 (permalink)
JLarson A True Z Fanatic Join Date: Jun 2017 Location: Media, PA Posts: 4,074 Drives: 14 Nissan 370z MR M6 Rep Power: 2684369	Installed these a few weeks ago. I like them as a mod, but as far as offering a truly dramatic difference, I haven't noticed that. I'm a little more stable with a little less wheel hop, and that's a good thing. I also haven't really been able to test the limits thanks to cold/wet conditions in eastern PA lately. This was a pretty easy mod to do, and fairly cheap. __________________ 2014 370z Touring Sport Magma Red MT // BP Single Turbo 6467 // 63mm TB's // Z1 Ported Upper Mani // RJM Pedal // Zspeed Stage 3 Clutch // 526 WHP, 451 WTQ 2006 350z (Sold) // 1990 300zx (Sold) // 1985 300zx 2+2 (Sold)

02-13-2018, 02:57 PM	#13 (permalink)
AlWakRa Track Member Join Date: Oct 2010 Location: Qatar Posts: 600 Drives: 10 370Z PW 6MT Rep Power: 13449	I have installed them very recently, however, I am not sure how exactly it affected the car as the whole car feels stiffer with less flex (changed the bushes to poly + solid diff bushes + Z1 collars). __________________ 2010 370Z Touring Sport Pearl White 6MT Powered by: Fast Intentions - Motordyne - Stillen - OS Giken - CJ Motorsports - Mishimoto - MCA Suspension - SPL - SuperPRO - RJM - Z1 Motorsport - Zspeed - Volk My Humble Journals

02-15-2018, 12:10 PM	#14 (permalink)
HapaZ Base Member Join Date: Sep 2014 Location: NorCal Posts: 242 Drives: 2012 370z Base Coupe Rep Power: 10	I just added a review of these here... Z1 Subframe Bushing Insert/Collar Review Hope this helps! Kzonts likes this.

04-04-2018, 12:37 PM	#15 (permalink)
Tractionless A True Z Fanatic Join Date: Jan 2016 Location: Atlantic SE Posts: 1,237 Drives: '10 K23 ST 7AT Rep Power: 30525	Installed mine this week but can't give a unbiased opinion as I also installed 11" wheels wrapped in 325 rubber which I only drove on for 5 miles before tossing the collars in. __________________ Toys Not Tots Last edited by Tractionless; 04-04-2018 at 12:39 PM.

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