Differential Shims?

2011 Nismo#91 · 04-22-2016, 09:53 AM

So I searched and I only found a DIY for a 350z differential upgrade. Ours are the same but they never mentioned the use of any shims at all. I want to make sure I have everything I need for the upgrade to a Quaife (QDF13L) from the VLSD, right now I believe have everything but shims. Are these needed, nice to have, or not useful for the install?

I did go through the entire Diff thread and shims were only mentioned once and that just said "call Z1 and find out". Which I did and the guy I was talking too must not have understood what I was asking for because he only sent me the side bearing and seal kit when I wanted the full kit that also replaced the pinion gear bearings. So I ordered the left out parts listed in the diff thread but I am worried I may need shims still.

https://www.z1motorsports.com/powert...-4_40_151.html

B&W_Evader · 04-22-2016, 10:07 AM

I'm waiting on OSG LSD and have been researching this like you. The general consesus seems to be that you wait on shims until you measure the backlash. Most people seem to end up not needing them.

Best DIY i've found so far.
OS Giken Super-lock LSD Installation - MY350Z.COM Forums

I like this one too.
*****************************************/ID/2966/PageID/5912/Project-370Z-Improving-Grip-by-Tuning-a-Cusco-RS-LSD.aspx

And don't forget this one:
DIY: Whiteline rear differential bushings

Felix 808 · 05-01-2016, 02:46 PM

Are you installing this yourself? If so you are going to need the proper tools to do the job (dial indicator, mag base, torque wrench, marking compound, ect). If not, your installer should have shims & yes they will be needed. Once in a while the stars will align & they will set up the same, but this is rare at best.

$.02 YMMV

greasebeast · 05-05-2016, 02:23 AM

best to have a pro do it, you won't know if you need shims until you crack it open and attempt the install

you'll get a huge price break if you drop the pumpkin yourself and bring it into whichever shop you're using. i think i paid $250 for a quaife installation by dropping the diff myself and bringing in the parts

04-22-2016, 09:53 AM	#1 (permalink)
2011 Nismo#91 A True Z Fanatic Join Date: Mar 2011 Location: NJ Posts: 2,402 Drives: slowly Rep Power: 40569	Differential Shims? So I searched and I only found a DIY for a 350z differential upgrade. Ours are the same but they never mentioned the use of any shims at all. I want to make sure I have everything I need for the upgrade to a Quaife (QDF13L) from the VLSD, right now I believe have everything but shims. Are these needed, nice to have, or not useful for the install? I did go through the entire Diff thread and shims were only mentioned once and that just said "call Z1 and find out". Which I did and the guy I was talking too must not have understood what I was asking for because he only sent me the side bearing and seal kit when I wanted the full kit that also replaced the pinion gear bearings. So I ordered the left out parts listed in the diff thread but I am worried I may need shims still. https://www.z1motorsports.com/powert...-4_40_151.html

04-22-2016, 10:07 AM	#2 (permalink)
B&W_Evader Track Member Join Date: Aug 2011 Location: CA Posts: 972 Drives: slower than before Rep Power: 387	I'm waiting on OSG LSD and have been researching this like you. The general consesus seems to be that you wait on shims until you measure the backlash. Most people seem to end up not needing them. Best DIY i've found so far. OS Giken Super-lock LSD Installation - MY350Z.COM Forums I like this one too. ****************************************/ID/2966/PageID/5912/Project-370Z-Improving-Grip-by-Tuning-a-Cusco-RS-LSD.aspx And don't forget this one: DIY: Whiteline rear differential bushings 2011 Nismo#91 likes this. __________________ \|RIP\|6spd-sport\|OSG-LSD\|XP8\|RBF600\|Eibach Sways\|RE-71R\|FI-34Row\|Gen3-CAI\|Yaw P.S.\| Last edited by B&W_Evader; 04-22-2016 at 10:10 AM.*

05-01-2016, 02:46 PM	#3 (permalink)
Felix 808 A True Z Fanatic Join Date: Oct 2011 Location: Camarillo, CA Posts: 1,063 Drives: 2011 PW/Grey T/S 7AT Rep Power: 2807	Are you installing this yourself? If so you are going to need the proper tools to do the job (dial indicator, mag base, torque wrench, marking compound, ect). If not, your installer should have shims & yes they will be needed. Once in a while the stars will align & they will set up the same, but this is rare at best. $.02 YMMV 2011 Nismo#91 likes this. __________________ Semper Fi Μολὼν λαβέ

05-05-2016, 02:23 AM	#4 (permalink)
greasebeast Base Member Join Date: Apr 2015 Location: bay area Posts: 14 Drives: 2010 370z Rep Power: 10	best to have a pro do it, you won't know if you need shims until you crack it open and attempt the install you'll get a huge price break if you drop the pumpkin yourself and bring it into whichever shop you're using. i think i paid $250 for a quaife installation by dropping the diff myself and bringing in the parts 2011 Nismo#91 likes this.

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
[FOR SALE] OEM Radiator, Titanium shims, Rear Brake Pads	lilswi	Parts for sale (Private Classifieds)	1	07-29-2015 03:45 PM
[WTB] Akebono shims and hardware	Staggered357	Parts for sale (Private Classifieds)	0	11-06-2013 03:57 PM
Help! Need the differential bearing size/measure for an aftermaket differential	tkramwinkel	Engine & Drivetrain	1	10-02-2012 05:49 AM
Who wants Titanium pad shims the the AP Racing brakes?	ChrisSlicks	Brakes & Suspension	23	08-15-2012 12:40 PM
Stock brake pad shims, reversed...nuts	spearfish25	Brakes & Suspension	5	05-01-2011 06:47 PM