Open Diff To Quaife - How Many Shims and What Sizes?

geeteezee · 06-21-2021, 01:21 PM

Is this something I can order beforehand to fill the need, or will I not know until reassembly? Having a shop do the work, but want to cover the bases. I have the diff, new seals and bearings.
Only one size listed at conceptz, z1 has several.

Hotrodz · 06-21-2021, 01:24 PM

Quote:

Originally Posted by geeteezee

Is this something I can order beforehand to fill the need, or will I not know until reassembly? Having a shop do the work, but want to cover the bases. I have the diff, new seals and bearings.
Only one size listed at conceptz, z1 has several.

You will not need any shims with a Quaife.

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geeteezee · 06-21-2021, 02:20 PM

It will fit with the existing shims?

Hotrodz · 06-21-2021, 02:45 PM

Yes sir.

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geeteezee · 06-21-2021, 07:09 PM

Can you elaborate on why it won't need shimmed? Not doubting your mad skills but...is the tolerance on Quaife of epic proportions or is there some other reason it will be centered perfectly? Obviously I'm somewhat ignorant to the ins and outs of differentials. Appreciate your time!

Hotrodz · 06-21-2021, 07:51 PM

No worries! Most the aftermarket diffs come totally ready to install and are plug and play. Especially the helical diff like Quaife and Wavetrac. In rare cases you may need to adjust the lash. Even the OSG I got needed no additional shims. I believe Cusco gives you and option of gear setup and shims. I know in clutch type they can be customized for power and traction but it really doesn't require any additional shims.

I am sure Rusty and others can elaborate on the particulars but you should be good to go.

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Rusty · 06-21-2021, 10:36 PM

In my OS Giken. I reused the old shims. I got almost the same back lash. I did a Wave Trac for someone else and reused the same shims. In a rare occasion, you might need different shims. When you take it apart. Mike the thickness of the shims and mark which position they came from. If they are a different thickness, and you can't get the backlash close. You can swap the shims around.

Optimiser · 06-22-2021, 12:41 AM

Quote:

Originally Posted by Hotrodz

No worries! Most the aftermarket diffs come totally ready to install and are plug and play. Especially the helical diff like Quaife and Wavetrac. In rare cases you may need to adjust the lash. Even the OSG I got needed no additional shims. I believe Cusco gives you and option of gear setup and shims. I know in clutch type they can be customized for power and traction but it really doesn't require any additional shims.

I am sure Rusty and others can elaborate on the particulars but you should be good to go.

Sent from my SM-G965U using Tapatalk

True! My CUSCO required shimming on installation.

geeteezee · 06-22-2021, 06:56 AM

Quote:

Originally Posted by Hotrodz

No worries! Most the aftermarket diffs come totally ready to install and are plug and play. Especially the helical diff like Quaife and Wavetrac. In rare cases you may need to adjust the lash. Even the OSG I got needed no additional shims. I believe Cusco gives you and option of gear setup and shims. I know in clutch type they can be customized for power and traction but it really doesn't require any additional shims.

I am sure Rusty and others can elaborate on the particulars but you should be good to go.

Sent from my SM-G965U using Tapatalk

Excellent, thanks for the explanation!

geeteezee · 06-29-2021, 03:39 PM

It needs shims...

Rusty · 06-29-2021, 03:45 PM

Quote:

Originally Posted by geeteezee

It needs shims...

How far off? What was the backlash with the oem shims?

geeteezee · 06-29-2021, 03:47 PM

No idea, shop called today to say they needed them. Ordered a variety from Z1.

06-21-2021, 01:21 PM	#1 (permalink)
geeteezee Base Member Join Date: Jun 2019 Location: Ontario Posts: 191 Drives: 19 370z Heritage EAC Rep Power: 3360	Open Diff To Quaife - How Many Shims and What Sizes? Is this something I can order beforehand to fill the need, or will I not know until reassembly? Having a shop do the work, but want to cover the bases. I have the diff, new seals and bearings. Only one size listed at conceptz, z1 has several. __________________

06-21-2021, 02:20 PM	#3 (permalink)
geeteezee Base Member Join Date: Jun 2019 Location: Ontario Posts: 191 Drives: 19 370z Heritage EAC Rep Power: 3360	It will fit with the existing shims? __________________

06-21-2021, 02:45 PM	#4 (permalink)
Hotrodz Premium Member Join Date: Aug 2012 Location: NW, AZ Posts: 9,330 Drives: 10 Nissan 370z Nismo Rep Power: 2684384	Yes sir. Sent from my SM-G965U using Tapatalk jchammond likes this. __________________ *Fast Intentions TT Installed and Tuned by Seb at SpecialtyZ 610whp 560tq:\|Fast Intentions 3" TT-TDX*\|SpecialtyZ/Fast Intentions 72 Row Oil Cooler\|SZ 6 Puck Clutch & Flywheel\|3GsCustoms\|Z1\|Wavetrac\|Hotchkis\|Whiteline \|Blitz\|Fortune Auto 500\|Fujimura\|SPL\|H&R\|TK\|TWM\|RPM Rollbar\|Sparco\|Next Level Performance\|TrackSpec\|AeroFlow Dynamics\|Pioneer\|

06-21-2021, 07:09 PM	#5 (permalink)
geeteezee Base Member Join Date: Jun 2019 Location: Ontario Posts: 191 Drives: 19 370z Heritage EAC Rep Power: 3360	Can you elaborate on why it won't need shimmed? Not doubting your mad skills but...is the tolerance on Quaife of epic proportions or is there some other reason it will be centered perfectly? Obviously I'm somewhat ignorant to the ins and outs of differentials. Appreciate your time! __________________

06-21-2021, 07:51 PM	#6 (permalink)
Hotrodz Premium Member Join Date: Aug 2012 Location: NW, AZ Posts: 9,330 Drives: 10 Nissan 370z Nismo Rep Power: 2684384	No worries! Most the aftermarket diffs come totally ready to install and are plug and play. Especially the helical diff like Quaife and Wavetrac. In rare cases you may need to adjust the lash. Even the OSG I got needed no additional shims. I believe Cusco gives you and option of gear setup and shims. I know in clutch type they can be customized for power and traction but it really doesn't require any additional shims. I am sure Rusty and others can elaborate on the particulars but you should be good to go. Sent from my SM-G965U using Tapatalk Rusty, Optimiser, jchammond and 1 others like this. __________________ *Fast Intentions TT Installed and Tuned by Seb at SpecialtyZ 610whp 560tq:\|Fast Intentions 3" TT-TDX*\|SpecialtyZ/Fast Intentions 72 Row Oil Cooler\|SZ 6 Puck Clutch & Flywheel\|3GsCustoms\|Z1\|Wavetrac\|Hotchkis\|Whiteline \|Blitz\|Fortune Auto 500\|Fujimura\|SPL\|H&R\|TK\|TWM\|RPM Rollbar\|Sparco\|Next Level Performance\|TrackSpec\|AeroFlow Dynamics\|Pioneer\|

06-21-2021, 10:36 PM	#7 (permalink)
Rusty Ronin Samurai - Assassin Join Date: Dec 2011 Location: Fayettenam,Pennsyltucky Age: 68 Posts: 34,851 Drives: 2011 Nismo GM 6M Rep Power: 2684436	In my OS Giken. I reused the old shims. I got almost the same back lash. I did a Wave Trac for someone else and reused the same shims. In a rare occasion, you might need different shims. When you take it apart. Mike the thickness of the shims and mark which position they came from. If they are a different thickness, and you can't get the backlash close. You can swap the shims around. Hotrodz, Optimiser and geeteezee like this. __________________ 浪人 - 殺し屋 "The Difficult Anytime, The Impossible By Appointment Only" http://www.the370z.com/members-370z-...o-journal.html

06-29-2021, 03:39 PM	#10 (permalink)
geeteezee Base Member Join Date: Jun 2019 Location: Ontario Posts: 191 Drives: 19 370z Heritage EAC Rep Power: 3360	It needs shims... __________________

06-29-2021, 03:47 PM	#12 (permalink)
geeteezee Base Member Join Date: Jun 2019 Location: Ontario Posts: 191 Drives: 19 370z Heritage EAC Rep Power: 3360	No idea, shop called today to say they needed them. Ordered a variety from Z1. Rusty likes this. __________________

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