The Definitive Differential Thread

Imperial · 05-04-2015, 02:28 AM

What is its part number?

Sent from my iPhone using Tapatalk

SurfDog · 05-04-2015, 04:30 AM

The guys at Z1 sent all I needed EXCEPT Spacers. When you install you'll need a variety of spacers to try in order to get your lash just right. I used trial and error. your stock spacers MIGHT work if you are lucky, but you probably need to try in a few different sizes. This is the main reason this is not really a DIY mod. Have an experienced shop do it (like ship your pumpkin to Z1 perhaps)

Heres a link to my diff building page to better explain the install. (I used a Quaife)

Surfdog's 09 journal

good luck

hjo1078 · 11-15-2015, 04:05 PM

id like to recommend the wavetrac lsd for those looking for good performance with everyday driveability. I had a Kaaz lsd prior to the wavetrac. No more clunks at slow speeds! Difference is night and day, it operates so quietly and still will put that power down. The maintenance on them is basically install and forget. Fluid changes after 20k plus. For those with the vlsd, all you need to get is an extra axle flange. Makes my car so much more enjoyable. I think the kaaz lsd is just too agressive for street driving, the pops and clunks at slow speeds made my car sound like it was broken. And not to mention the constant fluid changes with every oil change. With that said though, the kaaz i think put that power down a little better than the wavetrac. But i'll sacrifice a little performance for driveability.
Wavetrac® Differential - A torque biasing differential with a difference for more info

And i got a great deal from vividracing on this.

Hotrodz · 11-15-2015, 09:08 PM

This will be my next performance upgrade...thanks for sharing!

hjo1078 · 11-15-2015, 10:35 PM

Hotrodz i have seriously been nothing but smiles since getting this wavetrac. My car drives like an oem car now. It is incredibly smooth. I would let u test drive my car if u werent in the west coast. Lol

Sent from my iPhone using Tapatalk

Hotrodz · 11-15-2015, 10:49 PM

Lol, I would take you up on that for sure!

Sent from my SM-N910P using Tapatalk

dP3NGU1N · 01-05-2016, 10:06 PM

What do you want your car to do if you don't track that an LSD will help you accomplish? Are you getting mods to get mods? If you're treating mods like pokemon and you just gotta have em all then by all means. But otherwise you wouldn't know it's there.

Same with final gear swap. If you hate gas mileage then go for it.

jchammond · 01-14-2016, 10:05 PM

Good Thread;
11' open diff A/T,,,want to keep stock gear ratio-i just want both wheels to even power for drag/drift etc...
Quaife,OS Giken,etc...?
all opinion's are welcome-no roadcourse;mostly straight line & want it to be locked like a spool out of the hole.
But'''' only under hard acceleration (trying not to completely throw fuel milage out the window)
i know Quaife is helical gears & Giken uses conventional clutch packs...
all input welcome.
Ty

osbornsm · 01-22-2016, 11:06 AM

Quote:

Originally Posted by jchammond

Good Thread;
11' open diff A/T,,,want to keep stock gear ratio-i just want both wheels to even power for drag/drift etc...
Quaife,OS Giken,etc...?
all opinion's are welcome-no roadcourse;mostly straight line & want it to be locked like a spool out of the hole.
But'''' only under hard acceleration (trying not to completely throw fuel milage out the window)
i know Quaife is helical gears & Giken uses conventional clutch packs...
all input welcome.
Ty

Note: Quaife also adds easily to the Stock open diff.

Hotrodz · 01-22-2016, 12:08 PM

I have no experience with Quaife but I love my Wavetech and it is just like Quaife but better because it does lock when the wheel is free. The price, installation and maintenance are the same. I am pretty amazed at how difference in acceleration there is and on uneven surfaces you don't get the surprise step out because one wheel left the ground for .05 of a second. It definitely has increased my confidence under hard acceleration being boosted.

Sent from my SM-N910P using Tapatalk

xxAGAVExx · 07-05-2016, 08:20 PM

Some SPL or Whiteline diff bushings would be good to upgrade

Sent from my iPhone using Tapatalk

gomer_110 · 07-05-2016, 08:46 PM

You'll want to replace the bearings and seals at the same time.

BlackZeda · 07-06-2016, 07:34 AM

Quote:

Originally Posted by gomer_110

You'll want to replace the bearings and seals at the same time.

Ah, so the parts list mentioned first on the first post of this thread?

2x - 1L Diff Oil - (Motul 75/90)
2x - 38440-0C000 - Differential Side Bearing
2x - 38342-P9010 - Differential Side Oil Seal
2x - 11026-4N200 - Differential Drain Plug Crush Washer
1x - 38120-0C000 - Carrier Bearing Assembly
1x - 38140-0C00A - Pinion Bearing
1x - 38189-P0117 - Drive Oil Seal

B&W_Evader · 07-06-2016, 08:37 AM

Differential bushing too while you're in there. It's just a matter of time. Buy the tool for the rear mount and let us all know how well it works.
You shouldn't need to mess with the pinion unless you're doing gears too. Better not to touch it if you don't have to.
Check out my install: DIY - Limited Slip Differential Install

BlackZeda · 07-06-2016, 09:50 AM

Quote:

Originally Posted by B&W_Evader

Differential bushing too while you're in there. It's just a matter of time. Buy the tool for the rear mount and let us all know how well it works.
You shouldn't need to mess with the pinion unless you're doing gears too. Better not to touch it if you don't have to.
Check out my install: DIY - Limited Slip Differential Install

Are you referring to this tool: https://www.z1motorsports.com/transm...ol-p-9225.html

Great write-up on the install BTW...thanks! I will be doing this (actually helping a true mechanic) weekend after next and I will let you know how it went.

05-04-2015, 04:30 AM	#2 (permalink)
SurfDog A True Z Fanatic Join Date: May 2012 Location: Colorado (9000 feet) Age: 57 Posts: 1,796 Drives: 09 6mt, 13 Sequoia, Rep Power: 15750	The guys at Z1 sent all I needed EXCEPT Spacers. When you install you'll need a variety of spacers to try in order to get your lash just right. I used trial and error. your stock spacers MIGHT work if you are lucky, but you probably need to try in a few different sizes. This is the main reason this is not really a DIY mod. Have an experienced shop do it (like ship your pumpkin to Z1 perhaps) Heres a link to my diff building page to better explain the install. (I used a Quaife) Surfdog's 09 journal good luck GaleForce likes this. __________________ 09 6spd Berk CBE, JWT cams, ZSpeed CSC, Stillen (25 row oil, brake cooling, sways, gen3 CAI), Passport (9500ci), Quaife LSD, Z1 400 hp kit, ss lines, pads, rotors, clutch etc, Phunk's pan and fuel starve fix

11-15-2015, 04:05 PM	#3 (permalink)
hjo1078 Track Member Join Date: May 2011 Location: virginia Age: 46 Posts: 572 Drives: twin turbo 370z Rep Power: 5396	id like to recommend the wavetrac lsd for those looking for good performance with everyday driveability. I had a Kaaz lsd prior to the wavetrac. No more clunks at slow speeds! Difference is night and day, it operates so quietly and still will put that power down. The maintenance on them is basically install and forget. Fluid changes after 20k plus. For those with the vlsd, all you need to get is an extra axle flange. Makes my car so much more enjoyable. I think the kaaz lsd is just too agressive for street driving, the pops and clunks at slow speeds made my car sound like it was broken. And not to mention the constant fluid changes with every oil change. With that said though, the kaaz i think put that power down a little better than the wavetrac. But i'll sacrifice a little performance for driveability. Wavetrac® Differential - A torque biasing differential with a difference for more info And i got a great deal from vividracing on this. Hotrodz and jchammond like this.

11-15-2015, 09:08 PM	#4 (permalink)
Hotrodz A True Z Fanatic Join Date: Aug 2012 Location: NW, AZ Posts: 9,330 Drives: 10 Nissan 370z Nismo Rep Power: 2684385	This will be my next performance upgrade...thanks for sharing! hjo1078 and jchammond 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\|

11-15-2015, 10:35 PM	#5 (permalink)
hjo1078 Track Member Join Date: May 2011 Location: virginia Age: 46 Posts: 572 Drives: twin turbo 370z Rep Power: 5396	Hotrodz i have seriously been nothing but smiles since getting this wavetrac. My car drives like an oem car now. It is incredibly smooth. I would let u test drive my car if u werent in the west coast. Lol Sent from my iPhone using Tapatalk Hotrodz likes this.

11-15-2015, 10:49 PM	#6 (permalink)
Hotrodz A True Z Fanatic Join Date: Aug 2012 Location: NW, AZ Posts: 9,330 Drives: 10 Nissan 370z Nismo Rep Power: 2684385	Lol, I would take you up on that for sure! Sent from my SM-N910P using Tapatalk hjo1078 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\|

05-04-2015, 02:28 AM	#1 (permalink)
Imperial Enthusiast Member Join Date: Aug 2010 Location: Long Beach, CA Posts: 487 Drives: 10 Nismo 370Z PW M6 Rep Power: 15	What is its part number? Sent from my iPhone using Tapatalk

01-05-2016, 10:06 PM	#7 (permalink)
dP3NGU1N A True Z Fanatic Join Date: Feb 2011 Location: Irvine Posts: 1,682 Drives: 13 PW sport 6mt Rep Power: 19	What do you want your car to do if you don't track that an LSD will help you accomplish? Are you getting mods to get mods? If you're treating mods like pokemon and you just gotta have em all then by all means. But otherwise you wouldn't know it's there. Same with final gear swap. If you hate gas mileage then go for it. __________________ 35% Hooper Optik \| Takeda Attack CAI \| F.I. HFC \| Hotchkis Sway Bar \| Stillen 24row \| OS Giken Super Lock LSD \| TK Shift Knob \| EVO-R Carbon Diffuser

01-14-2016, 10:05 PM	#8 (permalink)
jchammond A True Z Fanatic Join Date: Nov 2014 Location: South Carolina Age: 58 Posts: 15,204 Drives: 13’ 370Z TS 7A/T Rep Power: 2684395	Good Thread; 11' open diff A/T,,,want to keep stock gear ratio-i just want both wheels to even power for drag/drift etc... Quaife,OS Giken,etc...? all opinion's are welcome-no roadcourse;mostly straight line & want it to be locked like a spool out of the hole. But'''' only under hard acceleration (trying not to completely throw fuel milage out the window) i know Quaife is helical gears & Giken uses conventional clutch packs... all input welcome. Ty osbornsm likes this. __________________ MazWorx built long block \| FI-TT-100 Stage 2.75 \| IPT built 7A/T http://www.the370z.com/members-370z-...s-musings.html

01-22-2016, 12:08 PM	#10 (permalink)
Hotrodz A True Z Fanatic Join Date: Aug 2012 Location: NW, AZ Posts: 9,330 Drives: 10 Nissan 370z Nismo Rep Power: 2684385	I have no experience with Quaife but I love my Wavetech and it is just like Quaife but better because it does lock when the wheel is free. The price, installation and maintenance are the same. I am pretty amazed at how difference in acceleration there is and on uneven surfaces you don't get the surprise step out because one wheel left the ground for .05 of a second. It definitely has increased my confidence under hard acceleration being boosted. Sent from my SM-N910P using Tapatalk JARblue, hjo1078 and osbornsm 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\|

07-05-2016, 08:20 PM	#11 (permalink)
xxAGAVExx A True Z Fanatic Join Date: Nov 2012 Location: Tampa Posts: 1,037 Drives: 09 370Z BLK M6 Rep Power: 53925	Some SPL or Whiteline diff bushings would be good to upgrade Sent from my iPhone using Tapatalk __________________ l 09/6MT l BP Twin Turbo Kit l E-85 w/Fuel Return l FI 18" Res CF CBE l Powertrix Ultra-Lite Coilovers l Wavetrac LSD \| Lots of SPL and Carbon Fiber \|

07-05-2016, 08:46 PM	#12 (permalink)
gomer_110 A True Z Fanatic Join Date: Aug 2011 Location: Perrysburg, OH Posts: 17,992 Drives: '11 Nismo #528 GM Rep Power: 36941	You'll want to replace the bearings and seals at the same time. __________________ '11 370Z Nismo #528 Fast Intentions \| Stillen \| Motordyne \| Uprev \| CSF \| Zspeed \| Z1 Motorsports \| AST \| Swift \| SPC \| SPL \| Whiteline \| Hotchkis \| Bride \| Schroth \| Robispec \| Cusco \| Nismo \| Volk \| Forgestar \| Hoosier \| RJM '17 Titan Bone Stock

07-06-2016, 08:37 AM	#14 (permalink)
B&W_Evader Track Member Join Date: Aug 2011 Location: CA Posts: 972 Drives: slower than before Rep Power: 387	Differential bushing too while you're in there. It's just a matter of time. Buy the tool for the rear mount and let us all know how well it works. You shouldn't need to mess with the pinion unless you're doing gears too. Better not to touch it if you don't have to. Check out my install: DIY - Limited Slip Differential Install __________________ \|RIP\|6spd-sport\|OSG-LSD\|XP8\|RBF600\|Eibach Sways\|RE-71R\|FI-34Row\|Gen3-CAI\|Yaw P.S.\| Last edited by B&W_Evader; 07-06-2016 at 08:44 AM.

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
Official Aftermarket Differential Thread	G37sHKS	Engine & Drivetrain	55	12-12-2019 07:48 AM
Lug Nuts - The definitive guide	osbornsm	Wheels & Tires	175	12-22-2018 12:55 PM
EcoJet: Definitive Edition - Jay Leno's Garage	Nismo89	Other Vehicles	0	10-31-2012 10:32 PM
Help! Need the differential bearing size/measure for an aftermaket differential	tkramwinkel	Engine & Drivetrain	1	10-02-2012 04:49 AM
The Definitive Z34 Brake Resource	SE	Brakes & Suspension	68	05-11-2012 02:19 PM