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)

http://www.the370z.com/members-370z-...journal-2.html

good luck

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.

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

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


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

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Anybody have an answer on this yet?? Worth upgrading from stock VLSD if you dont track??

-- I also have the sport pkg LSD and I was curious whether or not I would really need to upgrade if I went with 4.08 gears.

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.

The problem with the OEM VLSD is that it easily overheats & performance falls off fast & will eventually burnout leaving you with 1 tire fire syndrome. I like solutions like the gear driven units from Wavetrac & Quailfe over clutch pack solutions which require more maintenance & most of the time special friction additives. If you are a person who likes spirited driving thru the twistys, the Wavetrac & Quailfe are great options. For competition clutch packs are more positive in their engagement & if it's a drag car nothing beats a spool.
if you are looking for more drive out of the corners, an aftermarket diff will be an improvement over the VLSD
If it had been out when I did my Quailfe & gears, I would have opted for the Wavetrac as it has an advantage as it is able to be tuned.

YMMV :cool:

Well written and good points! Thanks. I live in Florida so most of my driving is in a straight line :) I really won't be visiting a track too often either as I want this car to last a longggggg time with little to no maintenance. I might stick with the VLSD but unsure as of yet. If I do switch most people I see are saying the Wavetrac one is the one to go with if you do upgrade!

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.

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.

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So just to verify this kit will work for upgrading rear lsd. I know I'll need a stub axle:
https://www.z1motorsports.com/rear-d...it-p-7528.html

Also there's a post talking about ring gear bolts are those necessary?

Thank you

Does anybody have some insight?

I've been reading much about getting a finned NISMO diff cover for my TT conversion. So I had a look under my UKDM 370Z GT Edition M/T.
It was built April 2013, hence MY12.

As you can see, mine has a finned stock diff housing.. How come? When was this introduced by Nissan.. and does it mean I can skip the Nismo diff cover mod? On google I cannot find any 370Z resembling my underside :icon14:
http://www.prelude.myzen.co.uk/370Z/Temp/MyRearDiff.jpg

Different specs for different markets. The GCC (gulf cooperation council) spec cars also come with the he finned differential cover.

Differential Install Thread
 

My experience installing an OS Giken LSD into my 2011

http://www.the370z.com/diy-section-d...l-install.html

So I ordered a Wavetrac LSD from Vivid Racing and am now looking at the additional parts I need to install it. I have a 2010 NISMO (which I believe has the stock VSLD) which Wavetrac's website indicates I need a "RH axle flange 38220-JK01B". Would someone confirm that this is the only part I need? Are there any other parts that would be good to replace or upgrade while I am at it?

The best price I see is here: http://www.nissanpartsdeal.com/parts...220-jk01b.html

Some SPL or Whiteline diff bushings would be good to upgrade


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

Everything they said and get a Nismo finned diff cover too!

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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

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: http://www.the370z.com/diy-section-d...l-install.html

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.

Yep that's the one. I would of bought it if I had confidence it worked. Saw somewhere that you need to replace the threaded rod after each use because of the force required to remove the bushing. I would be worth it if it works

So I guess I should have thought and asked about this before I ordered the Wavetrac LSD (BTW, I ordered the Wavetrac LSD); has anyone with this unit driven their Z in the rain or snow? I am guessing it would only improve traction and possibly settle down the traction control. Hopefully it doesn't confuse it. :confused:

Lol, you are going to love the Wavetrac, come on now it the LDS Nissan uses in their 370z race cars. Also, I can tell you if have tires that are good in the wet you will be just fine. I done over 100 in the wet with no problems!

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Ninja Edit: The most fun I had was driving in the wet at on the Dragon at ZDayZ. What's great about a LSD that it locks and is predictable, that is when you lose traction in the rear it's easier to react to what is going on.

It performed beautifully on the dragon in the rain. I think i was going just as fast in the rain as when it was dry.


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Guess what showed up yesterday!

http://www.the370z.com/members/black...vetrac-lsd.jpg

Now if I can ever get the axle flange I will be in business! Thanks for all the information and help fellas!

So the Wavetrac LSD has been installed and I can't say enough about or quantify the improvement in traction and overall impact in performance. I rarely turn off traction control (I used it to learn to be smooth and shift weight better in some known tricky spots along my routes), so where I know it will become active and disturb the power transmission, the LSD has pretty much eliminated these instance in 8 out of 10 times. The severity of the effect of traction control has been greatly reduced and recovers much more quickly the other 20% of the time. Someday I will be a man and turn it off altogether!

Thanks for the information and suggestions fellas...I am very pleased by the results so far!

What was the total costs for this mod?


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For me, since this is my DD and I also had the clutch master cylinder and CSC elimination kit installed it was astronomical! But without all that...

Here is the breakdown:

Wavetrac LSD $1,159.00 w/s&h and tax
Axle Flange (1 needed for NISMO/VSLD) $194.61 w/s&h and tax
Z1 Bearing and Seal kit $279.00
Motul Diff Fluid $41.90
Labor ~$300

Total: ~$2000.00

Extras:
NISMO Diff Cover $148.00
Whiteline Diff Bushings $98.00

Was it worth it? I love my Z and I drive it in the winter, so YES!

Thanks alot. Very insightful infos!


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What's the consensus on install of a Wavetrac for a 7AT with the OEM VLSD?

Can you share from which vendor you purchased the lsd? Also
Did a shop do the lsd install? Did they measure the backlash and buy and install new shims?
Does your cruise control still work?

I bought the LSD from Vivid Racing (Todd to be exact) which I would recommend since they were so helpful.

An individual that happens to be a mechanic performed the install, and yes, he did a lot of work with the shims which were new.

If I think about it I will try my cruise control and let you know if it still works.

I bought my from Todd as well but is no longer at Vivid. The install was done by my local shop and shims were adjusted by the mechanic. The cruise control works perfectly. The to remember if you are tuned ecutek is, that ecutek functions are disabled when cruise control and or vdc are enabled.

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Don't mean to bring this thread back from the dead, but I can't seem to find a very specific answer of what you need for a swap.

I am going from a Base Open diff to a Sport VLSD. I'm swapping out the entire pumpkin. What else is needed? I got new bushings. It looks like a direct replacement.

Really? My cruise and VDC still work regardless which map I'm running.

I don't recall offhand but there are certain swaps where you need one side stub axle and some where both are required, there's where none are. Don't recall which is which I'll try and look it up and see if I can find ind it. Need that refresher myself anyways since I'll have a new LSD going in my base soon too

If you have the complete pumpkin (stub shafts & all) i'm pretty sure you just bolt it in,,,though i would R&R rear crossmember bushing & you say you have the bushings.
Also,Think about an up-graded rear cover w/higher capacity from Z1 Motorsports.
Ver Nice piece.
Also,,,if you phone them-they could give you a definite answer about compatibility.
I'm thinking where people are having issues;is when the try to swap internal parts from a normally open base diff/to a diff from a manual....as myself chose to install the Quaife Helical Locker in mine-designed for the base & retaining my 3.357:1 gearing.
Hope this helps,as the 2 speed sensor's are located on the rear cover & read off of the toner ring's on the stub shaft's...therefore speedo will be accurate & abs,cruise, etc.. will work properly. Z1's# (770)838-7777