Official Aftermarket Differential Thread
 

I figured out that we need a differential thread in this forum.

Please share your opinion.
What differential you have?
Do you like it?
Will you buy it again in future? (if not, what would you get?)

Here are some of aftermarket LSD available for our cars.


Quaife Automatic Torque Biasing (ATB) differential
Quaife Diff....


Nismo GT Pro Clutch Type Limited Slip Differential
GT L.S.D. Pro


Carbonetic Carbon LSD
Carbonetic LSD


OSgiken
OSGIKEN LSD


Cusco LSD Type RS
Cusco LSD


Cusco LSD Type MZ
Cusco LSD

FAQ:
What's the difference between 1 way, 1.5 way and 2 way LSD’s?

1 way lsd: An LSD is activated only when the throttle is on and when the internal cam rings has an angle on only one side.1.5 way lsd: The angle of the cam rings for the off-side is very close to 5-20 degrees which will make the LSD ineffective when the throttle is off (during deceleration).The Across 1.5-Way LSD will work similar to 1-Way LSD during deceleration.

2 way LSD: The 2-Way cam rings angle are cut in the same degree on both sides (throttle on and throttle off sides). A 2-Way LSD will activate during both acceleration and deceleration. 2 way is a popular choice for drifting.

A sample pictures of ways of LSD's. Left is 1 way, Middle is 1.5 Way, Left is 2 Way

1) O.S. GIKEN
2) Yes
3) Probably will never have to buy another one (no tracking)! I've got one in my EVO 8 too.

I've got the Quaife and it does its job. Should never have to buy another, it comes with a lifetime warranty.

Did you have the sport package VLSD and if so how much better is the Quaife?

OS Giken here. Need I say more.

I had a Quaife diff in my 350z. I think I'll go with it again.

x2

yes, and the quaife is much better. I got a lot of slippage with the stock one transitioning from 10a and 10b at Road Atlanta and now I get none.

So let me get this straight... I have a touring model with out sports package. If i get the Quaife ATB Helical Differential. It is simply a drop in product? I do not need other parts?

I'm thinking about buying a Quaife as well and would like to know the same for a base. Is it worth it to have the dealer install or a local shop?

OS Giken

Cusco RS 1.5 80%
40/40
There are better ones out there now, so probably not; but for the price and availability at the time ..... it was a bargain

I think you have to get a non-VLSD stub shaft. I curretly have the Quaife sitting here waiting to install, but I am not 100% sure on this whole needing the non-VLSD stub shaft.
I cannot seem to get a straight answer on it myself. I have even called both Z-1 and Forged Performance and never gotten a straight answer. It really kind of disappoints me.

I have a base model with open differential as well and would also like to know if i need other parts for install!

lol sounds like a lot of people need to know about this. I looked on the Z1 site, and it says you do not need anything if you have the base model. Only if you have the sport model you need the stubs. But i still feel unsure about it

So to revive this a bit...

I have a Carbonetics 1.5 way diff now and im sick of having to get it re-shimed all the time. Ive been hearing great things about OS and Quaife however i was leaning towards Quaife due to the warranty and no mess no fuss reputation.

What do i need to buy with the Quaife to get it to work with my car as it is already set up for the Carbonetics?

If you get the Quaife QDF13L it should just drop in as it is a direct VLSD replacement. I just received mine and hopefully will get it installed this week.

Let me know how it goes! ID love to figure out whats going on with mine and either rebuild the diff or replace it.

I found these DIY instructions and unfortunately it appears with the QDF13L I will need to cut one of the axles. I though that was the whole point in the QDF13L :shakes head:

Aww snap...i think a call to Z1 for some advice is in order. Good find on the DIY however im not thrilled with cutting anything. Perhaps ill make do with the Carbonetics and see if i can find a German shop to rebuild it.

I currently have VLSD (stock) i have two on my mind
1) drexter mechanical lsd i got a quote starts 3k
2) OS Giken is my only other choice i got a quote 1600

I be live quaife has wheelhop and carbonetics needs lsd cooler for it to preform 100% under constant stress Drexter never gets too hot, never wheelhop. OS Giken has lil wheelhop inder stress no cooler.

I don't see how wheel hop has anything to do with the type of LSD you have... That has more to do with your bushings and suspension than anything else I think. Someone correct me if i'm mistaken.

Umm i think ur right it does has to do with suspension n bushings they just prevent it by holding everything in place but wheel hop occurs when on a turn wile the differentials dont evenly distribute the force between wheels causing one of them to over twist resulting wheel hop. Also plz correct me if am wrong



Ahhh...ef it i dunno am getting OS Giken looks prettiest

Wheel hop has nothing to do with the type of differential used. It has to do with the suspension setup.

Are you sure we're talking about the same type of wheel hop? AFAIK wheel hop occurs in straight line hard launches where one wheel bounces up. As the LSD transfers torque to the loaded wheel then that wheel hops up as the one in the air hits the ground and achieves more grip. All of this repeating creates a resonant frequency that begins to damage your differential links. This is a very laymans way of describing it but the idea is there. Stiffer suspension and bushings helps this by not keeping both wheels on the ground more effectively.

Ahh..ty for the explanation i knew little, but wasnt shure becauce i have seen drift videos where wheel hop occurs, just thought it had to do something with the differentials. Am sorry for the wrong description, allthough i think OS Giken is the one i would go for just my opinion.:tiphat:

If I have an 08 g37s with the RAS will the Quaife be just a drop in?

ok i was looking for this thread recently and glad i found it. Ok i had the quaife and i'll clear up some instal stuff. The viscous replacement you do have to cut the longer stub shaft down because it doesn't fit. what makes it different from the base model quaife is that the c-clip that holds either the cut down vlsd stub or the base stub is in different spots, so even though after cutting it is the same length as a base stub the c-clip will still be in a different spot. ok next i have a question on the OS Giken it would seem from looking at the center parts that it is more of a 1.75 way, does it feel harsher on decel than a normal 1 or 1.5 way lock up?

Also the quaife does not be have well after you pull one wheel into the air, as this is paramount to it's design i have heard of guys removing or weakening the rear sway bar and stiffening the rear springs instead while increasing down travel to keep the rear wheels on the ground in all situations. <not to be done by an amateur or your most likely putting it in the grass/wall. the z also has brake differential assist which actually makes the quaife even more effective.

Does anyone know if osgiken lsd for 350z is the same diff for the 370z also?

What diff would be ideal for mild track usage and good for DD?

Quaife is the best for DD and has ZERO maintenance.

My vote, and nearly installed on my ride.

:iagree:

Similar operation, should be different part numbers.

i asked osgiken and they said there will be no more 370z version in stock, only 350z version which fits 370z.
i guess everything is the same

Quaife doesn't lock up both wheels because it's a helical. If you want to try drifting helical a are no fun.

bringing this back from the dead. Who here been running an aftermarket diff for sometimes? how you like it? how is the maintenance? I am leaning towards buying an aftermarket diff but I don't see much discussed about the subject.

All of my research steers me toward the Wavetech differential. The company known as Autotech was formerly one of the main Quaife distributors before they decided to create their own differential.

I believe they have an exclusive deal with Nissan to resell them. So you can order them from your local dealer.

Thanks jarblud, I will look them up

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Jar naied it and that is why I went with them. If I'm not mistaken Nissan uses Wavetrac on thier 370z race cars. Also I got mine from Vivid Racing, you may want to compare cost.

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Thanks hotrodz, much appreciated guys. I will definitely be doing my research

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Maybe we can save some coin if we have 2 of them shipped up to Canada at the same time.