Official Aftermarket Differential Thread

[Mozen]

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?

[DR_]

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.

[Mozen]

Originally Posted by DR_

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.

[DR_]

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

[Mozen]

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.

[DOOMMONKEY777]

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.

[dP3NGU1N]

Originally Posted by DOOMMONKEY777

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.

[DOOMMONKEY777]

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

[Ivoidwarranty]

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

[dP3NGU1N]

Originally Posted by DOOMMONKEY777

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

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.

[DOOMMONKEY777]

Originally Posted by dP3NGU1N

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.

[elperuano]

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

[1slow370]

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.

[dimitarm]

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

[Elmo370z]

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