I'm thinking of putting in a LSD on my 03 Base Z.

First of all, I've read on product description that the nismo lsd is 1.5 way but can be changed to 2 way. Does anybody know if this means that it is adjustable or you have to add or subtract components for it to be 2 way?

Second of all, what is the difference between 1.5 ls and 2 way lsd?

What other companies make lsd for the Z? Any recommendations?

 

You do not have to add or subtract components to switch the NISMO lsd to 2 way.

A 2 way lsd has full engagement during accelerating AND decelerating. 1.5 way LSD has full engagment upon acceleration and only partial engagement upon deceleration.

Companies that make LSDs for our car; NISMO, KAAZ, Cusco, Giken, soon to be added to the list are Quaife and ATS.

 

Wait for Quaife, it's gear driven which means it works a little more seamlessly and won't pop and groan like the clutch types.

 

I think the NISMO one is the only one that comes as a complete upgrade for a base. With the others, you have to buy stub axles.

Also, the ATS carbon one should be very quite as well. The Torsen type put out by Quaife should be really nice too. But again, if upgrading from a base model, you will have extra costs.

 

I have a Cusco in my car...does not pop and groan at all

 

Link to where i can buy Cusco lsd?

If the Nismo one can be changed between 1.5 and 2 then it sounds the best for now!

 

To change opperation between 1 or 1.5 to 2 way is a stripdown.
While no parts are required it is still 3hr + job

 

The Cusco one is also adjustable from 1.5 to 2 way - several people here are running these (including myself) I'll PM you the link to our site - we have one left in stock right now, though as mentioned, you need the stub alxes and seals for install into a base model.

 

That is correct, with the Nismo you get the stub axles, bearings and seals in the box, required to do open diff conversions.

 

Adam do you happen to have the RS?

 

yes...so far thats the only one we have brought in....the MZ version is a bit hard core (might actually BE the same as NISMO). The RS one is spring loaded, so its much smoother...one of the best mods I did to date

adam

 

I have a Kazz Limited slip speced as 1.5way with 60% lock in my racecar (started out as a base model). The Kazz does make some noise on very sharp corners but otherwise it is like having traction control, you can get on the throttle so early coming out of a corner it is incredible how it just locks up and puts the power down. Kazz can build them either 1.5 or 2 way and can spec out whatever lock up percentage that you want. It is definately a lot more aggressive than the Nismo diff, the Nismo diff is set up more for street cars. The great thing about the Kazz diff, is that you can spec it out to how you are going to use the car and they will build it to your specs, so you can be very aggresive with at race type application or have them build it mild for a street application.

A lot of people are excited about the Quaife, coming from racing BMW's, Quaifes dont have a great reputation in BMW Race applications, they do some funny things to the handling of the car and have a tendancy to run very hot and overheat. Having said that, for a street car it may be ok.

 

Yeah based on your comment of "no noise" I had a feeling you must have the RS vs the MZ. Glad to know it's spring loaded construction works as advertised.

 

Along, did your KAZZ LSD replace a oem VLSD?

When I see critisism about the Quaife, I'm draw back to watching the glen torson technology unfold in the TAG F1 cars driven by Prost and Lauda and how it allowed those cars to put their power down better then all the others, make no mistake the car itself was the best and the Porsche designed TAG engine was awesome too. If you look at the season's of 85/86 the team had enormous success, Prost getting 2 of his 3 world championships.

That being said, a quick look into current F1 limited slip devices shows that most everyone uses a computer controlled viscous unit that alters pressure to effect different locking rates. They offer a versatility and adjustability mechanical systems cannot offer. Which is something we don't have avaliable in the Z33/CVP35/V35 aftermarket.

I could be wrong about this, but I have to wonder if those not finding success with the Quaife in racing have not been able to allow themselves to try different Torque bias ratio's (TBR), or have outright selected it wrong. TBR, meaning the exact percentage of torque biased to the wheel with grip. I could see the wrong TBR settings effecting control at critical times and altering understeer/ oversteer characteristics when least desirable.

 

ATS has released their carbon LSD now too. I have one in my daily driver and it's amazing. VERy smooth, no noise and will outlast the car. It's also carbon composite plating so the heat resistance is far superior to just about anything. For those concerned about durability and/or smoothness, the carbon is the way to go but the Kaaz and Cusco are also excellent units.

 

GSedan35,
The Kazz was installed in a 350Z base model without the OEM limited slip.

The Quaife does not work well with BMWs. PTG (Prototype Technology Group) the BMW NorthAmerican race team (Daytona 24hr/Sebring 12hr, IMSA, ALMS and GrandAm GT Champions) thought the Quaife was "Junk", also a friend of mine that was having problems with his called Franz Blam Racing (Longtime Porsche and BMW Racers in IMSA and GrandAm) to ask them about the Quaifes and their experience with them and was told by them "you want a Quaife, we have 3 of them sitting here that we took out of our M3 racecars, you can have them, their junk..."

Being around racing circles for the last 10 years, the general opinion is that in high horsepower, rear-wheel drive cars (above 300hp) Quaifes dont work well, they cause the car to go from understeer to oversteer and back again when your cornering. Also the cars were getting massive inside wheel spin. Dont get me wrong, Quaife makes a great product, just doesnt work well for a high HP rearwheel drive application, it was originally designed for Front Wheel Drive cars and works really well in those applications.

Having raced M3s and currently building a 350z racecar, comparing the cars handling and weight wise they are very similar, my guess is that the Quaife will still have the same problems that were found in the M3 applications, when installed in the 350Z.

Comparing what is used in F1 to what Quaife makes is like comparing a biplane to a jet fighter, no comparison. As far as I know, the Quaife comes already set up from Quaife and you cant adjust it. The teams that tried them, have as much technical depth as any topline raceteam, PTG in particular is one of the worlds best GT Endurance racing teams. If they think a Quaife is junk on an M3 then I would go with what they say, they can build or buy anything they want for their racecars and they use a locking diff with clutch packs.

 

Is it hard to change a 1.5 way to 2 way? takes a lot of labor? who do you suggest i bring my car in to do this or who would be most knowledgable in installing lsds?

 

I have the nismo lsd on my 04 base. I've never driven with a cusco unit so I can't compare the 2 but I can say that the nismo is much stronger than I anticpated it would be. I wouldn't say that it is more of a street setup. If I didn't regularly track the car there is no way I would buy one of these. The occasional noise doesn't bother me but the lockup even at the low setting is quite strong. The car has a tendancy to push/pull when you get on and off the throttle.
On the track is really where it shines. You can power out of the apex so nicely.

 

IIRC the Cusco is the same as the Cusco MZ

 

Adam, based on what I've read you saying before. I'm postive you ment to say,...............

"IIRC the Nismo is the same as the Cusco MZ".

Correct me if I'm wrong.