i tryed searching for sound clips or videos but cant find any. when im in first gear. and i slowly take a turn, i can hear that the back wheels kinda jerk.. its like a grip grip grip noise, its not a constant motion. so it seems almost like the tires are kinda jerkin, instead of spinning in a full motion.. anyways if u know what im talkin about, let me know if this is normal or not. thanks

 

The noise you are hearing from the tires is them dragging. The lsd is locking up when you are hitting the gas and dragging the inside wheel. It is completely normal.

 

Yes like Sisith said that is completely normal...It is a little hard getting used to. I KNOW, but it will do wonders when you go drifting.

 

Bringing back an old thread! I was searching and never found my answer.

I know the problem stated above is normal but my question is: does it happen even when it is set up at 60%. I can't remember which setting I used to install it but I believe it was 60%. I hate my car @ 1st gear because if this, especially when i'm letting the clutch out @ 1st gear and turning.

 

nobody?

 

You are ****ing retarded.

Why would you buy a diff without understanding how it works...

Wtf

 

maybe someone could explain it to them. They are new people here and I think you response isn't helping. The think that is only with this site, they are just looking for help

 

Normal. Probably should have done more research before buying it.

That said switching to a different fluid can make it a bit better. Try getting some MOTUL 90PA, however it's never going to to be silky smooth/unnoticeable.

I have mine set on the 80% setting and don't find it to be bothersome. I hardly notice it anymore.

 

1) I am not retarded.
2) I know how a lsd works 100 times better than you.
3) I am asking a question regarding THIS PARTICULAR LSD. Unless you didn't know, this lsd is adjustable and I want to adjust it to get rid of my tires "jerking" every time I take a turn at low speeds, just like oem lsd's.
4) Thanks for your ridiculous and ignorant post.

 

I already got Motul 90PA but I still feel it pretty stiff. My tires always "jerk" when I am letting out the clutch at first gear while turning, no matter how slowly I let it out. I don't care for the noise that comes from the lsd, but I really don't like my tires jerking every time I take a slow turn.

The thing is that I don't remember which settings I used and wanted to know if it is normal at 60% because I really don't have time now to open the differential. If it is not normal at 60% means that I didn't set it at 60% and will have to open and readjust it. I just don't want to take out the diff, open it, and then find out that it was at 60%.

 

except he has it installed already. go buy a manual car without knowing how to drive it and make a thread and see what the response is.

 

1) I am sorry my overly grandiose exagerrated sarcasm was not apparent.
2) you obviously don't.
3) you wouldn't ask this stupid question if you understood the difference between THIS LSD and a stock VLSD. And newsflash: I have 'this particular' LSD installed on my car.
4) you are welcome, next time do research before you buy a 'particular' LSD.


edit: and I just realized something even funnier: I wasn't even talking to you. fancy that.

 

Then explain to me why stock lsd's don't show this problems. My bro has an 04 Track and his tires never ever "jerk".
I think you still don't understand what my question is. Is this still supposed to happen at 60%??

 

Jorge12887 - i think i can help explain:

STOCK VLSD - is just that a VLSD - if you understand the internals of the stock VLSD - it uses a Viscous fluid inside a "unit" that holds "LOCK", but it is no where to be compared to a clutch type / track type NISMO LSD.
Two complete different worlds of rear limited slip differentials made for two different reasons... - yet both called LSD's.....

The stock VLSD is to satisfy the consumer by Nissan and is a selling point for the AVERAGE JOE buying a sports car - it makes people bump up from purchasing a base mode to a higher cost model...ie. enthusiest, performance, touring...yada..yada.....it is decently strong for track use, but most know that it is subpar in comparison to any OTHER aftermarket LSD made for the Z.

NISMO LSD: - In my honest opinions one of the strongest engaging differentials out there!

YES IT WILL STILL MAKE NOISE, JERK, ETC AT 60% LOCK....HELL IT WILL DO IT AT 1.5 WAY - 50% LOCK!!!

SO TO ANSWER YOUR QUESTION! YES - COMPLETELY NORMAL at 60%.

The NISMO is what a "TRACK - road race, autoX, DriiiiFT" Z owner would want in their car! engagement is while power is inputed from the drivetrain! no tire contact needed...thats why when you are driving in low speed, it takes input from the drivetrain and transmits it to the wheels....regaurdless of speed...IT WILL LOCK!!!!

TO HELP YOUR SITUATION - but wont completely eliminate it!
try this stuff .....pic below!

TRANSX - SOLD AT AUTOZONE!

I have used only MOBIL 1 - with out this fluid and with. and WITH IT! helps eliminate the jerky/klunkyness big time! but wont eliminate it!

as im a NISMO LSD owner, and have been in TT Z with NISMO LSD's installed (friends of mines, etc) - I know for a fact this helps quite a bit! but will never eliminate the jerky/klunky action a LSD like the NISMO is DESIGNED to provide.....


1. DO YOU TRACK YOUR Z?
2. WHAT WERE YOUR REASONS FOR PURCHASING A NISMO LSD?

The answer to those questions will warrant if you need such an aggressive LSD.... to me it sounds like you should have saved for a Quaiffe...(completely different type of lsd - helical gear design utilizing input from the street contact (wheel contact))

-Jason

 

I already answered your question with my inclusion of the 'V' in front of the 'LSD' portion of the stock unit

and also, Jason just put a school on. I need to read it and check it for accuracy, but I don't doubt just by skimming it that he is correct in his explanation.

so you still think you 'know' so much about LSDs? lol.

 

your explanation is great and spot on for the most part, but incorrect on a few points. Here are my two cents:

The Nismo unit is a mechanical (torque) action, clutch-type diff. I underlined that to highlight why the question makes no sense. Mechanical actions are constant. It will always work the same way no matter the speed of the car. The 'stock' V-LSD is an inertia (speed) based LSD. V refers to Viscous fluid that gets thicker when the shear point is reached and acts like a LSD.

You (possibly), and Jorge are confused as to what adjustment the Nismo has and you mischaracterized what the 'X way lock up' refers to.

- The Nismo's 'on the fly' adjustment relates to a three setting torque pre-load adjustment. This does NOT adjust the lock.

- the 'lock' refers to the allowable wheel speed difference that the limited slip effect kicks in, locking the axle stubs together. To adjust this, you adjust the internal clutch pack direction/order.
*the higher the percentage lock, the more aggressively the LSD kicks in.

- The 'way' relates to forces that the LSD is set up to activate on.
*1 way is on acceleration forces only
*1.5 is full action on acceleration and partial on deceleration
*2 way is equal action on acceleration and deceleration torque input.

(Action on either forces depends on the set up on the internals, all variable and Nismo does not disclose what theirs is set at.)

This behavior can easily be demonstrated by entering a turn under throttle and lifting off (please god don't do this at a high speed). If it's 1 or 1.5 way, when you lift the front end of the car will 'tuck' in under the same steering angle because the LSD is not actioning on those forces. If it is 2 way, the car will remain on the same path.

'Lock-up' relates to the way the internal clutch plates are stacked. Another reason the question or concern is ridiculous is that clutch type differentials can be set up to any lock you desire. The Nismo is still disputed to what set up it comes with, but it is extremely aggressive... some people saying almost 100% on accel.

...

As I sort-of explained above, the clutch action is set to activate based on a preset allowable wheel speed ratio difference (60% = 40% difference between wheels). If at any time (read: any speed) this ratio is exceeded, the limited slip will be activated and the wheels will lock up. At low speeds, and when making tight maneuvers (like parking, making hard turns on residential streets...) the action is magnified because of the extreme wheel speed differences inherent; in some movements, the inside wheel would barely move on your car... pivoting around it. The mechanical LSD (being a constant) cannot disregard the exceeding of the allowable wheel speed difference so it locks them together, hence the popping of the inside wheel in these instances. A speed sensitive vLSD would never get near the needed forces to make it shear.

So why I laughed at the premise of the question because it's a lack of thinking on the questioners part and basic ignorance of the topic.

now someone else can come in and correct me (Tom hopes not)

 

^^ you are correct......and i completely follow you.......i just tried to keep it in laymens terms cause i highly doubted the questioner would follow either way......

his response on post 13 shows clearly............ his lack of knowledge on the topic and differences between the units......he thinks lsd is lsd and all lsds work like lsd's from that comment...

its all good though............we all had to learn somewhere......hope he learns from here.......

lol..
-J

 

true, I shouldn't have been so harsh. was late. or some other excuse

 

lol.......subscribing to see what he thinks of all of this....

 

"I think you still don't understand what my question is. Is this still supposed to happen at 60%??"

yet he knows 100 times more than I do about LSDs.


I think I still don't understand it.