Can anyone provide any impressions of the ATS unit? I'm tired of my "one-tire fires" at many corners on the track, and need to put the little power I have to the ground.

 

Id imagine its a very good unit, im actually looking into this myself, because i will soon be replacing the final drive on my Z to a 3.5 and i need an aftermarket LSD. i was looking at the ATS Carbon LSD. It should last longer and definatley have amazing grip.

Ben Y
AAM

 

I imagine that carbon unit is lighter than the metal ones, but does anybody know how much?

 

according to their site, their LSD requires the 3.5 gearing to work
so if you have a 5AT pumkin, you need 3.5 gears too. It just won't work with 3.3 gearing so you can't just take a completely stock 5AT pumking and put this part in. Needs 3.5 gears

 

According to ATS their units last 5 times longer then competitors units. We have been very happy with the three clutches we have in the shop cars (two Evos and a 350TT). The quality is really amazing. ATS also has alot of experinace with road racing so they def. know what they are doing.

 

Well, I met up with Sharif this morning and picked up the ATS LSD. Once I get all the oil seals and side bearings, I'll install the new diff next week. Stay tuned for a official track review of the new LSD as it will be given a shakedown at Watkins Glen July 4 & 5.

 

Great! I look forward to reading your review.

 

very interested to hear your impressions...

sharif - any understanding yet if this will hold up in a FI application. I guess that's not the right question. I'm guessing it will 'hold up', but will its action be consistent as it heats up getting driven by so much more power? john - can you keep this in mind once you get some run time on it?

ahm

 

nice, keep us updated.

 

Well, this diff was the one Sharif was going to install on his, so I imagine it should. But then again, I think he's also waiting to hear my impressions after I flog the hell out of it for four hours on track at the Glen.

 

What is the cost of the diff? And why would it not work with the Evo 3.9 gearing?

I am also getting killed by the stock VLSD. I am fairly confident that after 10 track days in my Z I have roasted it. It it acts more like straight up open diff now.

 

Diff is about $1300 plus the cost of the recommended ATS gear oil. I honestly don't know why it wouldn't work with the 3.9FD... :shrug: Then again, I haven't ever assembled a unit, so I don't know.

I hear you about the jellybox... it's simply worthless to me at this point. I'm not sure if I've roasted it, or my driving style is simply too much for what it's capable of, or perhaps a combo of both.

 

I am pretty sure I roasted my stock. When I drive up in my driveway I come in at an angle. So as I go over the gutter, one of my wheels gets light as the other one is already up on the driveway. Then I get a lot of wheel spin from the lightened wheel. As such, I have determined that my Enthusiast model is not a Base model with cruise control. In other words, I have an open diff.

I was thinking of just doing the Nismo Diff -- but let me know what you think of the ATS. In particular I am interested in how loud it is during regular driving and parking lot situations.

 

Mine has always done that, as my current driveway is the exact same setup. It's simply just the fact that the VSLD only provides up to 30% lockup ratio. It's most likely your driving at the track that has improved and is spinning your inside wheel more.

 

Congrats John! Hope you get it in for the Glen! Jack, Brian & moi have the Nismo G.T. LSD's to compare. Are you getting the 3.9 too?

 

Keep us posted on the ATS unit, I've heard very good things about them. I can honestly vouch for the NISMO unit however. I'm using it in a full out Drift car and it see's frequent slides at over 100mph, and track days / practice events / or some sort of competition almost every weekend. It has held up to numerous 6K RPM clutch drops, and flat out harsh abuse, and it's still as strong as the day I got it (almost a year ago).*

If noise is a concern for you, or hearing LOUD popping and clunking noises bothers you, then it's probably not for you. I have mine set to 1.5Way, Full Lock (100%), soon to be 2Way Full Lock, so it might be quiet on the low setting (60%)...good luck with the ATS!!!


*Keep the fluid changed often!!!!!!!!!

 

So anybody got a review of this diff yet?

 

John had trouble finding the oil seals in stock, so the install is going to have to wait.

I wanted a answer a couple of the questions posted.

Yes, the ATS Carbon LSD is perfectly suitable for high HP forced induction applications. The stock LSD quickly overheats, and provides an unequal launch feel...makes the care feel squirmy.

This unit was slated to be installed on our car, but John needed it for a trackday, so I had no hesitation to give him this unit. Also, since John is an experienced track guru and instructor, I figured he would be more qualified to give a review than myself.

I have ordered another LSD from ATS which I should have on Tues. I'll be installing it alonge with the Level2 Drive Shaft Shop axles. The DSS axles are underated, and can easily support 500-600whp.

Here is the the link to the ATS Carbon LSD's if anyone is intersted. We already have the lowest shipped prices on them, and if you see anything better, we'll match it.

Having sold 10 carbon clutches, I have been thorough impressed with ATS's carbon products, and we highly recommend them. I assume the ATS carbon LSD will overdeliver as well.
http://www.forgedinternals.com/store...5&cat=0&page=1

The ATS LSD oil is $90 with the purchase of an LSD, and comes in a one gallon container. Should be enough to fill the diff, break in, drain, and then refill.

 

Is the ATS diff 1.5 way or 2 way? There is no mention on your or the ATS site that I can see.

Does the diff have different settings like the Cusco dffs? ie Cusco 1.5 way can be set to 1 way operation as can the Cusco 2 way.

 

It comes setup from the factory as either 1.5 way or 2 way...you pick.

You can change it afterwards, but it does involve some labor, and a part swap. I know this is a big generalization, but the drifters usually prefer a 2 way, and the road guys like 1.5way.