Anyone running Quaife LSD?
 

Hello,

I have a base Z with an open diff. and I want a LSD for both daily and track. I'm also on budget.....meaning I can't afford 2k+ LSD. Z1 is selling Quaife LSD for around 1k and installation is far more quicker/easier than others. It doesn't require any other parts for installation.

If anyone is running Quaife LSD or is knowledgeable about Quaife, please feel free to share your thoughts.

Also, I know that Quaife is Helical Automatic Torque Bias LSD. On the other hand, there is clutch type LSD like OS Giken. What are the benefits/disadvantages when running HATB LSD compared to clutch type?

And how the hell do you pronounce Quaife?

I love mine. Huge improvement over my OEM VLSD

Kwayf, if that makes sense. Lol.

I have a Quaife with OEM 6MT gears and a KAAZ 2-way with 4:08:1 gears.

The Quaife is quite soft in operation and works well enough on the track until I start being aggressive with the kerbs. Once one rear wheel is airborne over the kerbs, the Quaife is like an open diff, you need both rear tyres on the tarmac for it to lock.

Check auto wikipedia for details on operation of ATB and plate-types - it is relatively simple conceptually.

The KAAZ is one mean mutha .... it is set to be very aggressive and is worth as much as a second/lap for me at some tracks, and next to no time at others - it depends on the nature of each circuit and whether lap-time comes from being smooth and flowing the car, or whether the lap-time comes from being aggressive over kerbs and that is where the KAAZ shines because mine is very close to fully locked

Around town, the KAAZ is a PITA - it clanks, groans and creaks and puts a huge stress onto the drive-shaft CV joints, whereas the Quaife is a pussy-cat (in the absence of torque, it is effectively open, it is the application of torque in the driveline with differing wheel speeds that causes the helical gears in the diff to put pressure into the diff and force drive equally to both driveshafts).

Given your budget objectives, the Quaife is the way to go ... for outright performance, a 2-way will be the better option.

If the car will be daily driven go with the Quaife. I have one in mine and love the feel on the street. As said above, it will act as an open diff if a rear wheel loses contact with the ground. Luckily I've only had that happen a few times during autox events.

^ That about sums it up with everyone. I love mine, but remember the install will set you back another $1k with labor and supporting parts. Mine was installed at the dealer for $800 ish but look at the sticky thread on what else you will need.

Also it does not require special oil and you can rip on it right after the install, no break in period or procedure required.

i just picked up a wavetrac versus a quaife because i was concerned with warrantying the quaife and the whole one wheel in the air = no traction issue. ive heard warranty is a bitch since they're a UK company and you'd have to deal with your vendor. the wavetrac improves on the quaife in that if one wheel is in the air, the other wheel still has traction. cant wait to install it!!

What do you mean by supporting parts? I have to purchase something other than the Quaife differential itself? Or do you simply mean Diff. oil, seal, etc.

seals, bearings, axle stubs, diff cover (suggested).

i'm installing my wavetrac this weekend, and i've got quite a few supporting parts ready:

• an entire rebuild kit (seals, all new bearings, etc) - $200
• driver side axle stub - $150
• nismo diff cover - $130
• 2 quarts of motul 300 75w90 - $40
• new washers - $2

if you dont have a new diff bushing installed already, that would be another $100 for a whiteline bushing

I was under the impression that the Quaife was the only thing you need, no axle stubs or anything like that?

Zdayz 2015 woohoo!

That's what I've been hearing

We had to cut the stub axle on mine. I have the QDF13L model.

I wish I would have known about the wavetrac when I did the Quaife, but I can say that I have no regrets with the Quaife. if it ever fails I'll go the Wavetech route, but on the street you won't know the difference & I figure the only time I need wheel in the air traction is times like this
http://www.the370z.com/members/felix...7-ph-10089.jpg & double Detroit's take care of that ;)

This is going into my car later this year for the same reasons, did you buy direct from wavetrac or thru nissan motorsports usa?

woops, forgot. yea, you wont need any axle stubs with a quaife. they have specific models for base or VLSD replacement. you'll still need the other stuff though. bushing is definitely recommended as the stock one WILL fail. guaranteed. replace it while you have the diff out.

well the quaife loses traction in 2 circumstances, when one tire is in the air, and when you go from accel > decel. the wavetrac solves both of these issues. i got my wavetrac from todd at vividracing. he hooked it up, and they are a legit distributor!

...you know.... there's a whole post on what's required. *cough

I love mine but I haven't come to the point were I don't want all 4 wheels on the ground.


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Can't comment on the Quaife or standard Kaaz, but the Kaaz Super-Q is great, very easy to live with, and it works with the stock stubs.

Looks to me that op has done his homework for the most part and was just asking for personal experience and or to fill in something he might have missed.... You know..... And I believe there's more than just a post on it. Maybe even a thread or two. :tiphat: cough.

I am doing a TT build soon, might have to go with a quaife over the VLSD.

Love my Quaife & 7A/T with 3.357 gearing will still light up 345's.https://uploads.tapatalk-cdn.com/201...4b4c62deb7.jpghttps://uploads.tapatalk-cdn.com/201...455ccde074.jpg


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The wavetrace seems like the way to go if or when I become unhappy with the vlsd but sadly no AT option. So weird nissan made two diffs for the z. Oops maybe I'm wrong and the wavetrace can work with AT diff as well, vivid site specifies it for 6mt but z1 only specifies vlsd or open.

OS Giken 1.5 way.

I've been running the Quaife for the past two years. The biggest issue I have with it is getting in driveways. Sometimes coming in at an angle will cause the rear ending to lift on one side - especially with aftermarket sway bars - and I can't accelerate. I have to plan ahead a bit on the driveway at my home with a bit of momentum otherwise the car will spin the wheel in the air and will go nowhere. When both wheels are on the road, it's been a solid unit. No problems in 20k miles and I can feel it working its magic in tight corners. Also makes for good empty parking lot fun.

Anyone running Quaife LSD?
 

Quaif stays very cool and it is much lower maintenance then a clutch style. You probably can skip a diff cooler at track days. (I do).

True that it looses grip when lifting a rear wheel (and on ice and snow) but I love mine at the track.

It also torque vectors so it kind of "pushes" you around turns helping with understeer on the exit or corners

It is a good/ great option for a weekend warrior in fact I argue unless you a fully dedicated track car than it's the best choice (at least it was for me)

Z1 knows what stuff you need to install based on your base setup.

Be careful if you install a new stub axle that it has the same number of cogs in the ABS sensor "cog". My replacement from Z1 had a different cog and it was a bitch to figure out what was causing the intermittent Xmas tree of dash lights from the computer trying to make sense of the discrepancy!!! (The cog tells the computer how fast your wheel is turning).

BTW. Due to the expertise needed to getting the gear lash correct using a ton of different spacers this is not a DIY install. Perhaps have your shop order from Z1 if you are unsure about what supporting seals and parts etc you need.

This would be a good time to swap up to an aluminum finned (NISMO style)diff cover which will help keep your diff a bit cooler.

I have Wavetrac which is basically the same as Quaif but it does lock so there is still power going to the wheel that is in the air or slipping!

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I am going with OS Giken. Heard nothing but good reviews and my mechanic also agrees and he works on tons of Z's. But he wants me to get suspension first so it will handle the change better. Just my two cents


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I did my suspension first and after I had my rear diff installed I realized it was way more valuable and noticeable than some of my suspension parts. If you like track days it will allow you to put the power down more efficiently, get in an out of corners faster and be more predictable when you loose traction. Adding suspension to this will only make all things better. Get the diff you want regret it!

I have an OS Giken coming.

W/4.36's ???

My truck has 4.56's. Wish it had 5.13's, or 5.36's. I'm happy with the stock gearing in my Nismo.

I heard the Wavetrac is not good for daily driving, but better than quaife if not daily driven.

I don't see how it could be that aggressive. It is very similar in design and still not a clutch type. I mean hell corvettes come from the factory with clutch type and 99.9% maybe 99% never even see the track and are just street driven by a trophy wife and yet only get complaints when the lube techs forget to add the additive to the diff on maintenance.

That could explain something that happened to me in Fontana @ the cabin,
As I was blocked in & angled off the pad & down through the grass...was stopped at the top when Z angled off concrete & wouldn't move.
I got out & noticed L/R barely lifted & looked at R/R & it appeared that it had spun some.
Got back in w/door open & left rear was turning in air & suspended....started bouncing my 270lbs. & started to move then.
I'll play with that this weekend & throw a jack under a rear wheel, just to see...I know otherwise both wheels bite evenly & tire wear is even.

"Anyone running Quaife LSD?"
No, but in years past I have been known on occasion to have been taking Quaaludes and LSD simultaneously.

Haha I have the quaife this happened to me last weekend. Couldn't figure it out for a second

But I've had the quaife for a year and it's been great at the track, especially combined with kw v3s. Only regret is not changing the final drive! If you're gonna split the pumpkin open and you have stock sport gearing definitely change it out, the gearing is too tall for most tracks

LOL, you got some bad information my friend. As stated Jhill it is just the same as Quaif and everything Surfdog stated for Quaif is exactly the same for Wavetrac with the exception that it locks. If you do a little research you will see that the guys that make Wavetrack were once part of Quaif before starting their own company.

Yep, that is the deal. I have a steep driveway like other have described and with the oem lsd it would have to make sure I had some momentum to make it up the drive. After I had my Wavetrac installed I would purposely stop with one wheel in the air to see what would happen and it worked perfectly I drove up the drive without a hitch.

From what I have read and talked with others about LSD for the 370z is that OS Giken is the best if you are going be mostly track focused and it does well on the street. It requires more maintenance than the other two. Quaif and Wavetrac are the same for maintenance which is pretty much the same as OEM. Quaif is the popular favorite as it is proven and has been around for a long time. Wavetrac is also very popular on the racing scene but is not as well known as Quaif and provides the added feature of a locking diff as in a clutch type but is slight less aggressive. I figured at my diving skill level my LSD will be better than me for quite a while and I am okay with giving 0.1 or 0.2 seconds per lap if it is even that much.

The bottom line is you can't go wrong with any of those three rear diffs!:tiphat:

If you are boosted this may not be true. On the tracks I run I find first and second gear to be to short and I wish I had more top end in third gear as I am always on the limiter, I need a cam upgrade so I can spin to 8K rpms or get taller gears.