TorSen LSD downside? How about Kaaz?

[yhatzee89]

Well I'm trying to figure out the route to go for my diff (mine is shot) and I come across the JZA70 TorSen. Now I know all the high HP and track guys say they suck, but what about for just Some occasional spirited driving and possibly future autoX? Will the diff not hold up to that even? I just like the fact that it provides power to both wheels at different rates when turning, seems like an improvement in theory at least.

Also in my search I ran across Kaaz 1.5 and 2 way LSDs. What are these and are they also a valid option?

 

[3p141592654]

I believe you want a 2nd gen Torsen out of an IS300. The JZA70 Torsen is known to be weak.

 

[1-2clutch-u]

I have the kaaz 1.5 sq. what do you wanna know. I got tons of data

 

[yhatzee89]

What is a 1.5 for starters? Is it a TorSen diff? In my research I've learned what the difference between a LSD and a TorSen, but I have no idea past that. So any info is useful to me and appreciated.

 

[IJ.]

I used a T1 behind my 550rwhp 7M, no failures but they WON'T take high impact loads like Drag racing on sticky tires, LOVED how it drove so predictable

 

[yhatzee89]

So is it pretty reliable as long as I'm not dropping the clutch with 700hp? (I drive an auto anyways, and a stock 1j)

 

[Dylan JZ]

try lifting a wheel with one and then tell me how 'great' they are.. lol

I prefer stock clutch type diff with the Weir Performance upgrades.

 

[yhatzee89]

try lifting a wheel with one and then tell me how 'great' they are.. lol

I prefer stock clutch type diff with the Weir Performance upgrades.

Lol Well for those of us that don't go off roading...

 

[3p141592654]

Yeah, really. Its pretty much a made up problem except if you are setup with a really stiff AR setup that actually picks the inside wheel off the ground, or off-roading.

 

[Dylan JZ]

Not uncommon anywhere you dirt drop, have dips or bumps, and/or an incline, but whatever right? It's definitely made up

 

[1-2clutch-u]

1.5 way means that its locked or locked to how ever much you set the clutch packs to while on the gas under brakeing its only 50% locked or 1/2 the resistance of what you have it to. I love my kaaz 1.5 I road race and drive it on the street also no issues. Lil clunking but really nothing major. The fluid is a bit much but gotta pay to play. What more you would you like to know? ask anything.

 

[IJ.]

try lifting a wheel with one and then tell me how 'great' they are.. lol

I prefer stock clutch type diff with the Weir Performance upgrades.

Used to run into this issue on one of the mountain runs I did from time to time, Some TrueTracs run a small preload pack to overcome this for offroad use.

 

[Poodles]

Want to know how to fix that little issue? Apply the brakes lightly

McLaren F1 ran a Torsen, just sayin'

 

[IJ.]

Want to know how to fix that little issue? Apply the brakes lightly

McLaren F1 ran a Torsen, just sayin'

Yep you learn all about Trail Braking with one, if I get any of my AWD cars tuck I just pull on a couple of clicks of hand brake and they climb their way out.

 

[1-2clutch-u]

And now McLaren runs an open diff. Point is that with out electronics to back it up aint shit. but I Tried the weir upgrades and they just wore out after about 8 track days. And even when it was new it felt weak. I was able to make 2 lines when doing a burn out but road racing I felt the inside tire unload all the time.

 

[Dylan JZ]

Weird.. quite a few folks now running the various Weir upgrades with no issues.

Hopefully you were not using the crush washer at that point? :shrug:

 

[1-2clutch-u]

i had the crush sleeve n all but Im sure the W kit is fine for what most people do esp for drag. (I have a welded 430 back when I thought it was the right thing to do) But I know the kaaz locks every time and you can adjust it too. Im still dieing mine in to fit my driving style and how I want to drive to save tires but still be fast. It unlocks smoothly and if you wanted to drift it does that too.

 

[Dylan JZ]

The Kaaz is great no doubt at all about it, but in order to make the Weir upgrades effective one has to utilize the solid spacer and shims they sell, otherwise it's essentially back to square one when it gets beat on.