30 replies to this topic

[SKMsport]

Hi guys,

 

A mate of mine is chasing a front clutch type LSD for his EVO 3 rally car.

 

Looking for either Ralliart, KAZZ or Cusco if anyone has one. 

 

Or knows of a new supplier for KAZZ or Cusco.

 

Cheers.

 

 

[VIN18M]

I got mine from https://www.mdspares.com.au they were cheaper than ebay and posted very quick.

[VIN18M]

Sorry, that's a supplier for Kaaz

[Evo-00x]

If you do find a 2nd hand Kaaz LSD make sure you get the LSD bolts for the crownwheel with it.

From memory they require Kaaz specific LSD bolts for the crownwheel as they have a smaller head diameter on them.

The OEM Mitsu LSD bolts wont work because their bolt heads are too wide a diameter and foul on the Kaaz LSD cover.

[DOUGMO]

yep, MD for kaaz, and about the cheapest around for them

[Evo-00x]

Here's some pics I took of an actual DBM2010 EVO I-III version Kaaz LSD so you can see how they are constructed internally.

There's also a pdf doc attached.

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Attached Files

•  kaaz-lsd-english-instructions.pdf   256.09KB   1522 downloads

[SKMsport]

Cool thanks for the info guys, I think he is going to go with the Kazz,

 

I am actually going to grab a new rear Kazz LSD now!

[CanadianCD9A]

I have just the thing for a rally car - front Cusco MZ in good condition. PM me if you're interested.

[bazeng]

I have a whole gearbox with a kaaz inside. Looking to sell.

[SKMsport]

I already have a spare box with a ralliart front LSD. but will pass the info onto my mate Bazeng.

 

Canadian CD9A, does this replace the VCU?

[CanadianCD9A]

No, I just have front differential available, no centers. Anything for the center is nearly impossible to find now.

[BMGTZ]

centre diff.  LSD style.  

 

been for sale for ages... http://www.ebay.com....=item3cd838c4ce

[SKMsport]

Have seen that also Brian, is that the same as the tarmac one or completely different?

[BMGTZ]

no...very much different that is still 50/50 torque split

 

 

That has an lsd to replace the viscous and according to some old info I found should be a four spider...rather than the two which is standard.

[BMGTZ]

I offered 800 about a year ago....it was refused

[Evo-00x]

^^^ The Kaaz centre diff has been on EBay for over year. Says it was last updated April 2014.

I know the Quaife centres diffs are weak and break easier than stock.

I will have to check up on the Kaaz. But always be careful buying 2nd hand unless you trust the person.

I also would want to know whether they are a discontinued item or not?

I have a Cusco tarmac gear centre diff here with broken teeth on the outer drive gear cog that mates to 3rd intermediate. Im furious about it because when it broke about 2-3 years ago, I contacted Cusco who said they will send me one for $330AU from memory. So I had all planned to get it replaced... then got a message to say the Cusco tarmac was discontinued   and parts weren't available anymore. That is from Cusco Australia and Cusco Japan. I tried contacting everybody. Internally it's fine, but without the external drive gear its useless, except as spare parts for a housing and planetary gear internals. The worsrt thing about it is the outer gear just unbolts with allen keys for easy replacement too!!! grrrrr........

[SKMsport]

Hmm okay, that Kazz unit does look tempting, I usually replace my Ralliart VCU every season with a brand new unit.

 

Maybe this would give a better drive, especially on gravel.

[Evo-00x]

The tarmac gear was designed for a 65 rear and 35 front split for RWD bias and a bit of oversteer - which is great for tarmac and maybe rally cars on gravel.
The Kaaz is still a 50/50 split like stock but a tighter centre, so wouldn't it just make it understeer more than a stock centre diff on gravel?

Edited by EVO-00X, 17 April 2015 - 03:23 PM.

[SKMsport]

Most of the problem with the 3's on gravel is too much oversteer, Which I am trying to dial out at the moment. With more understeer you can drive it more aggressive, which should make it quicker. I wonder what the works cars used before they went to an active center diff? maybe something like the KAZZ?

[CanadianCD9A]

The LSD center is for off-road, yes. Unless you preload it very loose to work, it will cause more understeer. Before the 6-speed XTrac setup, Mitsubishi's factory rally cars used a Ralliart viscous coupling in the sequential 5-speeds, which was different from the Ralliart viscous coupler that Mitsubishi sold over the shelf to Evo customers. A couple of them have survived, but the whole transmission is needed to make it work.

 

I'd argue that the Cusco Tarmac is terrible for rallying - it's an open diff with no locking ability, after all. No locking ability in an AWD diff means it would allow one axle to spin for days while the other axle watched and laughed. Tarmac and gravel setups are typically complete opposites on the setup spectrum. Tarmac needs loose center diffs and heavier spring rates to prevent sway, gravel/snow needs tight center diffs and low spring rates.

Edited by CanadianCD9A, 16 April 2015 - 02:20 PM.