Looking to upgrade my diff to one of the Cusco units..from what I gather, the MZ ramps up pretty quickly while the RZ offers a more gradual transfer of power. Anyone know if one is stronger than the other? Anyone know a good dealer that has decent prices on these units?

TIA

Michel

Not sure if you are already set on a Cusco unit but Quaife has some great products and they offer a limited lifetime warranty on their differentials; even when raced. :]

think they'd stand up to a 450-500rwhp third gen on the strip? Street tires?

get the RZ ? which ever one locks up harder.... i just read it the other day.... its a clutch diff it will take abuse https://www.nopistons.com/forums/pub...IR#>/smile.png

Just downloaded their 2004 parts/price list. No mention of an FD rear differential.

MZ is 1.5, RZ is 2 way, right? i believe strength wise they should be the same, its just how you want it to react, either all-the-time or some of the time

Weird. Quaife makes a complete 6 spd. conversion for the FD transmission casings but no rear differential?

I think you might want to consider getting a Kaaz LSD only because I was in your shoes before and wanted a Cusco. What swayed my decision was a buddy reminded me that Cusco has no representation in the US while Kaaz does. There is not Cusco USA/NA so if you have any problems, you have to deal with Cusco Japan. Just my $.02.

Thety're both 1.5 way although you can order them 2 way as well. www.napsusa.com is the official distributor of Cusco products in the states, so they have as much representation as KAAZ. Cusco diffs are rumored to be even stronger than the KAAZ diffs.

Michel

kaaz is rebuildable in the USA for $150.... that i know for a fact i called em https://www.nopistons.com/forums/pub...DIR#>/wink.png

Same with Cusco. Rebuild kits are offered.

Cusco offers 1way, 1.5way, and 2way in using two different mechanisms (RS and MZ), making for 6 different types of clutch-type LSDs. The RS LSDs are spring-loaded which preload the clutch plates. MZ LSDs using conical side plates to preload the plates. I haven't driven both so I can't offer a comparison, but I'm currently using an MZ on my AE86 which locks up VERY quickly. If I make a right turn from a stop, I can feel it try to lock up about an quarter of the way into the turn. Same with making U-turns. It's kind of a hassle some times with the shuddering it produces at low speeds, but it sure is a whole lot of fun nudging the car on the teetering point between neutral handling and oversteer. Very nice quality as well.

Cool. Thanks for the feedback!

Michel

I heared the cusco is alot less noisier than the kazz. I'm gonna get the cusco.

Here's part numbers for the FD Cusco LSDs if you're shopping around:



Type RS (spring-loaded cam discs)

1&2 way (preconfigured as 1way) - LSD 165 F

1&2 way (preconfigured as 2way) - LSD 165 F2

1.5&2 way (preconfigured as 1.5way) - LSD 165 L15

1.5&2 way (preconfigured as 2way) - LSD 165 L2



Type MZ (cone plates)

1&2 way (preconfigured as 1way) - LSD 165 E

1&2 way (preconfigured as 2way) - LSD 165 E2

1.5&2 way (preconfigured as 1.5way) - LSD 165 K15

1.5&2 way (preconfigured as 2way) - LSD 165 K2

Cusco---ok

Kaaz----I like it



Stock-----Just fine for me (for now)



I wouldnt say ANY are ANY stronger then the others. Just who said what said he said she said sort of thing. Kaaz are WAYYYYYYYY more popular with drifters in Silvias, and 180s here though for a fact.

No drifitng for me, just road course and drag. Without a doubt, all the aftermarket units from Cusco and KAAZ are of a stronger design. The torsen is nowhere near as tough as a cone/plate setup. This is why many run the 2nd gen differential.