Torsen Type 1 or Type 2

cruisin' · Postby **cruisin'** » Fri Jan 05, 2007 9:00 pm

Hi guys,
I'm new to the MX5 scene having purchased my baby (NB SP, daily driver) a few months ago & a forum subscriber for a couple of weeks now, still finding my way around. Really enjoying both the car & the forum & hope to contribute from time to time.
Meantime I'm looking to upgrade my open diff to an LSD for street use & maybe some lightweight club work. Already tried a KAAZ & thought it upset the balance of the car so now wanting to bolt in a Torsen but not sure of the differences between the Type 1 & the Type 2. Anybody out there had experience with these & able to offer some advice as to which is better & the advantages why, any help greatly appreciated.
Cheers Cruisin'

StanTheMan · Postby **StanTheMan** » Fri Jan 05, 2007 10:11 pm

I always thought The type 1 was slightly more agrressive than the type 2
but i'm not really sure if thats the case now.

get onto miata.net

here is some reading for you......
http://forum.miata.net/vb/showthread.ph ... n+type+1+2
what they seem to be saying is they are both almost identical in the way they feel when locking up or perform. But the basic difference is the Type 2 is cheaper to produce

in this thread
http://forum.miata.net/vb/showthread.ph ... sen+Type+2

miata.net wrote:From what I've read, there is only a very subtle difference between Type I and II; noticable if you can detect what trailing throttle oversteer is.

what exactly is he talking about?

so maybe someone else here can enlighten us.

I'd be looking at a guru or Mazspeed.......personally

I have the torsen type 2 fitted to a NA6 i love it. together with some sticky tyres completely transformed the car. I wouln't have a MX5 without any type of LSD nowdays. Next one along will be more agressive than the torsen type 2 though.

Sheck · Postby **Sheck** » Sat Jan 06, 2007 8:12 am

I read somewhere that the type two was made with more pre load (dont know how as its mechanical) but with this it helped with the one wheel off the ground or unloaded scenario. ie it would provide some drive to the wheel that had load/grip instead of just one wheeling.

Try that solomiata site, someone here should have the link, he explains it a good amount i think.

Oh and whats wrong with the KAAZ? Cant you just get your diff guy to pull some preload out of it to suit your driving? Sure they give a little push understeer but you just gotta change the way you enter the corner, try keeping your foot on the throttle a little bit - not accelerating but not off the throttle and the under will go away. Makes you a better driver :mrgreen:

But i'm sure someone here would want to buy your KAAZ off you, is it to suit a 1.8 diff? How old is it? I was thinking about buying a new one soon, but i want real new like, making terrible noises while turning-new :mrgreen:

Dave

Blue94t · Postby **Blue94t** » Sat Jan 06, 2007 9:55 am

I will happily swap my torsen for your Kaaz diff if you want.
I have always preferred the consistency of a clutch pack diff.
Jake

93_Clubman · Postby **93_Clubman** » Sun Jan 07, 2007 10:09 am

[quote=''STM"]

miata.net wrote:From what I've read, there is only a very subtle difference between Type I and II; noticable if you can detect what trailing throttle oversteer is.

what exactly is he talking about?

so maybe someone else here can enlighten us.[/quote]

The miata.net author seems to be suggesting that the difference between type 1 & 2 is the degree &/ or the response time, i.e. a tightening of the vehicle's line through a corner, after easing off the throttle. Btw, the only thing Garrett says about the difference between type 1 & 2, apart from cost, is the "higher bias ratio" of type 2.

cruisin' · Postby **cruisin'** » Mon Jan 08, 2007 10:04 pm

tks for the comments & info guys, doesn't seem to be much difference between the 1 & 2 except the Torque Bias Ratio, which I think relates to the maximum difference in traction the diff can deliver to the wheel with traction versus the slipping wheel. Someone correct me here if I am on the wrong tram ( Melbournite ! ) Torsen's are gear dríven & so don't have any preload, with the exception of the Torsen type 3 which is a torsen complete with conventional clutch pack built in to address the one wheel off the ground issue.
Sorry Sheck but I don't have the KAAZ to sell, returned it to MX5 Factory with about 2,000K's on it ( just run in nicely ) so if are looking for a low mileage KAAZ ................ & let me know if you need MX5 Factory's details.