Help needed with identification of aftermarket L.S.D.

[Mr_procrastination]

Hi

Recently picked up a lsd diff out of a is200 toyota Altezza, was advertised as a trd lsd unit inside, but on disasembly im not so sure.
So here are some pic and Id love some help in working out who it is made by.











This is the only marking of possible identification, and it reads "20540". Ive googled it as many differant ways as I can think of but no real leads.



Note the cam profil, looks to me like a 1-way with quite an agresive lockup. (The rear angle of the cam is not 90%, but I see it as way to steep to produce any seperation force under braking so I dont think this diff is 1.5-way).
One of my main ressons for douting (spelling) this as a trd unit is that their 41301-SE100 part number as listed for the altezza brings up the selictive (spelling ) dif that you can change the pre-load setting on, this is not on the unit I have.
Can seem to fine wether or not the trd unit is 1.5 or 2-way ?




Note the 8 clutch plates on each side,16 total,(not including the pre-load rings), Im pretty sure I came across a web page,(cant find it now) stating that as the number of plates the new KAAZ "Solid" LSDs had for the is200, but although the unit looks very, very similar to the KAAZ ones, KAAZ only lists a 2-way option, no 1 or 1.5-way, and the part number for the KAAZ is DAT2090.





Profile of the cluch plates.




Wouldnt it be nice if the maker just stamped there name in it

Just to note straingly the unit looks just like the Spoon item for the Honda S2000, Who makes them ?

Any help would be great
Thanks
Timon

[Mr_procrastination]

Spoon lsd for s2000 at http://www.inlinefour.com/spoons2lsdki.html



KAAZ Limited Slip Diff Centre Assembly, VT-VY Commodore, at http://www.capa.com.au/ls1_driveline.htm

Interesting isnt it....

My unit does not appear anything like the other major brands i know of or have seen while looking in to this, e.g. cusco, AT...whatever it is.

Ive heard a rummer that the auto had an option of the mechanical lsd ? Peoples thoughts?
Personaly i cant see this as being oem.

[Mr Revhead]

i havnt got one here compare, but that looks like it could be a TRD one to me
41301-RA010 being the part number you are after....
clutch type LSD for sxe10
the selective one is a different unit.

[Dunny]

Do Cusco make one? Could worth a look

[Mr_procrastination]

RevHead,
Now correct me if im wrong, but arent the trd clutch type LSDs selectible from 1.5 to 2-way? by rotating the internal housing?
Can you check that for me?

[Mr Revhead]

RWD ones are 2 way.
which that one doenst look like does it

[Mr_procrastination]

Yea I think its fair to say that this one is a 1 way, or maybe just a 1.1way
I was reading somewhere about getting the housings machined to change the ramp angles, so could just have them machine in 1.5 way in the spaer part of the housing , making it selectable like the cusco items.