front diffs - how many types are there?

[Fusion Ed]

I got a question for you lot! Just took a front diff out of an R, and its a plated LSD. No markings on it or anything else I can identify it by, I just wondered as I know there will be many people here who have seen more of these than me if its likely to be a nismo?/ no idea / other?

 

[Fast Guy]

A picture might help.
There's modena, cusco and Nismo to name 3. I don't know which are plated tho.

 

[cmng]

i have all the 3 with me right now


Cusco

Nismo

Forget to take the modena pic before i install on my car

 

[Fusion Ed]

ok hold tight.

 

[gtirx2]

Real bad pic but i am pretty sure this is a cusco 1-way diff.
If you look in the gtiroz pics its the same as that one so thats what makes me think its cusco?

I would be intrested to see a standard rb lsd front diff as people say some had one as an option,but was it a nismo diff they used or was it a different type?plated or torsion type etc?

 

[Fusion Ed]

 

[gtirx2]

Torsion (modena) diff

 

[Fusion Ed]

Ah ok seems its a cusco one then - thanks!


edit ok now this is confusing haha.

 

[gtirx2]

Think its proberly a nismo but thats only because its proberly the last choice left lol

 

[gtirx2]

Its different that the cusco.

 

[Fusion Ed]

It matches up with cmng one that he says is cusco?

 

[cmng]

that the confusing

which one is cusco which one is nismo ?

my reference is from GTiROZ pic

 

[gtirx2]

I know, it could well be cusco if they did 2 different types but i was going with the box in the pic to confirm the cusco diff?

I would proberly think it is a nismo diff or even an rb diff but like i say i have never seen a pic of an rb lsd which makes me wonder if the nismo and rb lsd front diffs are the same thing?

All the pics above are the only design front diffs i have ever seen for the gtir which is why i think its a nismo diff as i have seen in the past other people with the same diff as you and they was claming it was a nismo diff?But tbh i could be totally wrong!

 

[Fusion Ed]

hmm interesting all the same thanks

 

[gtirx2]

Also what makes me think the cusco one is a cusco diff is that the inner splines on the plates are of the same design as cusco uses today.
It does not have the grooves on the top of the plates but the splines on the inside of the plate are the same.
Also the one i think is a cusco uses the mz type cone plates to preload the diff.

http://www.cusco.co.jp/en/parts_product/products/lsd_typers_typemz.html

 

[gtirx2]

Heres a couple more pics that i have from when i sent them to a cusco dealer to try and get new plates as one of mine is cracked
Just out of intest would any of you guys know where i could get a new plate made as i think they are made of a special material?

 

[Rishi]

Remember that Cusco had an MZ and an RS version of diff for our cars..

 

[dotalot]

What sort of money is in one of these? Take it they make a huge difference on the track??

 

[cmng]

Manage to dig more info from GTiROZ

Cusco got 2 model
one is very similiar with nismo

the one on the left is a cusco and on the right is a nismo front lsd's

Click to view it
i not able to link it to here

http://forum.gtiroz.net/download/file.php?id=6687

 

[red reading]

Heres a couple more pics that i have from when i sent them to a cusco dealer to try and get new plates as one of mine is cracked
Just out of intest would any of you guys know where i could get a new plate made as i think they are made of a special material?

Those concave plates are diaphram spring's ,the preload of those spring's (and the amount of plate's,oil type etc) dictate's the slip/lock up of a plate type lsd;-).

when you rebuild the diff do you have the spec for setting it up? because if you do it wrong it won't work as intended if at all:roll: