I'm on the verge of buying 2 Cusco Diffs, one for the front which has an open diff at the moment (6 GSR) and one to replace the AYC Diff.
Today I read the article in the wastegate chatter magazine about the Norris Evo and it was mentioned that the replacement Cusco diffs are very noisey making "metallic knuckle-cracking" noises!
Does anyone know if this is normal after changing to Cusco diffs, if anyone has a Cusco diff fitted can you tell me if it is more noisey than standard and is the ND car unusual in this respect.

If they are much noisier than standard can anyone recommend another aftermarket LSD type diff that can be fitted front and rear for a similar price.

Cheers

 

I think this proves why I don't use this forum much, 2400 members and know one can answer a technical question!

 

There is a break in period with viscous clutch type diffs. I'm not sure about your Cusco, but with my Kaaz, I had to drive in a figure 8 in second gear for fifteen minutes to break in the diff. Yes, chattering noises are common on new vlsds, but the noise went away after a week on my Kaaz.

 

Oh yeah, my diff was EXTREMELY noisy when brand new but after the break in, the chattering wasn't as intense. If you don't want the noise you can get a Torsen diff but I think you know the disadvantages associated with a Torsen.

 

Clive, I think there isn't many that have a diff like that (I think 3171 might have it) and I have to say that it sounds complete bollocks to me to say that these diffs make a loud noise unless there's something wrong with them. I was just too lazy There's also a "cheaper" company in Japan that sells them, Kaaz (I hope I spelled it right) and there's a company called Van Kempen in holland that sells Quaife diffs http://www.vankempen-autosport.nl/
Write to www.takakaira.com and they should be able to give you a selection of diffs. And if you ask really nicely, Claude and I could check for diffs next week when we are in Japan...

 

eh, it seems I spelled it right That's what I call timing, while I was writing my reply, Group_N was writing his
You see Clive, people will answer questions on this board, just don't start whining like an old lady when it doesn't happen on the first day

 

BTW, I use a 2-way differential which works while braking and accelerating so its usually working more than the average well rounded 1.5-way differential. This might be why I had more noise problems in the beginning but I could be wrong.

 

claude just sell the car and buy an evo 7 RS

my 7 is faboulus
i drove my dads 7 with ayc its nice for the old man but no for my driving style

changing diff is to much work and cost so in my opinion go for the 7 RS

andre

 

Andre, I think if you take into account what Claude has done to his car already, spending about 5000 euros to have a centre and rear diff is cheaper than changing the car. Also, I don't think he wants to drive in a gay-looking car...

 

Changing the diff is easy; its replacing the diff fluid every 3000 miles that can get annoying after a while.

 

Cheers guys, I knew my second post would get a reaction

I've already spoken to Quaife, they are based in England and I have already bought a diff from them for my 309 trackcar, but they do not make one for the Evo.

I would be interested in the Japanese company that sell the Kaaz diffs for a good price!

Any info on diffs from Japan would be greatly appreciated, when do you go?

I'll give RC a ring to get info on the Cusco diff.

 

o.k., we're here now and theres' some interesting info concerning the AYC replacement diffs. Initially Cusco only brought out one type, the 148F but now there's also a 448F, the reason being that Mitsubishi replaced the original diff in some cars with a different one cause it was faulty. This is another part of a long list of cover-ups that have been discovered here in Japan. The only way to know which diff you need is to take it out, cause there's is not paperwork about what has been done to what car, Cusco only found out themselves a little while ago. I have no idea what the difference between the diffs is, but apparently a Mitsu mechanic will.....here in Japan