Mechanical Or Viscous

[gucio]

hi all

I have an issue with my GTR which i had brought about a week ago, now i know that GTR's came with viscous diffs but how tight are these diffs cause on my car when you turn it seems like the inner wheel is skipping ( it actually sounds like there are some gears grinding) and its worse in reverse.

This didnt happen in my GTSt which had a viscous diff!

Or does my car have a mechinal diff and it supposed to make that sound

Any ideas/advise would be awesome!

[Busky2k]

Sounds like you've got mechanical diffs!! Or a shimmed out to the max viscous (unlikely).

[Duncan]

all gtrs have 2 way mechanical diffs....however they are not tight enough to skip from the factory. So you either have a tightened standard diff or an aftermarket centre (still 2 way since it skips in reverse)

[gucio]

Thanks

So it is supposed to make grinding noises, cause that what is worring me the most?

[Duncan]

hmm well it is hard to describe a noise, the skipping of a tyre sounds like a nasty clunking not a grinding....maybe you need someone to have a proper listen?

A mechanical diff doesn't really lock except under load so if you are neither accelerating nor braking while you turn the noise should stop.

[gucio]

Thanks but the grinding noises ending up being the wrong type of oil in the diff, can thanks conventries for that one!!

[T04GTR]

mines got a nismo 2 way centre. and it made short work of the rear diff bushes :

under aceleration if you back of a loud thud is heard