Rear End... ?Bind?

[joebresson]

I recently picked up a 94 gts25t about a month ago now and within the last two weeks the car has developed an issue within the rear end of the car during low speed corners (less than 20-30kph) but most noticeable when turning onto an intersecting road or backing out of the driveway and pulling forward. what its doing is hard to describe but to me It almost feels as though the rear diff is binding up or SIMILAR to what driving a car with a welded diff feels like. The part that's messing with me is any corners or curves anywhere above that 20-30kph mark the car doesn't do anything strange. there are no noises, vibrations, or clunks from the rear end. is it possible that something like this could be caused by the Hicas rack? this is my first skyline and really don't have any reason to believe I have a bad Hicas unit but again I'm new to skylines and still relatively unfamiliar with the Hicas system. I've been in a handful of vehicles with bad diffs or diffs on their way out, even rebuilt my fair share. its usually pretty apparent when you've got a bad diff.

I did dropped the fluid the other day and there was no evidence of metal shavings in the fluid whatsoever even fished a magnet around the bottom of the case with no chunks or shavings on the magnet.

I've been trying to search for even a similar issue to mine since I first experienced it with absolutely no luck.

im lost as to what my issue may be and hoping someone can help shed some light on it.

thanks in advance!

-Joe 

Edited June 2, 2020 by joebresson

[GTSBoy]

54 minutes ago, joebresson said:

is it possible that something like this could be caused by the Hicas rack?

No.

 

Question. What diff does it have in it? Stock VLSD shouldn't act the way you describe, but if some arsehat has shimmed it, then it could act incorrectly. If it has a mechanical LSD in it, then the behaviour you describe sounds typical.

Note that it is important that you know what sort of diff you have in it, because stock VLSD does not want LSD oil (wants normal diff oil) and mechanical LSD definitely needs LSD oil.

 

If it's not in the diff, then other causes for the stuff you talk about include worn out CV joints.

[joebresson]

9 minutes ago, GTSBoy said:

Question. What diff does it have in it? Stock VLSD shouldn't act the way you describe, but if some arsehat has shimmed it, then it could act incorrectly. If it has a mechanical LSD in it, then the behaviour you describe sounds typical.

with the exception of coil overs the car is all stock as far as I know, with it being so new to me I havent had a chance to get it on a lift and really check things over. I did notice when changing my fluid (using standard gear oil) that there was a fair bit of rtv sealant that had oozed out from the cover and for some reason on the drain and fill plugs.. so someone has been in there before and I suppose it is possible its been molested. I'm waiting on a bunch of bushings to come In including diff bushings and I plan to open it up and get a good visual of everything while ive got it out. 

I will definitely check my cv joints though, thanks for the advice!