My Diff - Possibly On Its Way Out

[SiR_RB]

Guys noticed for a while now, especially after going to the drags that if I'm cruising and lightly accelerate up to speed I get a whine coming from the rear, if I pop it in neutral the sound goes away

I'm guessing my diff is on it's way?

How much does it cost at an estimate to rebuild the stocker? Or is it time for an aftermarket jobby and rip skidz

[Missileman]

crown, pinion, bearing and possibly a clutch pack? get a quote from diff specialist then then think about a wreckers diff with warranty and a couple of hours under the car.

Personally I would be inclined to go with option 2

[SiR_RB]

Awesome thanks

[Missileman]

I have no experience with skyline diffs, but most lose the bearings first, then obviously if you keep driving, the crown and pinion eat themselves, and most people do keep on driving.. ffs

complete rebuild is expensive, so a nice little wreckers jobbie, can be a smart choice

[SiR_RB]

It's been doing it for a while, went drags again lol seems to get worse now

On another note I have an early r32 gtr with the "fins" on the diff, and advantage of going later model without the fins ? Like from a late 93/94 model? Or are they all the same

[Missileman]

have you ever changed the oil in your diff?

I know your 32 has plenty of ponies but if it still has the factory oil in it, then that is possibly why it failed and not the extra grunt.

.... My gtst has a finned alloy cover.

Edited April 26, 2014 by Missileman

[SiR_RB]

Changed with motul LSD oil around 10'000kms ago

Worth dropping and trying somfin else? Cheap test before I drop the whole diff and bin it

[Missileman]

na doubt it, 10k is nothing, it will be bearing, which allows enough seperation of the gears to do damage to teeth. You need to talk to someone else who has more experience than me.

[SiR_RB]

Thanks for you help bud

[GTRsean]

Award diff in 7 Hills area are good

Otherwise, replacement diff time.

[SiR_RB]

Yeh that's pretty much it

I'm gonna call terry at award and see what he says

Otherwise il get a replacement and get it checked over

[portaz]

Finned is LSD, i would stick with that if I were u

[SiR_RB]

I thought 89-early 93 gtr is finned and late 93-94 and r33 non vspec is plain cover?

All LSD ?

[portaz]

That's not what I was told cause mine is a late 93 and has finned where as a friends is earlier and doesn't

[portaz]

U could be right I can't copy the link but something about vspec and non vspec and 30 and 31 spline just be careful don't want to give urself a headache and they say finned holds more oil

[SiR_RB]

Mines 89 model with finned cover

Hmmmm not sure

[XKLABA]

Mines 93 and its finned, I have a 90 Nismo spec car diff that is fined also

[GTRsean]

My 92GTR had a finned diff cover too.

[MrStabby]

FWIW my 1990 is finned too.

[SiR_RB]

Just had a look under my mates 94 and it's a plain cover, so assuming the 32 spline, ie 33 gtr non vspec item