GU LSD - anyone have the same problem?

I thought that's what all LSD's do. Mine always does this (GU patrol), so does my brothers (60s cruiser).

Cheers,

Muzz

LSD's are designed to transmit aprox 50% of the drive being submitted to each rear wheel, while accelerating, regardless of where you are, via clutch plates in the diff.

Unfortunately, the LSD is driven by the accelerator, so, if you dont want it to work, dont push the accelerator.

Peter
Short answer is yes....and mine was engaging in most tight turning situations. The boys at Monaro Off Road put a couple hundred mils of LSD addititive in the diff and hey presto the problem disappeared.......and the LSD still works well. I will say that when they drained the diff before doing this it appeared as if there was a bit of water ingress. This was not unexpected as a couple weeks before I had a bit of excitement in the Tuross River that put my snorkel to full use.
Cheers
Pete

I reckon just be thankful that you have an LSD which works... and WELL by the sounds of it. :)

Nissan LSD's have a reputation for longevity and it's well-deserved. My '91 GQ's LSD is as tight as the day I bought it 8 years ago. That's pretty darn good in my book. Yours should last for many good years....

just sounds like common shudder , where the plates stick and release quicly instead of sliding with resistance, very common with lsd's , usually fixed with a gutfull of new oil (correct type of course) .Sometimes a bit of additive helps as well.

no real drama i'd say. easy fix

Peter

I have the same car and HAD the same problem. My diff use to feel like it was 'grabbing' when cornering on sealed roads and caused a shudder effect as the LSD gripped and let go.

It's all to do with tolerances in the clutch plates. Some are tighter than others and thats the way they come from the factory.
After much discussion with Nissan about this I was told 'the above' and Nissan do recognise it as a drama in SOME cases. The trick is to have it sorted out before you reach 40,000km because Nissan will only cover your diff up to the 40k mark, I was told.

Nissan will place an approved additive into your diff and see if it fixes it. (In my case it did) I have done almost 70,000k's now and no more probs.

If they can't fix it with the additive, apparently they will replace your diff centre???

That's what I was told and thats my experience with this issue anyway.

I was pretty scepticle about the additive because I thought it would hinder the effectiveness of the LSD but in the 'limited' true 4x4ing I have done since the additive was introduced, it seems to be fine.

No diff in a modern car should shudder when cornering IMHO so get Nissan to fix it. You paid for the Warranty!

Cheers

Spent 30 minutes at the delaer late yesterday and I'm pleased to say the problem is fixed. I should have referred it to them earlier but anhow it worked. Quite an amazing difference.

Thanks Nissan

Peter

There has been a lot of info posted re shuddering Patrol Limited Slip diffs over the last few years do a search of the forum, You will find the main problems seem to be LSD oils used and the interval they are changed at.

The 2 most reccomended oils for the GU seem to be the Castrol LS 90 /140 (dont quote me on that best to go back and check)and Penrites Limslip 140 - they are specific LSD oils and have the correct additives and provide better performance offroad. Both company websites should have reccomended oil specs for the vehicle.

hope this helps.

Nissan also used to have a tube of additive for the gq, which was available, to stop the lsd "chatter" when turning, which you added to the diff, was a like a plastic tooth paste tube, havent used any for some time, so cant be 100% sure its still available.

HSV had a similar thing for the VU on range for a similar problem.