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LSD Ratios
Posted: Wed Aug 15, 2012 9:22 pm
by BogBoy
Hey
Bidding on a LSD rear end and I hope its the right ratio
How many ratios are there?
Re: LSD Ratios
Posted: Wed Aug 15, 2012 9:33 pm
by Dirtydog
depends what it is.
between safari and terrano i know of these ones:
Safari:
4.625 (safari spirit 2.8 turbo diesel, rare)
4.11 (standard)
3.9 (petrol ones)
Terrano/mistral
4.88 (some diesels)
4.625 (standard diesel as far as i know)
4.375 (unsure what these are in, think later terranos and v6)
i think there were some 5.?? in some of the 4wd vans too.
Re: LSD Ratios
Posted: Wed Aug 15, 2012 9:37 pm
by BogBoy
This is the one I brought
http://www.trademe.co.nz/Browse/Listing ... =501986386Will pick it up tomorrow and hope like hell its the same.
I emailed the guy before hand and he said it was out of a 1992 D21 auto turbo diesel.
Re: LSD Ratios
Posted: Wed Aug 15, 2012 9:41 pm
by Dirtydog
most likely 4.6 or 4.8
Re: LSD Ratios
Posted: Wed Aug 15, 2012 10:18 pm
by sibainmud
4.625 is most common in those years. You will have to pull the diff head out and look for the stamping on the crown gear to make sure. Good thing is they only take half an hour to do, if you know what you are doing. Only need to slide the half shafts out a little way to release the head
Cheers,
Re: LSD Ratios
Posted: Thu Aug 16, 2012 12:55 am
by BogBoy
Can i tighten up the lsd using more shims?
I was going to put new bearings in it too. Just give it a complete
over haul
Re: LSD Ratios
Posted: Thu Aug 16, 2012 1:07 am
by Dirtydog
You sure can, new shims from nissan are around 120 for a kit from nissan. Also read somewhere you can change the shims around to make it tighter too.
Re: LSD Ratios
Posted: Thu Aug 16, 2012 6:25 am
by kiwipete
When I bought my LSD (4.6), I just swapped the crown gear off my old diff(4.

into the LSD diff to keep the ratio's the same. It's the spline count for the axle shafts that matters.
Re: LSD Ratios
Posted: Thu Aug 16, 2012 10:42 am
by Dirtydog
the earlier ones are 31 spline, newer ones are 33 spline, are the new ones same spline as safari axles?
Re: LSD Ratios
Posted: Thu Aug 16, 2012 12:06 pm
by BogBoy
Sweet so even if the ratio is off I can use my pinion wheel?
Re: LSD Ratios
Posted: Thu Aug 16, 2012 12:13 pm
by keithal
BogBoy wrote:Sweet so even if the ratio is off I can use my pinion wheel?
afaik you should use both your crown wheel and pinion as they are a matched set
Re: LSD Ratios
Posted: Thu Aug 16, 2012 12:34 pm
by Dirtydog
yeap just swap the lsd carrier into your diff head. probably easier that swaping your crown and pinion over.
Re: LSD Ratios
Posted: Thu Aug 16, 2012 8:17 pm
by BogBoy
And saves me over hauling the whole axle too?
How tight can you get the LSD's?
Im wanting it close to a locker.......

Re: LSD Ratios
Posted: Thu Aug 16, 2012 8:41 pm
by Dirtydog
if you put in extra plates you can get it really tight, but if your after a locker weld your diff, cheaper, easier.
the problem with using extra plates is they will wear over time.
Re: LSD Ratios
Posted: Fri Aug 17, 2012 3:43 pm
by BogBoy
Hmmm so weld one diff and have one lsd?

Re: LSD Ratios
Posted: Fri Aug 17, 2012 4:12 pm
by Crash bandicoot
or you could look at acquiring the diff from a 1992 R32 nissan skyline GTs-4 had factory 2 way LSD
Re: LSD Ratios
Posted: Fri Aug 17, 2012 4:58 pm
by BogBoy
Crash bandicoot wrote:or you could look at acquiring the diff from a 1992 R32 nissan skyline GTs-4 had factory 2 way LSD
They are the R200 LSD? I already have one but I have brought a whole axle for the 4wd
Re: LSD Ratios
Posted: Fri Aug 17, 2012 6:07 pm
by nismo26
What are you trying to do?
Re: LSD Ratios
Posted: Fri Aug 17, 2012 7:19 pm
by BogBoy
Me?
I have brought a complete disk to disk axle that has a LSD diff in it
The R200 LSD diff is left over from when I was going to put it into my legacy.
I am wanting to tighten up the LSD to the point that its nearly a locked diff.
Re: LSD Ratios
Posted: Fri Aug 17, 2012 7:50 pm
by nismo26
BogBoy wrote:Me?
I have brought a complete disk to disk axle that has a LSD diff in it
The R200 LSD diff is left over from when I was going to put it into my legacy.
I am wanting to tighten up the LSD to the point that its nearly a locked diff.
Go into Cockram Nissan and get a couple of .7mm shims about $10 each put them in, won't take much to tighten it right up, you will have to set the back lash when you put it back in. Shims out of a safari LSD might fit they have the same size crown wheel and pinions.
Re: LSD Ratios
Posted: Fri Aug 17, 2012 10:29 pm
by BogBoy
nismo26 wrote:BogBoy wrote:Me?
I have brought a complete disk to disk axle that has a LSD diff in it
The R200 LSD diff is left over from when I was going to put it into my legacy.
I am wanting to tighten up the LSD to the point that its nearly a locked diff.
Go into Cockram Nissan and get a couple of .7mm shims about $10 each put them in, won't take much to tighten it right up, you will have to set the back lash when you put it back in. Shims out of a safari LSD might fit they have the same size crown wheel and pinions.
Wicked, Now to run the breathers up under the bonnet away from the water.
What oil should I use in the LSD? I was going to use Red line shock proof....
Re: LSD Ratios
Posted: Mon Aug 20, 2012 9:14 pm
by charo249
The clutch plates and shims inside LSD Safari, Terrano and Navara diffs are all interchangeable. Can add shims or extra clutch plates to make tighter I have an extra clutch plate each side and my truck almost behaves like it has a locked rear diff. However as others have pointed out the tighter you make it the faster it will wear.