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Was there ever a LSD fitted to a L series as rear diff option ?

Not as an option, no. The RX Turbo, however, had a LSD as standard.

sublime wrote:Not as an option, no. The RX Turbo, however, had a LSD as standard.

This rings true with me too. The 4wd Vortex XT would have an LSD as well.

Cheers

Bennie

El_Freddo wrote:This rings true with me too. The 4wd Vortex XT would have an LSD as well.

Cheers

Bennie

Don't think so...

There were also two versions of the AWD Turbo Vortices too , one auto, one manual.
Thinking of L Series RX, was the LSD an option or the norm ? The auto version of the RX - the GLTA did not have fitted as standard anyway

LSD was standard on the RX Turbo with the manual only. As you have noted steptoe, the automatic turbo did not have an LSD diff. I suppose Subaru felt the 'automatic' 4wd system would suffice for the auto. Ahhh... Remember the tag line? Subaru - from the land where tomorrow has already arrived!

No idea about the Vortex...

yeah dont think the vortex had lsd, my old one didn't...

Mine doesn't either ...

nor a front LSD ...

I do have the mythical diff lock though

TOONGA

TOONGA wrote:Mine doesn't either ...

nor a front LSD ...

I do have the mythical diff lock though

Interesting. I always thought the AWD vortexes came with a rear LSD standard - every one I've seen at the parts yards that have been AWD always have the rear diff missing as well, hence why I thought it was an LSD. 3.7 ratio diffs are too common to grab one with the gearbox in my eyes...

Cheers

Bennie

The ex JDM disc brake rear end that I got with the matching D/R AWD box for the wagon has the open wheeler 3.7:1 , yet it came with the 18mm stabiliser bar:D
Very rare find these LSD's!
I say one of us go on a world wide hunt and bring back a pallet load for all AUSubaru members;)

There'd be one in the back of twilights RX for sale, maybe one in Discos too !

I do know when I use my diff lock I get extra bind front and back, but after researching a little it seems the vortex LSD was a factory option

this page while rather old is very interesting.

even the wikapedia XT article doesn't say anything about the vortex getting an LSD

I was looking at diffs from other vehicles at the wrecker the other day and with a bit of trickery and magic I think I know of one in the 3.7 range that could be shoehorned into a brumby. However it would need modified CV shafts and fabricated diff housing. Mind you it would open up a whole avenue of lockers and LSD centres for the diff

TOONGA

What diff ratio are the rx lsd?

They were all 3.7:1 but you can change it to whatever you like

So If I'm running a ea82 engine, (not interested in engine swaps) with 14 inch rims a good all round ratio would be 3.9 to compensate and drive the underpowered ea82?

I have obtained a rx rear end with LSD and disc's....I am assuming its a LSD at the moment until I get to have a good look at it, it is missing sticker on the housing

pzs wrote:So If I'm running a ea82 engine, (not interested in engine swaps) with 14 inch rims a good all round ratio would be 3.9 to compensate and drive the underpowered ea82?

The rim size has nothing to do with gearing, the tyre diametre is what changes your gearing.

I've had a 14 inch rim with the stock 23 inch diametre tyre size, and I've got a 14 inch rim with 27 inch tyre diametre. So I guess it's more about the tyre size you want to be running.

But 3.9 would be better with larger tyres over the 3.7 diff ratio

pzs wrote:I have obtained a rx rear end with LSD and disc's....I am assuming its a LSD at the moment until I get to have a good look at it, it is missing sticker on the housing

Lucky fella. I hope the rear diff is an LSD I'll be jealous.

Cheers

Bennie

3.9 is better than 3.7 with std tyres. Are you swapping your gearbox to 3.9 also?

Yes I just assumed that both would need doing?
What diff's did the 3.9 come in?

Just grab the rear diff out of the same car you get the 3.9 ratio gearbox from. If you've only got the box they can be found in the l series, although harder to find these days, or the early liberty, again, some searching needed.

Get the gearbox first as these are harder to find than a rear diff of the required ratio IMO.

Cheers

Bennie

Early liberty...thanks I'll have a look around town and see if I can grab some out of a wreck.
I assume after all the reading I have done, it would be a straight crown wheel swap in front and rear diffs?.
I would split my new LSD and my original gearbox as it only has 130000km on it.

pzs wrote:Early liberty...thanks I'll have a look around town and see if I can grab some out of a wreck.
I assume after all the reading I have done, it would be a straight crown wheel swap in front and rear diffs?.
I would split my new LSD and my original gearbox as it only has 130000km on it.

I was under the impression we're talking about an L series here - correct?

I only ask as the L series gearbox can't have the pinion shaft swapped out like the EJ AWD gearboxes can. Unless you're going to use an EJ gearbox in the L series, if that is the subi you have that we're discussing...

Cheers

Bennie