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  #11  
Unread 24th May 2018, 03:06 AM
scalman scalman is offline
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Centre of what? Rear diff? Yh i could look some wrx cars for parts so what i need to look here?
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  #12  
Unread 24th May 2018, 03:11 AM
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Centre of the diff you wish to upgrade. WRX's are no good. Older ones came with VLSD in the rear and centre and open at the front. Newer ones came with R180- well, the ADM ones did. You need to find an STI RA type diff and see if it is plated. Otherwise get a Cusco or similar.
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  #13  
Unread 24th May 2018, 08:29 AM
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The EUDM Outback BG has a very good Vlsd described as R160 V1 in this thread :

https://forums.nasioc.com/forums/sho....php?t=2597453
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  #14  
Unread 24th May 2018, 09:19 AM
scalman scalman is offline
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Amazing info in that link.too much even. Shame. Its hard to tell about diffs from outside. Like mine says nothing on it. So if buying diff from scrapyards its so hard to tell ehat it is.
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  #15  
Unread 24th May 2018, 10:02 AM
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I wonder if you can bake a rear VLSD at high temperature to make it bind more.


Seems to work (unintentionally) for the center diff
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  #16  
Unread 24th May 2018, 08:19 PM
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Quote:
Originally Posted by duncanm View Post
I wonder if you can bake a rear VLSD at high temperature to make it bind more.


Seems to work (unintentionally) for the center diff
(ps: this is mostly tongue-in-cheek. )
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  #17  
Unread 24th May 2018, 08:49 PM
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Actually IME vLSDs work very well.

It's almost impossible to tell that they are working, unlike any of the mechanical LSDs, but just occasionally I have felt mine kick in when crossing a gravel spoon drain at the side of a dirt road. That's the only time.

If they didn't work, as some suggest, neither would the AWD in most Subarus.
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  #18  
Unread 24th May 2018, 10:19 PM
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I only appreciated my rear vLSD after experiencing my mates Outback which doesn't have a rear vLSD. My SG with rear vLSD is able to power through section with diagonal wheel spin providing it's not up too steep a hill. It doesn't feel like it's doing anything as you still get diagonal wheel spin, but the car keeps going, while the open diffed Outback just gets stuck and can't get out in either direction. My Forester can nearly always get out in one direction or another.


Is it possible to get to much temperature in the diff that it stops working? Sometimes I find if I get diagonal wheel spin stopping and then a more gentle acceleration gets me out.
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  #19  
Unread 25th May 2018, 12:42 AM
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Yes it is possible, Red, but only by doing burn outs. I've got photos of a centre diff that's been destroyed this way. F'ugly . Came out of a WRX IIRC.

The non-Newtonian fluid inside goes all black and horrible (expands) , and stops being a non-Newtonian fluid ...

I have never heard of one failing in normal use. If it does, it just turns into an open diff.
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  #20  
Unread 25th May 2018, 01:17 AM
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I just find in these sorts of situations a light throttle crawls up while too much accelerator causes excess wheel spin and you stop moving. Not sure if it's to do with rear vLSD over heating or the front right wheel scrambling away. These are the situations where the Forester can keep driving while the open diffed Outback doesn't stand a chance and needs to pick another line.
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