ragindave
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| posted on 23/9/14 at 06:08 PM |
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Sierra Diff identification help needed!
Can someone help identify this diff? is it an LSD?
Thank you.
 
Description
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matt_claydon
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| posted on 23/9/14 at 06:25 PM |
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Yes, it is.
To check, you don't have to remove the backplate, you just have to try to rotate the output shafts in opposite directions (with input shaft
free). If it's impossible / very stiff, it's a viscous LSD.
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PAUL FISHER
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| posted on 23/9/14 at 06:37 PM |
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Just looking at it, I can tell you its not a LSD.
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mark chandler
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| posted on 23/9/14 at 06:38 PM |
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Agreed (with Matt) nice and fat behind the crown wheel.
[Edited on 23/9/14 by mark chandler]
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minitici
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| posted on 23/9/14 at 06:47 PM |
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quote:
Originally posted by PAUL FISHER
Just looking at it, I can tell you its not a LSD.
No you are wrong! - That is a Sierra viscous coupled LSD.
 
viscous lsd
The viscous coupling is fitted within the crownwheel split flange.
By the way - the differential is upside down.......
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tims31
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| posted on 23/9/14 at 07:01 PM |
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Some good info on here Dave
Build: http://www.martinsfurybuild.co.uk/
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madteg
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| posted on 23/9/14 at 07:09 PM |
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Looks like a viscous LSD diff to me.
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Dusty
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| posted on 23/9/14 at 07:46 PM |
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Looks just like mine although you take a better pic.
[img]
 
Ho ho. 3.62 written inside. Ford always did this. Handy!
[/img]
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snapper
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| posted on 23/9/14 at 08:30 PM |
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LSD on the left
I eat to survive
I drink to forget
I breath to pi55 my ex wife off (and now my ex partner)
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PAUL FISHER
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| posted on 23/9/14 at 09:05 PM |
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Apologies chaps, I need some new glasses , I new it did not look like my ATB 7.5" LSD fitted in my V8 Westy as you can't see the planet
gears on that.
Just to add the ratio should be stamped on the crown wheel, if not count the teeth on the crown wheel and divide by the number of teeth on the
pinion.
[Edited on 19/05/04 by PAUL FISHER]
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JoelP
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| posted on 23/9/14 at 09:10 PM |
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Sierra viscous works between crown and one shaft, rather than between both shafts as you'd assume.
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mcerd1
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| posted on 24/9/14 at 08:10 AM |
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quote:
Originally posted by PAUL FISHER
Apologies chaps, I need some new glasses, I new it did not look like my ATB 7.5" LSD fitted in my V8 Westy as you can't see the planet
gears on that.
that's because you ATB doesn't have planet gears like that at all - it replaces everything in the case except the crown wheel and pinion
if you open up an ATB it looks like this inside:
and this thread shows whats inside the ford LSD bit (I wouldn't recommend opening your own one to find out!)
http://forum.daxsportingclub.com/phpBB3/viewtopic.php?f=35&t=4305&start=0
[Edited on 24/9/2014 by mcerd1]
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ragindave
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| posted on 24/9/14 at 08:48 AM |
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Thanks for the helpful replies I am picking the diff up on Friday so I have not had the chance to cast my eyes over it yet, it does appear to be
viscous lsd then thats good news.
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