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LSD or non-LSD that is the question

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Old 23-07-2007, 09:05 PM
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Rippers
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Default LSD or non-LSD that is the question



Cheers guys
Old 23-07-2007, 09:08 PM
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glancy2081
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sure a slipper both shafts turn same way mate maybe wrong though
Old 23-07-2007, 09:16 PM
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cjwood555
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From my limited theoretical knowledge and total lack of experience with sierra diffs....it looks like a straightforward open diff

Chris
Old 23-07-2007, 09:20 PM
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Stavros
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lol! its an open diff, dont care what car its off, its open.

can see an open from a slipper from a mile away
Old 23-07-2007, 10:13 PM
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that looks like a ford slipper as the centre is offset

the way to make sure is to remove the output shafts and, if one is longer than the other, it's a slipper

if they are both the same length then it's not

the big thing bolted to the crownwheel is where the lsd bit goes on these diffs (apparently)
Old 24-07-2007, 07:34 AM
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Originally Posted by Stavros
lol! its an open diff, dont care what car its off, its open.

can see an open from a slipper from a mile away
you're a better man than me then as ford rear diffs like that look practically the same whether open or lsd
Old 24-07-2007, 12:14 PM
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Talking of Diffs, Martoooon was taking the ATB out of the Sierra this morning when he noticed this...




Old 24-07-2007, 12:16 PM
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Not good!

Apparently the diff pictured is not an LSD
Old 24-07-2007, 12:17 PM
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Old 24-07-2007, 12:22 PM
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Can some kind sould pls tell me what exactly I broke and how close I was to breaking something else?
Old 24-07-2007, 12:26 PM
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Originally Posted by Porkie
Can some kind sould pls tell me what exactly I broke and how close I was to breaking something else?
I might be wrong m8 but isnt that the pinion with a tooth missing, colud of been a big disaster if it had smashed anything else inside the diff.

Steve.
Old 24-07-2007, 12:29 PM
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Originally Posted by Porkie
Talking of Diffs, Martoooon was taking the ATB out of the Sierra this morning when he noticed this...
Poor effort Lee, only a single tooth damaged...........must try harder

My Quaife ATB:



Old 24-07-2007, 12:31 PM
  #13  
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that is indeed a tooth broken on the pinion. if that bit of tooth had got between the other teeth of that gear and the one that it meshes to (the crownwheel - the big one on the left in the first picture on the post) it would have broken more of them and you would have no drive from that diff

EDIT: much like doug has done
Old 24-07-2007, 12:35 PM
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The diff is definately open, as the cover is off and I can see inside.
Old 24-07-2007, 12:39 PM
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@ Dan

and thanks Guys!

Is that the Quiafe ATB thats failed, or a Ford part
Old 24-07-2007, 12:51 PM
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Originally Posted by Porkie
Is that the Quiafe ATB thats failed, or a Ford part
It's the Ford part that has failed - your one looks like it's been polished and peened too............so I'm even more surprised that it failed

This pic shows the Quaife part:

Old 24-07-2007, 12:54 PM
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It was Peened and Polished by Bernie at CTS... poo

Great pic! Thanks for that. I can actually see how the CWP fits with a ATB and works now. Had no idea before
Old 24-07-2007, 12:55 PM
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Originally Posted by COMEDY DAN
The diff is definately open, as the cover is off and I can see inside.
Old 24-07-2007, 12:55 PM
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Originally Posted by Paul Ripley
Not good!

Apparently the diff pictured is not an LSD
Ithankyaw
Old 24-07-2007, 04:05 PM
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if its a slipper itle be hard to turn the axle while holding the other 1 still. looks like a normal diff 2 me
Old 24-07-2007, 04:18 PM
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looks like a ford lsd to me
Old 24-07-2007, 05:35 PM
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Looks like a ford lsd to me aswell!
[sierra lsd is totally different to the rst one]
Old 24-07-2007, 06:15 PM
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it is LSD i just done the same to mine
Old 24-07-2007, 06:22 PM
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that is a viscous ford LSD.
Old 24-07-2007, 06:27 PM
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Is there any sure fire way of testing this.

If I turn the pinion both output flanges turn the same way if that helps?
Old 24-07-2007, 06:29 PM
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Old 24-07-2007, 06:34 PM
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Originally Posted by markk
that is a viscous ford LSD.
Nah thats defo plated pal.....

Paul,

Its a standard ford viscous diff....
Old 24-07-2007, 06:49 PM
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Originally Posted by Paul Ripley
Is there any sure fire way of testing this.

If I turn the pinion both output flanges turn the same way if that helps?
turn one of the output flanges, if the other turns the same way its a limited slip diff. if it turnes the other way its an open diff
Old 24-07-2007, 07:00 PM
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Originally Posted by jaimesdna
Originally Posted by Paul Ripley
Is there any sure fire way of testing this.

If I turn the pinion both output flanges turn the same way if that helps?
turn one of the output flanges, if the other turns the same way its a limited slip diff. if it turnes the other way its an open diff
If I turn one of the output flanges the other one turns the same way
Old 24-07-2007, 07:37 PM
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those lsd diffs have one output shaft longer than the other

so eamsure them
looks lsd to me but can't be too sure

the way to test it is to turn the pinion and hold one side output still
if it's difficult to turn then it's pretty much an lsd (or a fubar diff )
Old 24-07-2007, 09:02 PM
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Originally Posted by ian sibbert
Originally Posted by markk
that is a viscous ford LSD.
Nah thats defo plated pal.....

Paul,

Its a standard ford viscous diff....


i concur !
Old 24-07-2007, 09:11 PM
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So is it the same a standard rear cossie diff? i'm proper confused now
Old 24-07-2007, 09:59 PM
  #33  
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Originally Posted by Paul Ripley
So is it the same a standard rear cossie diff? i'm proper confused now
the diff you have pictured in your 1st post is a standard cosworth rear diff which has a viscous lsd as standard.
Old 24-07-2007, 10:42 PM
  #34  
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Thanks people
Old 24-07-2007, 11:13 PM
  #35  
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Originally Posted by Cosworth Rallyesport
Originally Posted by Paul Ripley
So is it the same a standard rear cossie diff? i'm proper confused now
the diff you have pictured in your 1st post is a standard cosworth rear diff which has a viscous lsd as standard.
Yes, but if you want to sell it, it "works" just like a plated diff
Old 25-07-2007, 04:47 AM
  #36  
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Originally Posted by RWD_cossie_wil
Originally Posted by Cosworth Rallyesport
Originally Posted by Paul Ripley
So is it the same a standard rear cossie diff? i'm proper confused now
the diff you have pictured in your 1st post is a standard cosworth rear diff which has a viscous lsd as standard.
Yes, but if you want to sell it, it "works" just like a plated diff
NO IT DOESNT,NOTHING LIKE,
Old 25-07-2007, 06:54 AM
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definately standard ford viscous lsd
Old 25-07-2007, 07:23 AM
  #38  
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so is this 3.64 7.5 diff from a bug eyed scorpio 24v also LSD? (ignore the fact that it's welded)

Old 25-07-2007, 07:45 AM
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no its a standard free running diff. you tell by where the sun gear sits in relation to the crown wheel. if it sticks out its viscous. if it sits just inside its normal unit
Old 25-07-2007, 07:59 AM
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correct, it was free running

but it looked like an LSD to me at first glance when i compared it to my LSD. i didn't see the subtle difference that an experienced pro like you obviously knows about

didn't matter, i was going to weld it anyway


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