Jasper
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| posted on 10/12/04 at 03:07 PM |
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Sierra LSD's - wot ratio's
Something I should probably know but don't as I've always avoided Sierra parts up till now.
The next project will require at least a 3.92 diff (but preferably over 4.00), but I want an LSD and rear disk brakes. I'm hoping that theres a
Sierra with this set-up, maybe a 4x4? Want to start looking out for one but want to make sure I get the right one (unlike last time with the wrong
'tina diff). I presume they can handle 225+ bhp ok as well?
If you're not living life on the edge you're taking up too much room.
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James
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| posted on 10/12/04 at 03:13 PM |
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Oi Git Face! 
When I tried to tell you all about this a couple of weeks ago you told me you didn't care as you were fitting a Mustang axle or something batty
like that!
So go away we're not tellin you nuffin!
Oh ok, you did book Sat' night I 'spose.
Sierra 4x4 LSD is only 3.62.
Highest normal Sierra is 3.92 from regular 2.0 non-LSD Sierra.
What you can do is remove the LSD unit and transplant it into the 2.0. Supposedly not too hard to do.
That'll still only give you 3.92 though. The only way I know of to get a higher ratio is to buy a new CWP (crown wheel pinion) from someone and
have that fitted.
They're about 5-700quid though... 
Think I'll try and make one from a chunk of steel and some artful angle grinder work! 
Cheers,
James
[Edited on 10/12/04 by James]
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Hellfire
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| posted on 10/12/04 at 03:16 PM |
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James....
GET OFF THE FENCH WILL YOU!!! 
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James
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| posted on 10/12/04 at 03:23 PM |
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Jasper,
http://www.raceline.co.uk/gearboxanddifferentialframes.htm
These guys sell a 4.44 CWP. £646 though! 
Can't remember who it's made by but I'm sure they do a 4.7 one for it too.
Cheers,
James
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Mr G
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| posted on 10/12/04 at 03:38 PM |
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Why bother transfering the lsd from the 3.62 into the 3.92?
Just pick up a 3.92 lsd (2.0l 4x4 sierra)
XR4i (1982-1984.5)
Non LSD
7' rear
smaller Sierra stubshafts
drum brakes
3.62:1 ratio
Merkur XR4Ti
Non LSD
7.5' rear
smaller Sierra stubshafts
drum brakes
3.64:1 ratio
All XR4x4 V6-powered vehicles
LSD
7' rear
smaller Sierra stubshafts
disc brakes
3.62:1 ratio
Late model XR4x4 w/ 2.0 engine
LSD
7' rear
smaller Sierra stubshafts
disc brakes
3.92:1 ratio
All Sierra Cosworth RWD
LSD
7.5' rear
LARGE Granada stubshafts
disc brakes
3.64:1 ratio
All Sierra 4WD Cosworth & Escort Cosworth
LSD
7' rear
smaller Sierra stubshafts
disc brakes
3:62:1 ratio
Scorpio 24v (Cosworth)
LSD
7.5' rear
smaller Sierra stubshafts
disc brakes
3.64:1 ratio
Any RWD Sierra with any 2.0 engine (non-Cosworth)
Non LSD
7' rear
smaller Sierra stubshafts
drum brakes (disc optional on last Sierras)
3:92:1 ratio
LINKEY
Cheers
G
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ned
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| posted on 10/12/04 at 04:00 PM |
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as said above, the late dohc 2ltr xr4x4 had a 3.92 lsd iirc. There are no standard dif ratio's above this on a sierra, you'd need to get a
custom cwp set from the likes of kam differentials etc. You could put a sierra viscous type lsd into one of these i guess (or perhaps rather the cwp
you buy into a sierra lsd dif) but imho spending that money, you might as well spend a bit more and get a quiafe atb dif to in there and do the job
properly, just don't tell the mrs what it all costs
Ned.
ps just a look and it's ONLY £1150 for a 4.1 or 4.44 dif with a zf type lsd in it!
keep saving Jasper
[Edited on 10/12/04 by ned]
beware, I've got yellow skin
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James
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| posted on 10/12/04 at 04:07 PM |
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quote:
Originally posted by Mr G
Why bother transfering the lsd from the 3.62 into the 3.92?
That'd be the one! Bit rarer tho' aren't they?
Ned,
KAM, that's the guys! They make them for Raceline. They do the 4.44 and 4.7 if you're really keen!
Cheers,
James
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ned
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| posted on 10/12/04 at 04:08 PM |
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quote:
Originally posted by James
They do the 4.44 and 4.7 if you're really keen!
Cheers,
James
yeah, or have an engine that goes past 9000rpm !!!!!
beware, I've got yellow skin
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bob
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| posted on 10/12/04 at 05:48 PM |
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do any of you so called crown wheel and pinion boffins know the ratio of a sierra saphire 2.0 DOHC GLSi with rear discs ?
Just thought i'd ask,and before you ask its not a slipper.
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James
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| posted on 10/12/04 at 06:14 PM |
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I'd guess it's 3.92.
Why?
James
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Mr G
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| posted on 10/12/04 at 06:18 PM |
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quote:
Originally posted by James
quote:
Originally posted by Mr G
Why bother transfering the lsd from the 3.62 into the 3.92?
That'd be the one! Bit rarer tho' aren't they?
Cheers,
James
http://www.locostbuilders.co.uk/viewthread.php?tid=19896
G
[Edited on 10/12/04 by Mr G]
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bob
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| posted on 10/12/04 at 06:50 PM |
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quote:
Originally posted by James
I'd guess it's 3.92.
Why?
James
James i've got that diff in my indy but no tag for ID,was just wondering.
thanks
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Jasper
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| posted on 10/12/04 at 08:11 PM |
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Cheers chaps - so it's the 2l 4x4 sierra back end I want then.
If anybody has one going spare let me know - no rush, any time before next summer will do fine!
If you're not living life on the edge you're taking up too much room.
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bob
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| posted on 10/12/04 at 08:15 PM |
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Dazza will be looking for whole cars soon so we will keep you on mind.
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