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+-- Forum: Tuning (https://www.superturbodiesel.com/std/forumdisplay.php?fid=6)
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+--- Thread: LSD (/showthread.php?tid=5033)
LSD - sassparilla_kid - 10-18-2013
I want it in my w123, these one wheeled burnouts are lame, and more than once I've almost gotten stuck turning right out in the country if the rear passenger tire isn't on the asphalt and just spins in the dirt. That being said, what can I do? I know there was an uber rare lsd option for the cars that I'm sure I'll never see, so what are these funky lsd things I've seen added to the differential in other threads? Or am I just gonna have to deal with open diff?
RE: LSD - larsalan - 10-18-2013
weld that shit
RE: LSD - sassparilla_kid - 10-18-2013
(10-18-2013, 02:50 PM)larsalan weld that shit
Might need to
RE: LSD - Simpler=Better - 10-18-2013
If you weld it be sure to use solid core wire with gas, otherwise the spatter will kill your operational gears
RE: LSD - swampmonkey - 10-18-2013
its strange that you americans havent got LSD in your differentials :/ you value electric windows, leather and AC while the europeas only value LSD... the differential, not the happy drug.
both 3.27, 3.06, 2.82, 2.65, 2.47 and 2.24 exists as LSD over hear. althou they are expensive if you isnt buying a car, they isnt anywhere near as rare as over the pond...
i think welded diffs are a nightmare, to go from welded to LSD is as night and day, damn it feels good to be able to make quick turns at slow speed without the tires sqeeking and draging like hell.
RE: LSD - sassparilla_kid - 10-18-2013
Electric windows and air conditioning are pointless in my opinion, I would rather have lsd, it seems much more useful
RE: LSD - wolverine - 10-18-2013
It would probably be easier to retrofit something different. I have an 06 GTO diff that I aquired a while back, its got kinda similar mounts but with a little fab work would fit. Id just have to frankenstein the gto and merc axles together. But that would just be a machined sleeve that I would weld between the two (we aint talkin big HP here LOL) and then get them balanced.
You could probably use about anything you could find at a junkyard. The Ford diffs are easy to find and 20 different types of LSDs are available from Summit for cheap.
Or you could just weld the diff. But I think my 240 would just stall turning corners
RE: LSD - bricktron - 10-19-2013
very interesting swampmonkey... did any of these same euromobiles get manual steering too? i like what you said about the preferred options, us americans are stupid.
256 from 01.11.1965 to 30.11.1991 REAR AXLE WITH LIMITED-SLIP DIFFERENTIAL
RE: LSD - DiseaselWeasel - 10-19-2013
Of course!
Power steering had to be ticked right until '82 I think. But it's rarely NOT been ticked, though. And isn't that much nicer to drive, the steering's still "dull" and unresponsive. Neutral scrub radius saying hello 
RE: LSD - sassparilla_kid - 10-19-2013
I want manual steering and LSD, that would be awesome
RE: LSD - raysorenson - 10-19-2013
(10-19-2013, 04:04 AM)DiseaselWeasel And isn't that much nicer to drive, the steering's still "dull" and unresponsive. Neutral scrub radius saying hello
It's kinda necessary with all that caster. Add scrub to all that caster and you'll lift the inside rear wheel.
RE: LSD - sassparilla_kid - 10-19-2013
Where do I get one of these LSD thingies? like half way down the page, and how does it work?
http://www.superturbodiesel.com/std/Thread-MB-300SD-oldtimer?page=2
RE: LSD - swampmonkey - 10-19-2013
(10-19-2013, 01:34 AM)bricktron very interesting swampmonkey... did any of these same euromobiles get manual steering too? i like what you said about the preferred options, us americans are stupid.
al w126/w116 where those rearends origin probably had powersteering, havent stumbled upon any S-klass without P-S, even the low-budget 280SE.
havent stumbled upon any w123s with manualsteering either, althou i might have heard of some, the w115 thou are more common without powersteering.
there is one major issue with manual stearing, you have to turn the stearingwheel like a madman due to gearing, and you still have to fight with the stearingwheel while standing still on asfalt, especially if pressing the breaks.
(it is a tad more direct to the road, and as long as you are moving, not heavy at al. But on snow, to drift, you better be ready for some quick spinning of the steeringwheel)
a friend has a r107 with the 560 engine and dual turbos, due to large turbos and piping, he had to remove the steeringassist-pump, roling the quite large r107, with the powersteering-gearratio but without assist, and 730whp...
(10-19-2013, 11:06 AM)sassparilla_kid I want manual steering and LSD, that would be awesome
get a w115 manual steering box, and a 2:1 duplex thingy, and you should be able to drive sporty, as long as you are not standing still
RE: LSD - raysorenson - 10-20-2013
(10-19-2013, 02:50 PM)sassparilla_kid Where do I get one of these LSD thingies? like half way down the page, and how does it work?
It appears to simply press against the spider gears creating additional friction once they begin to rotate at different speeds. This should be an additive lockup: it will take, for example, 30nm of force to rotate one axle independent of another under all conditions. Compare to the LSD's that came in mercedes that have a multiplicative lockup: The more force put in the carrier by the pinion gear, the harder the spider gears are pressed into the LSD clutches, giving ~30% lockup. In other words, those spring things are turds.
RE: LSD - wolverine - 10-20-2013
(10-19-2013, 02:50 PM)sassparilla_kid Where do I get one of these LSD thingies? like half way down the page, and how does it work?
http://www.superturbodiesel.com/std/Thread-MB-300SD-oldtimer?page=2
They just add preload to the side gears in effect making it "better" than an open diff. Without machining the gears for clutch discs they probably end up just destroying the gears and housing over time. I also dont see a way to get the axle c-clips back in.
Might as well just weld it
RE: LSD - winmutt - 10-21-2013
Those LSD packs wear and break, even though Kleeman sells one. It's a lot more money but a Quaife comes with a lifetime warranty, even if you race! You can find 123 compatible lsd's on 116's pretty frequently.
RE: LSD - bricktron - 10-21-2013
very interesting. as nice as it would be to have the quaife, how to ID which 116s have such a diff?
RE: LSD - swampmonkey - 10-21-2013
(10-21-2013, 01:01 PM)bricktron very interesting. as nice as it would be to have the quaife, how to ID which 116s have such a diff?
thats the part im interested in to...
I want a 3.07 LSD, or a 2.82LSD from w126, hopefully without tearing it apart first to see if it has the LSD.
RE: LSD - whipplem104 - 10-26-2013
If you guys want to really do this find the appropriate 210mm differential to fit into a w123 from another car like Winmutt suggested and put the Quaife in it. This is what I am going to do with my wagon eventually. No question. The stock lsd units suck and the cost to rebuild one in parts is pretty high. I think that any early w116 and up 210mm differentials with gear ratios from 2.7- up to 3.07 are compatible with the QDF5v. I would have to go back and double check all the epc cross reference numbers. This is how I ended up using this unit in a w124 is because it was listed for the 500slc. The carrier is the same for around 20 years until the late 90's. I have done many installs and driven hard with these units. They are worth every penny and as already stated do not wear out and have a lifetime warranty. Not that you are going to need it. They used standard gear oil and the lock up is variable from 0-100%.
RE: LSD - Jooseppi Luna - 11-01-2013
Does Quaife sell LSD kits or do you have to buy the whole diff?
BTW, I believe that the 6.9 is the only W116 to have come with limited-slip. Not terribly easy to find -- I have dreams of finding a low-mileage rustbucket 6.9 that I can rob the diff out of and make $1000 on by selling the engine
.Also, is there a way to tell whether or not a diff (say, in a 560) is LSD without blowing it open?
RE: LSD - sassparilla_kid - 11-02-2013
(11-01-2013, 07:25 PM)Jooseppi Luna Does Quaife sell LSD kits or do you have to buy the whole diff?
BTW, I believe that the 6.9 is the only W116 to have come with limited-slip. Not terribly easy to find -- I have dreams of finding a low-mileage rustbucket 6.9 that I can rob the diff out of and make $1000 on by selling the engine
Also, is there a way to tell whether or not a diff (say, in a 560) is LSD without blowing it open?
I saw a 6.9 locally a few weeks ago for $600
RE: LSD - DiseaselWeasel - 11-04-2013
LSDs usually have a tag bolted on the cover.
![[Image: lsd_w126.jpg]](http://jan-wulf.de/wp-content/uploads/2013/11/lsd_w126.jpg)
RE: LSD - Eric78 - 11-08-2013
If you can't afford or find an LSD I'm pretty sure you can get solid spools that can fit in your diff, it'd only cost a couple of hundred & it saves you from potentially destroying an otherwise decent diff.
(11-01-2013, 07:25 PM)Jooseppi Luna Does Quaife sell LSD kits or do you have to buy the whole diff?From what I've seen they only sell the diff centres, but then you're looking at about $1500 even for that, Quaife stuff doesn't seem to have very high recommended power ratings for what you pay.
RE: LSD - whipplem104 - 11-11-2013
(11-08-2013, 09:07 PM)Eric78 If you can't afford or find an LSD I'm pretty sure you can get solid spools that can fit in your diff, it'd only cost a couple of hundred & it saves you from potentially destroying an otherwise decent diff.
(11-01-2013, 07:25 PM)Jooseppi Luna Does Quaife sell LSD kits or do you have to buy the whole diff?From what I've seen they only sell the diff centres, but then you're looking at about $1500 even for that, Quaife stuff doesn't seem to have very high recommended power ratings for what you pay.
Quaife does not have a power limit per say. They will however not warranty damage from other parts breaking around the unit, ie half shaft stubs and ring and pinion. Which you will break long before their unit. I would like to see the car that has enough tire and enough torque at launch to break one of these on here with upgraded axles.
RE: LSD - Jooseppi Luna - 11-11-2013
Oh my... an LSD on STD...
RE: LSD - swampmonkey - 11-12-2013
(11-11-2013, 06:39 PM)Jooseppi Luna Oh my... an LSD on STD...
worked good for me, althou the 2.47 was a tad to high geared for the gearbox.
RE: LSD - Jooseppi Luna - 11-13-2013
(11-12-2013, 10:48 AM)swampmonkey(11-11-2013, 06:39 PM)Jooseppi Luna Oh my... an LSD on STD...
worked good for me, althou the 2.47 was a tad to high geared for the gearbox.
You missed my point
.
RE: LSD - DeliveryValve - 11-13-2013
(11-13-2013, 12:11 AM)Jooseppi Luna You missed my point
You have to remember this is an intercultural board...
.
RE: LSD - Jooseppi Luna - 11-13-2013
(11-13-2013, 10:45 AM)DeliveryValve(11-13-2013, 12:11 AM)Jooseppi Luna You missed my point
You have to remember this is an intercultural board...
.
Duh!
LSD: The happy drug
STD:... ...Google it
RE: LSD - swampmonkey - 11-15-2013
(11-13-2013, 02:45 PM)Jooseppi Luna(11-13-2013, 10:45 AM)DeliveryValve(11-13-2013, 12:11 AM)Jooseppi Luna You missed my point
You have to remember this is an intercultural board...
.
Duh!
LSD: The happy drug
STD:... ...Google it
still dont get the point. do full well know what both LSD and STD might mean, but yeah, assumed you actualy was asking/pointing something out, not playing around with words.
Lysergicaciddiethylamide on a Sexualy Transmitted Disease
happydrug on Klamydia. woho?
Althou it might be my bad as a swede, we don't have any humor
RE: LSD - Captain America - 11-19-2013
I would love some LSD action! Especially since I offroad my car and quite need it! I have the 2.88 diff in mine also but something 2.7-ish would be even better
RE: LSD - hooblah - 11-20-2013
Why not install a diff from another car? There should be plenty of jap cars with LSD's or aftermarket units available. The hard part is finding something with the right ratio. I know Nissan diffs are out of the question as theyre quite high ratio compared to a Merc diff.
If you find something with a ratio of between 2.5-3.0 then do let me know!
Its going to be pretty hard. The easiest option I can see would be a 2.79 from a BMW e36.
Im more tempted to go down the custom route and get some gears made up. This would enable me to go with any diff I want and have exactly the ratio I want. It shouldnt be too expensive either, there are only 2 gears that need to be made.
RE: LSD - Cdk4219 - 11-26-2013
Wow I can't believe all of the replies talking about welding the gears up. All I have to say is that this would be a silly idea on a street driven car, not to mention an IRS equipped one. It is hard enough on a solid axle to turn and maneuver with a spool, but on an IRS car it is brutal on the half shafts and rzeppa (cv) joints. Just setting up an IRS limited slip too tight is difficult on parts, and the diff still has slip built in (100 ft lbs or more). Get yourself an LSD and do it right.