View Full Version : LSD questions...
:D Hi everyone,
I have a 92 200sx and I'm not sure what type of LSD I have (if any!). If I do have one, isn't it a Viscous one? These aren't good for drifting at all? Are they? Does anyone have any idea of what LSD I could fit on my S13? What about the S14 LSD is that a clutch type LSD? Or do I need something like a cusco LSD?
Could someone please list the LSD's available, and what Price they are at? If you have one fitted, what is it like to live with?
Lots of questions, I know. But need to research in order to buy Thanks in advance,
-MiRoDriftR :wave:
on a 92 car you should have the standard Viscous LSD - better than an open diff for drifting, but not as good as an aftermarket one obviously :)
voodoo_melon
26-05-2004, 21:16
vlsds are ok to start with but as the goop inside it heats up it turns into an open diff :rolleyes:
S14's also have vlsds, but the manual has longer gearing. You can swap the s14 manual diff into an S13 if you use the backplate off the s13 diff.
A 2way diff is best for drifting, but then is probably also the hardest to drive normally.
NewClearBomb had a stiffer vlsd made out of an old s14 diff which was good iirc, not sure how much it cost though.
vlsds are ok to start with but as the goop inside it heats up it turns into an open diff :rolleyes:
S14's also have vlsds, but the manual has longer gearing. You can swap the s14 manual diff into an S13 if you use the backplate off the s13 diff.
A 2way diff is best for drifting, but then is probably also the hardest to drive normally.
NewClearBomb had a stiffer vlsd made out of an old s14 diff which was good iirc, not sure how much it cost though.
When you say that a 2 way diff is probably the hardest to drive normally, what do you mean by that? Is the front end naturally more tail happy? or? :confused: :)
How did NewClearBomb make a viscous stiffer? Did it act more like a 2 way by doing this? hmmmm.. I do have an offer for a S14a Diff at the moment. Wondering if not I should get it..
In getting an LSD from a 14a, how would that change from the standard unit I've already got in? In terms of the way the car handles sideways and on the road?
cheers..
-Milosz
voodoo_melon
27-05-2004, 11:53
A 2 way lsd also limits the slip in deceleration as well as acceleration whereas 1way is acceleration only, not sure about a 1.5way. Have a search round the board and the net for a better description :wack:
NewClearBomb had the viscous part of the diff taken out and had the goop in it replaced with thicker stuff. I will try and find some of the posts about it...
Not sure about the differences between s13 and s14 diffs except the gearing, someone else might though...
http://www.sxoc.co.uk/vbb/showthread.php?t=80015&highlight=lsd for some stuff about an uprated vlsd.
Thanks mate :) Some helpful knowledge gained :thumbs:
A 2 way lsd also limits the slip in deceleration as well as acceleration whereas 1way is acceleration only, not sure about a 1.5way. Have a search round the board and the net for a better description :wack:
NewClearBomb had the viscous part of the diff taken out and had the goop in it replaced with thicker stuff. I will try and find some of the posts about it...
Not sure about the differences between s13 and s14 diffs except the gearing, someone else might though...
http://www.sxoc.co.uk/vbb/showthread.php?t=80015&highlight=lsd for some stuff about an uprated vlsd.
How did NewClearBomb make a viscous stiffer? Did it act more like a 2 way by doing this? hmmmm.. I do have an offer for a S14a Diff at the moment. Wondering if not I should get it..
you called? :)
I have a load of information I will post up soon about this but haven't had the time recently, but very briefly:
Yes, exactly right. I had a guy develop a viscous coupling for the S14 LSD that is over 600% stiffer.
It does act like a 2-way as it's not clutch based and effectively works all the time.
You need an S14 LSD in order to do this and need to arrange removal and subsequent refitting of the viscous coupling yourself.
Price will be about £400 with you supplying the viscous coupling to be uprated, turnaround times should be around a week.
I've also negotiated getting these done 1 at a time so a group buy isn't necessary anymore although it might drop the price a little :)
interested? :)
astraboy
31-05-2004, 16:35
As you know I am always interested in this.
If you can get it one at a time I will be up for doing it.
Keep us informed mate.
astraboy.
Definetly interested. But first I'd have to buy a S14 Diff.. Wouldn't have enough cash til after summer though, about september time. :) Hope that this service will still be available... Cheers!
you called? :)
I have a load of information I will post up soon about this but haven't had the time recently, but very briefly:
Yes, exactly right. I had a guy develop a viscous coupling for the S14 LSD that is over 600% stiffer.
It does act like a 2-way as it's not clutch based and effectively works all the time.
You need an S14 LSD in order to do this and need to arrange removal and subsequent refitting of the viscous coupling yourself.
Price will be about £400 with you supplying the viscous coupling to be uprated, turnaround times should be around a week.
I've also negotiated getting these done 1 at a time so a group buy isn't necessary anymore although it might drop the price a little :)
interested? :)
By the way, does it matter if its a S14a Diff or the newer S14 diff?? Just curious.. Cause I might get one, then send it too you for the jobbie while having my S13 diff installed.
NewClearBomb: YOu said that it acts like a 2 way LSD, does it have the same drawback as one? How often will your uprated LSD need to be overhauled? What kind of performance will I expect to get while drifting/driving everyday? "£400 with you supplying the viscous coupling" The viscous coupling I assume is the S14(a) LSD? right?
Thanks
-MiRoDriftR
A 2way diff is best for drifting, but then is probably also the hardest to drive normally.
Can anyone give a reason for this?
Can anyone give a reason for this?
The car will be alot more tail happy and harder to drive smoothly through a corner without the back stepping out. Slowing down will also cause more engine braking effect than usuall and possibly lockup the rear wheels.
Dunc.
it doesn't matter if it's S14 or S14a as long as you get the same one back :)
When I say viscous coupling, I'm not talking about the whole VLSD unit, just the part inside it shown in red below
http://www.newclearbomb.com/sxoc/VLSD.gif
Whilst it's not a big job, your average car enthusiast will not have the tools or expertise to take apart a diff and put it back together properly.
As a guide, I paid a gearbox place £180 to take my old diff off the car, take it apart and replace the viscous coupling for an uprated one and refit.
The car will be alot more tail happy and harder to drive smoothly through a corner without the back stepping out. Slowing down will also cause more engine braking effect than usuall and possibly lockup the rear wheels.
Dunc.
So NewClearBomb: How different is your uprated unit in terms on its handling characteristics on the car? Does it have the Benefits of Viscous, and Clutch type?? Or will there be drawbacks in fitting this new unit compared to Viscous? Explain? :D
Also, if you feel it's as stiff as it can go [in the dry], won't this turn any car into even more of a handful in the wet?
very briefly... since having the uprated diff fitted I had no unannounced or unpredictable handling (I drove the car to work daily for 2 months) but then I don't push the car that hard when driving on the road. It was fine in both wet and dry. Understeer doesn't seem to have increased like I understand it does with a welded diff.
The problem lies (and I'm speaking theoretically here as I don't have experience of it happening) if you are driving fast on a normal road and are really pushing the car. Under these circumstances you may find that you get pronounced lift off oversteer which you probably don't want. This will be the case with all 2 way LSD's, mechanical or viscous.
From my experience I would say that this uprated VLSD has the same handling characteristics as a good mechanical 2way LSD, but isn't noisy and clanky like a mechanical one and can be fitted by anyone with a knowledge of diffs/gearboxes as it's essentially the same as the standard item in terms of fitting.
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