vlsd

For the RWD SR20DET cars! Sponsored by Wiring Specialties.
SET240SX
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I ran into a good deal on vlsd's $200.00 + shipping if anyone interested its on the classified board. Just thought i would pass this deal along to some of you guys.


240SXer
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What's involeved in putting an LSD into a 95 240? I want to do it, but I have no clue what I need. Or what I need. Which LSD is good for drag racing? That's mainly what I want. is that the VLSD?

David.

robyc
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good question, which lsd to use?

:jump

robyc
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i have heard that the cluth lsd is the most popular for drifting, next being the viscous lsd, and last being mechanical lsd. Would this mean the mechanical lsd is the best?

Silviagirl79
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yes the vlsd is used for drag racing

240SXer
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Which one would work with a 1995 240 with No LSD and no ABS (yes I know they came together). Which VLSDs could I use that would not require a whole lot of work.

Thanks,

David.

Silviagirl79
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s14 vlsd off a 240

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C-Kwik
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240SXer wrote:What's involeved in putting an LSD into a 95 240? I want to do it, but I have no clue what I need. Or what I need. Which LSD is good for drag racing? That's mainly what I want. is that the VLSD?

David.


Depends on what kind you get. A VLSD with housing should for the most part bolt right up depending on what car it came off of. Any 240sx VLSD will bolt up except that you may need to use your original diff cover if using a S14 diff in an S13 and vice versa. A 95+ J30 diff will also bolt up. Both of these have a longer nose for the ABS sensor and may cause problems with the rear transmission seal. Some have had this porblem while some have not. I opted to use a shorter driveshaft. A Normally aspirated Z32 diff will also bolt up, except you need the output shafts for the VLSD 240. At about $150 each, this is not the cheapest option for a VLSD. But the Z32 diff does not need the use of a shorter driveshaft since the ABS sensors are on the output shafts instead of the nose.

If you go clutch or helical, you need to crack open the casing and replace the diff section. This requires preceise measurements and correct shimming so that the pinion and ring gear line up correctly. If you don't, the gears may wear prematurely or fail. I believe Kaaz requires the use of VLSD output shafts(both from one side). I think they can provide them, but not sure if it's extra. I don't know if you need anything else for other clutch types or helicals.

For drag racing, all will work better than no LSD. Depends on a lot of factors. For extreme drag only cars, a spool or welded diff would be best. Then the Clutch or helical. Clutch types can typically be adjusted by clutch plate configurations. Helicals can be tuned by using different gear angles, but I'm not sure how willing a manufacturer would be willing to do a custom set-up.

VLSD will work, but is rather weak for extreme applications. Still better than an open diff though.

robyc
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so it sounds like the clutch would be best for drag, then the viscous

anyone know the difference in prices?

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C-Kwik
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It really depends. If you're not running a whole lot of power, then you won't need as much lock. But there will come a point, where the limiting factor will not be the diff anyways. I'd still hold a helical over the Nissan VLSD. The MKIV Supras have helical diffs and my friend's with 450 worked quite well. The limiting factor there was more in the tires than the diff. Even a spool or welded diff is limited to how much traction is available from the tires.

As far as clutch being better for drag, I only say that for extreme applications, where you might need a near 100% lock. Clutch types can be easier and cheaper to tune that way. But expect to give up drivability with such an extreme set-up. Personally, I favor helical diffs. Good lock ratio with great streetability.

As far as price, I think Kaaz units can be found as low as $600-$700 uninstalled. Expect to pay at least $150 or so to have the diff installed into the housing. VLSD's can be found in junkyards for about $300. You may need a new driveshaft or you may need to shorten the existing one. If you can find a helical off the S15 VSpec, you may be able to get away relatively cheap, but I don't know about fitment or the gearing. Or you can pay the $1400+ for the Quaife Helical, plus install. Don't quote me on these prices. I'm going off the top of my head.

Emperor
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C-KWIK - the man with all the answers. I have been waiting for someone to explain that to me in a way i could understand for a while. I was thinking about the NISMO LSD as you can see from my sig, but i really dont think i can handle that install with my limited skills as of now. So do you think dauntless' 300$ VLSD is a good price? i wonder about shipping.... i know its heavy. Awesome, but anyways thanks.

Emperor
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Hey also just a question for you, and i know this also has nothing to do with this board, but do you have an SR? and also if you have an opinion on the CA, i was thinking about that since i have zero to no funds. i like to have goals that are somewhat feasible.

Silviagirl79
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I have a 95 240sx with a s13 sr20det in it. Would I need s13 lsd or s14 lsd? S14 right?

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hokiruu
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Yeah s14 would make sense. What I wanna know is: I have a s14 SE. Seems like I have some kinda LSD, but I see One Way, 1.5 Way, and 2Way LSDs for sale. What type of LSD is in my s14? Which of the three types would be suitable for drag and drift and daily driving? I know nothing is good at everything, but which would be a good bet?

240SXer
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Do you have ABS?

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C-Kwik
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Emperor wrote:C-KWIK - the man with all the answers. I have been waiting for someone to explain that to me in a way i could understand for a while. I was thinking about the NISMO LSD as you can see from my sig, but i really dont think i can handle that install with my limited skills as of now. So do you think dauntless' 300$ VLSD is a good price? i wonder about shipping.... i know its heavy. Awesome, but anyways thanks.


$300 is about the going rate for used Nissan VLSD's. As far as swapping the internals yourself, I'm sure it's not difficult to do, but unless you know how to measure the tolerances, I'd leave it to an expert.

As far as running an SR, no, I run a KA turbo.

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C-Kwik
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Silviagirl79 wrote:I have a 95 240sx with a s13 sr20det in it. Would I need s13 lsd or s14 lsd? S14 right?


The S13 diff carriers use a solid mount. If you mount it using the factorty rubber rear mouns on the S14, it may start breaking mounting bolts. I'd stick to a S14, J30 or Z32 NA diff.

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C-Kwik
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hokiruu wrote:Yeah s14 would make sense. What I wanna know is: I have a s14 SE. Seems like I have some kinda LSD, but I see One Way, 1.5 Way, and 2Way LSDs for sale. What type of LSD is in my s14? Which of the three types would be suitable for drag and drift and daily driving? I know nothing is good at everything, but which would be a good bet?


If you have a VLSD, I'd refer to is as a 1 way(.5 + .5). The VLSD never has any amount of lock. It only resists slippage. Cltuch types lock-up to it's break-away point. Helicals lock to a set torque bias.

As far as what is best, just not an easy question to answer. It's subjective as each person may refer one over another. I prefer helical diffs because it works well, doesn't wear, and is transparent during normal driving. Clutch types are good, but some make excess noise when turning. But this is only my opinion. Helicals are expensive brand new...

Emperor
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Thanks C, i thought i remember reading that you had a KA-T. Sorry for the mistake. :thinker

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I am Technoman
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The 95 J30 diff is the best cheapest way to go for your S14. It basicly just bolts right in. Othe than the drive shaft issue.

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C-Kwik
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The S14 VLSD's have the same driveshaft issue. Both diffs have the same outer dimensions since it has an ABS sensor in it.

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S14Life
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Man this stuff is confusing. Say I have a 1989 240SX coupe with a SR20DET in it. All I would do drive it regularly and drift. What diff would be a good choice? And assume there is a budget.

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C-Kwik
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What is the budget? Most aftermarket diffs are probably about $600 or higher. Plus you need it installed in the carrier. I think someone said it was about $150 to install.

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S14Life
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Ok, no budget then. lol

I'm just curious as to what you guys would recomend for that application.

AznRide
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let me get this straight. All I need is the LSD right? Or do I need to get the different driveshaft? This concludes my question...what are all the parts I need for my swap.

I have a 95 240 with S13 redtop.

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drifspecs13
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I have A vlsd from an infiniti M30, I had to use my 240 diff cover. I noticed a nice improvement, however it has a hard time handling the SR20DET power. I previously had my diff welded which was awesome but sucked for daily drivability. For the price I would say its worth the swap. I can leave out of the hole better than an open diff.

AznRide
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can anyone answer my question?

ImportIntelligence
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I run a Nismo clutch type LSD and depending on what oil you put in will depend on the streetability.

Make sure you have a rear shop put it in or you'll end up like me when you bolt up some slicks. Tolerances are mroe important with the more HP you are running.

-S13 DET ( Broken ring gear )

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hokiruu
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CKwik, thanks for the info. That will probably be my first upgrade after my SR and other goodies are installed. I'll probably have to use my KA resell money o buy it cause I'll be poor.

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SkidMark240sx
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Can you guys gimme more info where to get a VLSD for $200-$300 plus shipping. What website or shop to call? Everywhere I look online they sell for about $500 with shipping.


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