How can I tell if I have VLSD

TurbLu · Sep 14, 2006

Hi guys,

I have been in the build up of a 93 240sx and the previous owner told me that is has vlsd. How can I confirm this?

LongGrain · Sep 14, 2006

jack up the rear end, spin one of your tires, if they both spin the same way you have a vlsd, if they spin opposite ways you dont.

Lith · Sep 14, 2006

I'm not sure if that actually will work LongGrain. For the Viscous type diff to lock up, the wheels need to be spinning at a certain speed. The greater the speed, the more resistance the fluid will build up to oppose that movement and eventually it'll lock up. At least to my understanding.

That's why VLSD's are considered sloppy and very slow in reacting (in locking up) compared to the clutch type LSD's.

TurbLu,
Easiest way to check is to jack up the car and look for an orange sticker on the side of the casing.
or (this is straight from NICO)
Check digit 18 in the model # (not the VIN!). <-- the very LAST number in the model ID (which is stamped on the left hand side on the firewall in the engine bay)

For Feb '94 - July '95: A, C, or E, = LSD

F, or "-" = NO LSD

For July '95 - July '96: A, C, or F = LSD

B, D, or "-" = NO LSD

US S13's didn't come with VLSD's. Canadian 91+ S13's and S14's ALL had VLSD's. So if the previous owner had a canadian car, you have a VLSD or he swapped it in.

S13driftaz · Sep 15, 2006

I believe you could have searched this. Theres about 100 posts on this lol. Not being rude.

Alpha Residence · Sep 15, 2006

wow......just wow.......I'm going to leave it there because I don't feel like getting my flame gear out and ripping someone up.

ChrisCheezer · Sep 15, 2006

bring this to an end before things get ugly....

i have a VLSD stock... only if ur s13 is equiped with super HICAS, and yes ur wheels will spin in the same direction when pushed.

-the vlsd is alright, but if the car has alot of miles maybe you should change it.. or at least change the fluid, once the vlsd gets hot, it acts like a open dif.

Kaldar142 · Sep 16, 2006

i dont think ihave a VLSD but when i powerbraked my car my friends said both my tires were defiently spinning hardcore, and from all the smoke i dont doubt it

ChrisCheezer · Sep 16, 2006

do u have HICAS?!

ot: what the heck is 3d carbon

chinky559 · Sep 16, 2006

um...!?!?!

Kaldar142 · Sep 16, 2006

ChrisCheezer said:
do u have HICAS?!

ot: what the heck is 3d carbon

Haha they're a company for body mods etc, its where i bought the black out panel for my mustang (the piece that goes inbetween the tail lights, i think it looks 10000xbetter now)

BenefitX · Sep 19, 2006

when i jack my car up and spin one wheel , the other one doesnt even move...its a 93 SE too

s13bdafocker · Sep 19, 2006

where on the subject
so i dont know if i have a lsd... when i start to burn out only one tire spins sometimes both tires will spin and if i do a drif i half to stop before the drift and spinn my tires in 1st to get it to lock up or only one tire will spinn dont know if i have a lsd or what or is it just worn out
its on a 1991240sx.se

Alpha Residence · Sep 19, 2006

How about this. If you have a 240 in the US and it's NOT a HICAS model then you DON'T have an LSD. The only way you're going to have it is if someone physically swapped it out.

Maireeka · Sep 20, 2006

I thought if you leave two skid marks when you do a burnout then you have an LSD? 1 mark = normal open diffy?

LayNLow · Sep 20, 2006

Maireeka said:
I thought if you leave two skid marks when you do a burnout then you have an LSD? 1 mark = normal open diffy?

thats true, but sometimes an open diff can leave 2 blackmarks. but usually one is shorter than the other.
but not everyone wants to do a burnout, so its not the best way to tell.
but yes, check for orange VLSD sticker on the diff. or jack up rear with car in gear and spin one wheel, the other should spin. another way is if your changing your diff fluid, take off the cover and look for an open diff carrier. its easy to spot because youll see 4 gears wide open. if you have a VLSD or clutch pack lsd, it will be enclosed for the most part.

Maireeka · Sep 20, 2006

thx laynlow, i didn't realize that even with an open diffy you can leave 2 marks. That's just my ******* way of checkin, hehe.

XEventHorizonX · Sep 21, 2006

Dump the clutch and look for parallel marks.

Stephen R. · Sep 21, 2006

My S14 has an LSD, I dont know what kinda, but I know its got one, but both tires leave nice long marks when I do burnouts out of my parking place in my apt complex, yummy! I'll take pics next time I do it. The last ones went all the way out of the parking area. I hate my apt complex ^_^

mirage · Sep 21, 2006

The best way is to examine the timing belt. If the cogs are 2/100ths of an inch apart then you know for sure that you might have a vlsd.

raen419 · Sep 21, 2006

Initial Drift said:
How about this. If you have a 240 in the US and it's NOT a HICAS model then you DON'T have an LSD. The only way you're going to have it is if someone physically swapped it out.

Not true.
I know of 2 240sx's that were SE models that didn't have Hicas, but had VLSD. One was a friend's, the other was FS at a used car lot. And before you ask, this was long before people on this side of the country started doing ANYTHING to a 240sx.
It was an option from the dealership on SE's, as well as part of the handling package on Hicas equipped cars.

How can I tell if I have VLSD

TurbLu

LongGrain

Lith

S13driftaz

Alpha Residence

ChrisCheezer

Kaldar142

ChrisCheezer

chinky559

Kaldar142

BenefitX

s13bdafocker

Alpha Residence

Maireeka

LayNLow

Maireeka

XEventHorizonX

Stephen R.

mirage

raen419

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