LSD???

[SR20Drif]

Does anyone know if the USDM fastback 240's come with LSD?? If so, what are the cosmetic differnces between an Open LSD and a VLSD? How can you tell??

[9240sx]

The only usdm s13 that had Vlsd is the HICAS model.And you can look on the back of the pumpkin and it sould have a orange stick on it,That says LSD.Or you can jack up the back of the car up and both wheels sould spin.If only one does then its a open diff.

[SpeedRacer1]

You could just jack up one rear corner and see if it rotates. If you can spin one rear tire while the other is on the ground it is ana open diff.

And no 1989-1990 240SX's came with vlsd's so you can forget about those automatically.

[TypeS]

mods forgive me, but theres no PM system on this forum and his e-mail is hidden.....

SpeedRacer1, I've been told to contact you for JDM nissan part #'s to sort out a brake issue ive been having. my e-mail is [email protected] in advance.

Oh and to make it so Im not hijacking, wouldnt you be able to still spin the one wheel if one is still on the ground, but you'd have to push really hard due to the viscous fluid? I mean its not welded together or anything

[Hijacker]

the breakaway on the viscous unit is very high. it woudl take a lot of force to get that wheel to spin freely from the other wheel.

just remember open diffs rotate the wheels in opposite directions. One will go clockwise while the other goes counterclockwise. The VLSD will spin both in the same direction

[VitaminT]

Don't forget in most cases you can also look at the rear cover, the orange sticket, but also the fins/design. Someone correct me if I am wrong and the US covers are the same on vlsd and open diff units. I just know the us open diff has just a few fins on the bottom and the JDM vlsd(s) that I have had have many more fins. To me this is sometimes easier than jacking the car up and spinning the wheel or trying to scrape the 10+yr old caked on muck.

[NY S13 SR]

VLSD was an option on 91-94 240SX, it was available without HICAS. All HICAS have VLSD.

Rear cover fins are on open diffs also, you can't tell VLSD from open just by the fins.

It should be hard to turn the axles opposite from eachother, but if the VLSD is worn out / high mileage it will be easy.

Very few non-HICAS S13's have VLSD, I have yet to find one that wasn't swapped in by the owner.

[VitaminT]

VLSD was an option on 91-94 240SX, it was available without HICAS. All HICAS have VLSD.

Rear cover fins are on open diffs also, you can't tell VLSD from open just by the fins.

It should be hard to turn the axles opposite from eachother, but if the VLSD is worn out / high mileage it will be easy.

Very few non-HICAS S13's have VLSD, I have yet to find one that wasn't swapped in by the owner.

So you are saying that the rear covers are exactly the same on open and VLSD? I know the open diff cover has fins but it only has like 8 or 10 or so widely spaced fins.

[Henry G]

Just do the wheel trick..

[NY S13 SR]

We have seen the same cover on both open diff and VLSD, several times now. There seems to be no relation between fins/# of fins and wether it is VLSD or not.

____________________Jeff Hheavythrottle.com

[Hijacker]

jeff's right. I've compared a few of the carrier covers as well, and they all have looked identical.

If you want to be certain that you're getting a VLSD, find an S14 with ABS. You'll have the ABS sensors on it, and you'll need an ABS driveshaft, but you'd need that for the HICAS equipped S13 VLSD too.

[SpeedRacer1]

JDM VLSD's, 5 star flanges, different rear covers...



The interesting thing about JDM differentials is that the 1989-1990 diff's had 6 bolt flanges like the U.S. The 1991-1995 diff's had 5 star flanges that many of us recognize, but the 1996-1998 diff's went back to the 6 bolt style flange.

[Hijacker]

i knew the CA S13s used the 6 bolt stub. That's how I got my stubs and an extra set of axles. I didn't realize that they went back to the 6 bolts. Was that only for the S13 blacktops?

[SpeedRacer1]

It actually didnt go along with the engine change. S13 blacktops came out January 1994. The flange change for manual S13 180SX's occurred in October 1995. Another note, all auto 1989-1998 180SX's came with the 6 bolt flange.

[northstar ninja]

if i am setting up a drift car, would it be wise to just save up for a 2 way ? -g

[SmithSR]

Save up for a mechanical LSD, be it 2 way or other.

Consider how much time you spend driving against how much time you spend drifting to decide which is a real world necessity.

[DrifterBoy240]

i cant tell if i have an open diff or a VLSD ive tried the wheel spin trick but i was confused about it the time and this is another wierd thing to and it wasnt to long ago i did three brake stands and i had my friends watch and they said the first one i did the right wheel spun but not the left and the second time the left spun and the right didnt and the third time both spun i held all three for a good amount of time too but this really confused me but any ways i havent done a fourth yet but yea i have also been doing some parking lot drifting and my drifts to the left are getting better than what they were a few months ago. and the orginal owner (one owner car i bought it with about 92,000miles and its a 1991 240sx non-hicas) didnt tell me much about the car so im lost in wonder land if someone can explain this to me and if i could call a dealership and have them check the vin on it would be a good idea (i have connections with a nissan dealership) all help will be good thanks

[SpeedRacer1]

Tell me the VIN and I will tell you if you have it.

You can lay down two tire marks on an open diff, not something rare. It sounds like you have an open diff though.

[DrifterBoy240]

why dont you tell me how i can tell by the vin and then ill find out if it is an open diff or VLSD

[xekushnr]

if only one wheel was spinning, then its an open diff. the lsd will require both wheels to spin when you are burning out.

[NY S13 SR]

Put one wheel on grass, the other on blacktop. Drop your clutch at 4500 rpm, if you launch forward you have VLSD. If you just sit there you have open diff.

_________________Jeff Hheavythrottle.com

[SpeedRacer1]

why dont you tell me how i can tell by the vin and then ill find out if it is an open diff or VLSD

You cant tell by looking at the VIN, I run the VIN through Nissan and I learn all the options on your car. But if your going to be an a$$ about it then just figure it out yourself.