Need Help Selecting VLSD

[BigVinnie]

Alright guys I've been diff shopping for a while.... (Kind of like the term window shopping.) I haven't purchased anything yet and the people at egay are seriously confusing me between the 6 bolt and 5 bolt patterns that come with the diffs, I'm not JDM tight enough to understand the differences, and not to inclined to the differences in the diffs, and I was under the impression that the R200(V)LSD only came in the 5bolt pattern for the s13's in a gear ratio of 4.1 (actually 4.08) ratio.
I also came across what some egay seller was selling an assumed R200 VLSD with a 6 bolt pattern that would be compatible with the USDM s13 axles he had 2 of them one with a 3.8 (really 3.9 as stated from nissan) ratio and one with the 4.1 ratio, I am assuming the seller is selling B.S since the VLSD's came with a 4.1 ratio, and the open diffs came with a 3.8 ratio (is this correct?)
So what I am assuming that I need to stay to the straight and narrow, and that I need a R200 VLSD with 5bolt, and axles with a 4.1 ratio from a (NA 300z)/J30/s14/s13/R32 skyline, and anything other than using an original s13 VLSD R200 diff, I can just use my USDM diff case for a transfer for VLSD's for the R32/300z/J30/s14 models (although the R32 skyline uses 4.3 gear ratio, would this make me faster?)....
Do I have my info correct? I also relied on the information from hybridZ.com.
http://forums.hybridz.org/showthread.php?t=103512

[KA24DESOneThree]

Dude, I highly recommend ignoring the existence of the VLSD, whether your intention is grip or drift. Too many of them have excessive mileage and wheelspin will be your enemy.

I currently have a VLSD and sticky 245s and still have wheelspin problems uh... everywhere. Man, I need to get my ATS carbon in.

[BigVinnie]

Dude, I highly recommend ignoring the existence of the VLSD, whether your intention is grip or drift. Too many of them have excessive mileage and wheelspin will be your enemy.

I currently have a VLSD and sticky 245s and still have wheelspin problems uh... everywhere. Man, I need to get my ATS carbon in.

I completely understand. I was looking to keep the car more as a streetable car and was looking to staying away from clutch types. I also don't like the the prices that the helicals are going for (open diff cases). Especially since the cost has been jacked $150 more than should be (NOW $300 and they use to retail for $150 a little under a year ago OBX brands suck, and I don't believe in chinese manufacturing). I originally purchased a SE 91 240sx that had VLSD installed from the previous owner, and as of right now only the right wheel spins like an open diff and is causing alot of chatter to the right rear suspension as well. The splines were even changed out to use the original axles, and as the parts become older and harder to find I believe that I may be stuck using old parts. Buying a new VLSD from nissan will cost roughly $600 and I don't have the money for it. I may end up going to a pick and pull and looking for a 97 240sx se model diff and swapping out the diff cases, and taking the axles as well.

[dct223]

have you tried using mobil1 75w90 in your vlsd.. when i had a vlsd switching to that made a huge difference...


imo easiest way is to go for a s14 vlsd, 4.016666 final drive, they are 6 bolt outputshaft so no need to swap axels. All you have to do is swap to a s13 rear diff cover and get the s14 diff bolts and bushings that go to the subframe...

not a lot of S14's came with VLSD, so if you go to pick and pull make sure you see the orange VLSD sticker on them... might be covered up from all the oil and dirt but its there http://dygertsucks.home.comcast.net/forsale/diff2.jpg. Another good clue if its a vlsd is that theres an ABS sensor on it...

[cogden]

weld it join the Dark Side... Weld Locd Version 3 or 4

[NemeGuero]

He said streetable

[dct223]

you can street welded, but probably something vinnie isnt looking for..

i thought this whole "stfu just weld it" mentality already passed.... guess im wrong... so annoying whenever i see that phrase

[NemeGuero]

you can street welded, but probably something vinnie isnt looking for..

i thought this whole "stfu just weld it" mentality already passed.... guess im wrong... so annoying whenever i see that phrase

Yah, that's what I meant..

and yah.. I agree about the welded..

[g6civcx]

ATS is going through some corporate merger drama and stopped selling products for the time being.

[BigVinnie]

not a lot of S14's came with VLSD, so if you go to pick and pull make sure you see the orange VLSD sticker on them... might be covered up from all the oil and dirt but its there http://dygertsucks.home.comcast.net/forsale/diff2.jpg. Another good clue if its a vlsd is that theres an ABS sensor on it...

Deffenitely good info. I do recall that J30's/300z share the same R200v diff case/w ABS sensor, most s14's did as well since it came on the better package s14's LE/SE with 5 lug disc/ABS. If I use this diff type I may just end up JB welding it closed.
So I guess on the R200 non VLSD diffs all the same diff cases were used for the s14's. S13's used 2 different cases one was strictly for open diff while the other was for viscous. I will defenitely look for a VLSD sticker. Also good to know that the s14's used the 6 bolt rather than the 5bolt.
When I go to the wrecking yard I will mostly look at LE/SE model 5 lug disc with ABS since VLSD came standard on those models....
What do you think about using the R32 R200V with a 4.36 final drive? I will probably be shifting gears sooner, but it should improve my 1/4mile time... Yes/no?


weld it join the Dark Side... Weld Locd Version 3 or 4

I thought you knew.... I am the dark side......
I don't want welded , it skirts to much around corners, cops would think it's wreckless driving.
VLSD is more for me even if I go around corners I don't want both wheels spinning and grabbing too much traction unless I am on WOT.
I may consider a 1.0 or 1.5 clutch type diff but when time equals money I still lose on installig it. Gauging and installing the diff takes time, and at the cost it is already it's almost a loss out of my pocket. VLSD diffs are a dirrect install, just unbolt, and then bolt the other in and use the diff case.

[dct223]

you can just cut the wire to the abs sensor and leave the sensor bolted on, no need for JB weld

that final drive on a KA should be pretty nice... might be wasting a lot of gas on freeway... but hell youll be accelerating like a mofo

again.. dont think vlsd came standard on SE/LE cars, ive seen plenty of SE/LE's with open diff... the ABS w/vlsd package was a 1200 dollar option from nissan (i have my window sticker =D)

[S14DB]

Hlsd ?

[mbmbmb23]

What do you think about using the R32 R200V with a 4.36 final drive? I will probably be shifting gears sooner, but it should improve my 1/4mile time... Yes/no?


CA18DET VLSD has the 4.36 VLSD but it's 5 bolt output shafts so get the axles included when you buy it or get the 5 bolt J30 axles (pre 95?) from a junkyard.

[NemeGuero]

Helical sucks balls for getting sideways

[S14DB]

Helical sucks balls for getting sideways
Wait, what does he want to do with his car?

[orion::S14]

Vinnie...see here, it might fill in a couple holes for you:

www.KA24DEvelopment.com/vlsd.html

...you can probably just skip to the summary at the bottom, to see what fits.

- Brian

[NemeGuero]

He loves him some doughnuts...

[Silverbullet]

if you truely have your heart set on a VLSD, get one from an Infiniti J30. Most likely those weren't driven as hard as Zs or S13/S14s since it was a luxery family sedan. They bolt right in.

[BigVinnie]

Hlsd ?

I was considering an s15 HLSD. I didn't know too much about it, but supposedly it is used in a r200 (OPEN DIF CASE), with the 6 bolt pattern which would make it a direct bolt in. But like I said earlier I'm not that JDM tight and I haven't actually seen the diff case myself so it is all speculation and hear say too me. I also don't know what the ratio is. I've also been told that the helical reacts more like a 1.5 way rather than a 1way clutchLSD.

CA18DET VLSD has the 4.36 VLSD but it's 5 bolt output shafts so get the axles included when you buy it or get the 5 bolt J30 axles (pre 95?) from a junkyard.

Correct, but still too much work.
I believe the R32 diff would be a direct bolt in with a ABS drive shaft, and no need for axles using the 6 bolt pattern. Same gearing and NISMO sells this particular diff, as well as the 5th gear ratio from the CA transmission. Great gearing to use for low HP output engines under 250HP, great for 1/4mie times.

Vinnie...see here, it might fill in a couple holes for you:

www.KA24DEvelopment.com/vlsd.html

...you can probably just skip to the summary at the bottom, to see what fits.

- Brian

Thanks Brian no one really somes up what needs to be there. I always thought that the drive shaft would need to be changed, but I wasn't too shure. Good to know all the bolts that I will need also. I like that J30 diff info.

He loves him some doughnuts...

Yes Evan I love doughnuts.....:rawk:

[S14DB]

I was considering an s15 HLSD. I didn't know too much about it, but supposedly it is used in a r200 (OPEN DIF CASE), with the 6 bolt pattern which would make it a direct bolt in. But like I said earlier I'm not that JDM tight and I haven't actually seen the diff case myself so it is all speculation and hear say too me. I also don't know what the ratio is.
Speculation? I have it in my car now and didn't know there was speculation.

[BigVinnie]

Speculation? I have it in my car now and didn't know there was speculation.


Well then you just ended all speculation for me!!!!!!!!!
Does it react like a 1.5way or a 1way? How does the engagement feel? Whats the ratio?

[BigVinnie]

I have decided.......
I will infact purchase a s15 HLSD. It seems to be the most abundant helical on the market and made by the hitachi corporation from what I have read so far (It's 100% japanese manufactured). If well lubricated and lube changed as required they outlast Viscous and clutch types by almost 2X the life span, so even if I purchase one used it is a safe bet that it will last pretty long, (unless some jack ass in Japan was boosting 500HP and fried the damn thing, which is very unlikely).
I will be using Royal Purple synthetic 80w.
They do use the R200 open diff case 6 bolt.
Now all I need is a non ABS drive shaft and it won't be hard to find.
Even if the diff doesn't last to long courtesy nissan ships the HLSD's.
Now all I need to do is find one used for $350 after I get back from Reno and gambling......

[NemeGuero]

You know Helical is resistant to slippery cars, right?

[BigVinnie]

You know Helical is resistant to slippery cars, right?

That depends on the amount of resistance there is, and I've seen 510 owners use helicals and VLSD's from subaru's. As far as I can see, there haven't been many complaints about the OBX helical (which have been used on s13's and s14's), it is almost a copy of the hitachi helical. I don't think there will be that many problems, I will have to find out on the 1/4mile to see how it affects my launch. If my reaction and launch time gains me .8 seconds in the 1/4 mile it will be alot better than no grip with the open diff (broken VLSD) which I have lost almost a full second compared to last year, and my reaction times have dropped to .886, from .3's (maybe I'm just getting rusty).
Now if you mean by slippery cars how the weight distribution is less on the s13 chassis compared to the s14 chassis(or even s15) I'm not to concerned. KA's make enough torque to get both wheels to grip when needed and my understanding is that there is less wheel spin when compared to the VLSD's, helicals engage through the inertia and torque that is brought through the drive train.
I will just have to find out for myself if the helical will engage more like a 1.5 way clutch type or not, since no one has described to me what the feeling of the diff is like.
I will just have to find out....

[S14DB]

You reaction time has nothing to do with your 1/4 mile times. If your concerned with your launch and hooking, you should bee looking at your 60' times.

HLSDs don't lock, they are constantly distributing power.

[BigVinnie]

You reaction time has nothing to do with your 1/4 mile times.

I consider it since infinion calculates my reaction time as part of my 1/4mile time from when the light goes green. If my wheels are spinning and the car doesn't move that would be part of my launch as well as my reaction. My last reaction time was .86 of a second, from last year I had a .3. From last year to this years 60' I've lost between .2~.4 on every run.
Lost alot of time in the 60' with the right wheel spinning with loss of traction.
I ran a 15.32 last year with bolt ons.
This year I ran a 16.12 with bolt ons advance timing an an SAFC, the outside temprature was also high at 99degress. Temprature last year was 87degress.
Stock s14 KA24de's with VLSD run a 16.1, traction in this case is a serious issue.
The air at 99degress is also thinner than it was on my good run at 87 degress, alot of key factors but the point was I ran a laughable 16.1 with bolt ons. Probably not to laughable since I spoke with another s13 owner that says he runs 16.4 with his bone stocker and open diff on really hot days.

[boosteds13]

The timer doesn't start counting until you break the beam. You may lose on the timeslip as it shows the "heads up" winner with the difference in time, but thats it. You can sit at the line for 20 seconds and still run a 16.XX. I watch GNX's do it all day long...they just brake boost off the line and launch the shit out of it cutting 1.3-1.5 60's

[S14DB]

Only the win light includes the RT time. Seen many cars with the faster time loose. Is this an NHRA cert track?

R/T is in your mind. 60' is your car hooking.

[BigVinnie]

Only the win light includes the RT time. Seen many cars with the faster time loose. Is this an NHRA cert track?

R/T is in your mind. 60' is your car hooking.

Yes it is a NHRA certified track. All it is for is the win off the light. 2 practice runs the 3rd run loser goes home, also have to estimate for the closest time estimate it's held every wednesday till october.
Infineon just had D1, it is still shown on the G4 channel.