S12 R200= longnose R200
S13 R200= shortnose R200

To get an LSD for the R200 longnose, you will need an S13 LSD designed for an S13 OPEN DIFF CASE AND OPEN DIFF INPUT SHAFTS. The S13 open diffs use equal length shafts on both sides, which have the same spline count(29) and length as an S12 half-shafts.

You cannot use OEM VLSD diff unless you use the VSLD input shafts. If use the VLSD shafts, you'd have to make new half-shafts for it to work with the S12 arms. You could maybe use the Z31 VLSD shafts, but those are rare in itself and you'd have more trouble finding those shafts than the Z31 VLSD.

The VLSD uses unequal length input shafts(one side is longer than the other) because that is how the VLSD works. So if you get an S13/S14/J30/whatever VLSD or an LSD designed for an LSD case/LSD differential/LSD input shafts, it WILL NOT WORK WITHOUT CUSTOM HALF SHAFTS. This also includes the S15 HLSD with 30 spline count, because you would have to use those input shafts.

The diagram is on the wiki:

http://en.wikipedia.org/wiki/Nissan_200SX#S12

Thank you sir

So am I correct that the VG30E cars all came with 3.90 gears?

Yes sir

Thanks!

How does the R200 differ from the R200V found in the limited slip diffs in S13/J30 chassis besides the obvious viscous limited slip part. Physically how are they different if at all?

I believe they have a longer snout than the J30 and the S13 rear ends, and so the pinion gear would be different. If I'm putting it the right way. Brewster knows something about Infiniti components, maybe he can chime in and verify or correct me if I'm wrong.

I know that the ABS model S13 has a longer snout as opposed to the non. I wonder if the non ABS diff will fit?

yeah, when i get off my ass and go out to the garage ive have both style diffs in my garage. ill snap some pics.

the non- vlsd differential will fit the s12 diff housing.

the housing, and ring and pinion are different, as well as the output shafts.

What you guys don't really know is which R200s have the 10mm bolts and the 12mm bolts. Or maybe it's just me. haha Anyway thanks to the Z31P member for this image. Supposedly he has the full program for searching up nissan part numbers and whatnot.

well the difference with the open vrs. vlsd differentials is the output shafts.

so if i have an r200 diff can i use an s13 vlsd???

i have an ABS vlsd S14 diff w/6 bolt output shafts. can i use this unit? Anyone know how?

You cannot use the VLSD diff unless you use the VSLD input shafts. If use the VLSD shafts, you'd have to make new half-shafts for it to work with the S12 arms. You could maybe use the Z31 VLSD shafts, but those are rare in itself and you'd have more trouble finding those shafts than the Z31 VLSD.

To get an LSD for the R200 longnose, you will need an S13 LSD designed for an S13 OPEN DIFF CASE AND OPEN DIFF INPUT SHAFTS. The S13 open diffs use equal length shafts on both sides, which have the same spline count(29) and length as an S12 half-shafts.

The VLSD uses unequal length input shafts(one side is longer than the other) because that is how the VLSD works. So if you get an S13/S14/J30/whatever VLSD or an LSD designed for an LSD case/LSD differential/LSD input shafts, it WILL NOT WORK WITHOUT CUSTOM HALF SHAFTS. This also includes the S15 HLSD with 30 spline count, because you would have to use those input shafts.

Hello! May I, even though I'm new,suggest to add some R180 info on the first post also, browsing around I found so much misinformation about it and got really confused.

The info that would be cool to post is the R180 LSD options, such as the old Zs and the Subarus that have this same diff. I KNOW I can find it searching but as I said, while searching probably 80% of what I found was wrong and/or incomplete and/or just guesses.

A listing of diffs and their specs on various Nissan models, from the Z Car Parts Index.

So does it matter what R200 differential ratio I get with my CA18DET powered 200sx? I have options of:

4.11:1

3.90:1

and 3.545:1

From what I can tell the 4.11:1 would give me better acceleration, burnouts, and drifting, and the 3.90:1 and 3.545:1 would give me progressively better fuel economy, and conversly, progressively weakened acceleration.

Can someone fill me in? Thanks!

It is 100% sure that I can use the s12 opencase for S13 LSD opencase?

S13 LSD designed for S13 open case will also fit in S12 case.

Make sense?

Hey guys quick ? anyone know what the pinion angle is on the S12 solid rear?

if this is in the wrong post, im sorry.. would this diff work in our car ? http://cgi.ebay.com/ebaymotors/Kaaz-2-Way-...sQ5fAccessories

or any one the is made for OPEN s13 case right??

Just want to fix some mistakes with this thread:

1. You don't need custom manufactured CV's to fit an S13 or series 1 s14 VLSD diff centre into an s12 series R200.What you need is to blend a LHS S12/Z31 CV with a RHS S13 or series 1 S14 CV. Its just a matter of dismantling the inner CV bearing on each type of shaft and reassembling the S12/Z31 Cv with the S13 or S14 series one Bearing and 6 bolt cover fitted to it. Then the output shaft that slots into the diff can be bolted up to it, (you need to cut 8mm off the end of the output shaft spline using a cut off wheel) and this new hybrid CV shaft then fits into your s12 and operates the viscous diff.

Anyone with an angle grinder and spanners can do this.

The s13 and s14 6bolt CV bearing are a direct swap with the s12/Z31 ones and the CV shaft is the same diameter.

KEY POINT: series 2 s14 onwards diffs (and Z32's etc) use CV's 5 bolt type which have a bigger diameter shaft and splines, so these diffs and CV shafts will not work for an s12 diff!!

2. An mechanical LSd centre to suit an s13 or series 1 s14 6 bolt originally OPEN diff will fit an s12/Z31 housing and work with the NORMAL s12 and Z31 factory CV's no problem, (BUT NOT a replacemnet diff centre to suit a Z32, s14 series II diff as these need bigger diameter splines)

The fact is no one tried yet.

I know welded cars, OBX hlsd one because it's made for 10 & 12 mm bolts, an uk guy which fitted an VLSD from S13 with some mods said above.

Fact is they have tried it I have done it on mine.

Okay, can you clear this up for me please:

The driver's side output shaft has to be cut 8mm shorter on the part that is inside the diff? You also have to swap the CV bearing and cover (?) from an S13 and the whole thing will slide in and work with the internals from a stock S13 VLSD?

All this using a S12's open R200 case?

Will this work using non-turbo Z32 VLSD internals as well? (not the output shafts, just the ring gear, viscous coupling and all that)