ID this subframe/diff

[charles]

http://cgi.ebay.com/ebaymotors/JDM-Nissan-Silvia-S14-S15-SR20-Turbo-VLSD-Differential_W0QQcmdZViewItemQQ_trkparmsZ72Q3a1205Q7c66Q3a2Q7c65Q3a12Q7c39Q3a1Q7c240Q3a1318Q7c301Q3a1Q7c293Q3a1Q7c294Q3a50QQ_trksidZp3286Q2ec0Q2em14QQhashZitem335163b806QQitemZ220408821766QQptZMotorsQ5fCarQ5fTruckQ5fPartsQ5fAccessories

I've been looking for a S15 HLSD and also need to goto 5-lug in the rear soon.

Just wanted to confirm this diff is the real deal and if I can use these hubs on my S13 spindles.

[WilloW]

I'm thinking S15 reason being that the S15 have the VSS in the pumpkin.

[Umai Kakudo]

The link provided says it is a "JDM Nissan 38311-43M10 VLSD Differnetial w/ Speed Sensor and plug"

It looks identical to a S14 diff and crossmember. The rear diff cover is the same for VLSD and open diffs so you have to look for the orange LSD sticker on the outside or have a picture of the inside to visually confirm.

Viscous LSD's are nearly worthless (especially 100,000 mile used ones) for any performance use as they are designed to keep grandma from spinning out or complaining about noise while driving on the street. Replacement viscous couplings from Nissan cost over $1000 so they are not designed to be services but I have heard of people tinkering with them and modifying lockup using different fluids.

The 5 lug hubs fit on S13 uprights and work with S13 axles without any issues.

If all you need from this is the hubs you might be better off buying the hubs separately and then buying a HLSD with the matching input shafts to install in your S13 diff instead of purchasing and shipping an entire subframe just to get a 5 lug conversion.

http://www.nicoclub.com/articles.php?id=245575

http://www.courtesyparts.com/jdm-helical-limited-slip-differential-silvia-s15-p-228893.html?cPath=1418_5890_8686&

http://www.modified.com/projectcars/sccp_0211_project_nissan_240sx_s13_silvia_suspension/index.html

If your rear wheel bearings are good I believe you can just buy the 5 Lug hub from Nissan and press it in.

http://www.courtesyparts.com/240sx-parts-s14-1995-1998/genuine-nissan-parts/axle-suspension/430-rear-axle/-c-3690_3691_3779_3782.html

PN# 43202 - $140 each

[Tenchuu]

those calipers are not S15 brake calipers. no one would downgrade S15 calipers to S14 unless they were just parting crap out on a wrecked car. i wouldn't touch, it looks confused as well as the seller.

[Epstein]

That is 100% not an S15 subframe. There are a few brackets that are different, plus the S15 runs beefier rear subframe bushings.

That sensor on the snout is for ABS. I'm pretty sure that the S15 uses the same sensor for both ABS and VSS.

[racepar1]

That is for sure an s-14 rear subframe/diff. The s-15 diffs have the speed sensors mounted to the diff cover and the tone rings are on the output shafts. Since that one only has a single speed sensor in the nose of the diff it is not an s-15 diff. I payed $50 for my complete s-14 subframe with diff and axles (open diff), but w/o brakes and hubs.

[WilloW]

Me = failed at S15 dif/subframe identification. Now I know which one is which .

[Epstein]

That is for sure an s-14 rear subframe/diff. The s-15 diffs have the speed sensors mounted to the diff cover and the tone rings are on the output shafts. Since that one only has a single speed sensor in the nose of the diff it is not an s-15 diff. I payed $50 for my complete s-14 subframe with diff and axles (open diff), but w/o brakes and hubs.

None of my S15 HLSD diff setups have ever had the sensor rings on the output shafts.

[racepar1]

None of my S15 HLSD diff setups have ever had the sensor rings on the output shafts.

Then why does the trust/greddy diff cover have the ears for the sensors on it?

http://www.street-power.com/grni24s1dico.html

Regardless of whether all s-15's have those sensors, the ears should be on the cover if it is truly an s-15 subframe.

[Epstein]

OK, just for completeness:

The Trust/Greddy cover has them because the part is universal for all R200's which use that 2-stud rear mounting arrangement. Z32, S14, Q45, a-dozen-jdm-cars-we-didn't-get, R33, R34.

The output shaft mounted sensors are for 4-channel ABS. The S15 (Spec-S or Spec-R) does not have 4-channel ABS. I also just confirmed in the S15 FSM that the snout sensor is used for ABS, and the speedo is fed it's speed signal from the ABS computer.

It was common for Nissan to put ears on diffs that would never see use. The S15 diff did come with ears, but without sensors or sensor rings.

The sensor ring is a separate part, and meant to be pressed onto the output shaft. That is, if the output shaft is stepped and smooth on the inner portion to accept the ring.

I'll post pics this weekend that I took comparing my S14 and S15 subframes. I should also have them measured out as well.

[Bumnah]

I was just about to ask for pictures of you S15 subframe. I'm curious to see the differences.

[charles]

Thanks for the info guys, I guess the search continues for a real deal S15 HLSD.... seems to be only moderately easier to find one than the infamous HICAS steering rack

[racepar1]

OK, just for completeness:

The Trust/Greddy cover has them because the part is universal for all R200's which use that 2-stud rear mounting arrangement. Z32, S14, Q45, a-dozen-jdm-cars-we-didn't-get, R33, R34.

The output shaft mounted sensors are for 4-channel ABS. The S15 (Spec-S or Spec-R) does not have 4-channel ABS. I also just confirmed in the S15 FSM that the snout sensor is used for ABS, and the speedo is fed it's speed signal from the ABS computer.

It was common for Nissan to put ears on diffs that would never see use. The S15 diff did come with ears, but without sensors or sensor rings.

The sensor ring is a separate part, and meant to be pressed onto the output shaft. That is, if the output shaft is stepped and smooth on the inner portion to accept the ring.

I'll post pics this weekend that I took comparing my S14 and S15 subframes. I should also have them measured out as well.

The moral of the story is if the cover does not have the ears on it, it is not an s-15 diff cover. Therefore that is not an s-15 subframe.


/thread

[Epstein]

The moral of the story is if the cover does not have the ears on it, it is not an s-15 diff cover. Therefore that is not an s-15 subframe.


/thread

Only to continue to beat a dead horse, the existence or lack of an S15 diff does not indicate ANYTHING about the subframe. It makes it unlikely, but I wouldn't go sprinkling "therefore"'s all over the place. You can't draw a logical conclusion about the subframe by just pointing at the diff.

That's why my last post was so long.

[Bumnah]

Thanks for the info guys, I guess the search continues for a real deal S15 HLSD.... seems to be only moderately easier to find one than the infamous HICAS steering rack

check zilvia. i saw a hicas steering rack go up for sale only a few weeks ago.

could still get it.

I saw one come up on fa, and i jumped on it.