VLSD Troubles

[nissandrift]

Basically my problem is me and my freind couldnt get an sr 180sx VLSD w/ N/A z32 axles on my S13. My day turned out to be 9 hours of work and comin out of it missin half a quart of gear oil.

First Problem:We weren't positive on which side the output shafts went with the long end on the passenger side and the short one on the drivers side. When you turned the driveshaft part it spun output shafts the same way and when you held both sides it felt like there was tension like VLSD. But the long side wouldn't go all the way in. We looked at it and decided it looked like they went in the other way and they did, but it acted the same as my open. I looked through the diff with the shafts out and they were diff. So I know the two pumkins were different inside..So do any of you know how the VLSD acts off the car, ie: when the driveshaft is turned do the axles turn the same way or oppisite? Which sides do the Output shafts need to go?

Second Problem:When the VSLD was bolted in and the N/A Z32 axles in, we couldnt get the axles to push in enough to slide them onto the output shafts (seemed like it need bout a half inch). We then tried to bolt up the longer axle, drop the exhaust for more room and slide it in as a whole unit. When we tried the axle would slide in and the pumkin would come about a half inch from having the studs go in to the subframe. What i need to know do the Z32 axles work on S13's. My freind had a theory that S13 axles are the shortest, S14 axles are half an inch longer, and the Z32 axles are half an inch longer than s14's. So the S14's would work on S13, N/A Z32 on the S14, and the N/A Z32 wouldnt work on S13. Anyone have any ideas on this, have 5 bolt 180sx axles, or 6 bolt VSLD output shafts?

Cliff Notes- My car hates me

Steven

[Hijacker]

Z axles will not fit. period. also, that diff probably came out of an ABS equipped car, so you'll probably need to get an ABS driveshaft (they're an inch shorter than non-ABS shafts).

As for the outputs, as long as the outputs are for an R200V, it will fit. The stubbie that doesn't have a c clip on it goes into the passenger side of the diff. The stub with the clip goes in on the driver's side.

For the axles problem, you'll need a J30 axle, or Silvia axles. They're the proper size and use the 5 bolt pattern.

When I bought my VLSD, it didn't come with outputs, but I got lucky and found a set of CA S13 axles (which are 6 bolt) on ebay that had the outputs attached to them.

You can measure the new diff versus the old diff to see fi it is indeed an inch longer (making it an ABS unit) or I believe that the ABS units had a sensor on the front

[nissandrift]

The diff was actually off a non abs car, but thanks for the info on the axles.

[crzycav86]

Not only are the z32 axles too long, but the spline that goes through the hub is too thick.

It seems like you should have researched more before jumping in on this project...

P.S: You can modify your z-axles and s13-axles to work...http://www.gbauto.net/crzycav86/axle_swap.htm

Good luck man.

[nissandrift]

The splines fit perfeclty in the hub, and everything fit except the axles were about a half inch to long. I just talked to my freind who has a non SE S14 and hes currently running the same setup I planned on using (N/A z32 axles w/ sr pumkin). So apperently it can work just maybe not s13. Does anyone know how the VLSD acts compared to open off the car, ie: when you spin one side should the other side turn the same way?

[crzycav86]

You sure they fit perfectly? I've test fitted them before, and they didn't fit well at all.

Anyway, to answer your question, I pose you another question. Based an your knowledge if limited slip differentials, what is supposed to happen when you spin one output shaft?...

The other shaft is supposed to spin IN THE SAME DIRECTION, as well as spin the input shaft. If the other one spins the opposite way, it is acting as an open differential.

[nissandrift]

Yes, my freind is currently running that setup until he can afford a clutch type. I always assumed that both sides would spin the same way. When I had the long output shaft in the passenger side of the diff. they both spun the same way, but the long output wouldnt go all the way in. When we looked at the diff everything pointed to the long output going in the driver side, and everything fit fine. The problem was it acted just like my open diff. with the axles spinning oppisate. I started to wonder if it acted like an open until the viscous fluid heated up.

[Hijacker]

mine acted like any LSD when I had it out of the car. When you spun the companion flange, both output shalfs would spin the same together. Also, if I spun one of the outputs, the other would spin the same direction. And it was stiff and tough to spin (yay for low mileage diffs rebuilt in a new rear end)

[nissandrift]

When I had the output shafts in with the long output on the passenger side it felt like I expected a VLSD to act, the long output would not press all the way in. They both fit well with the short output on the pass. side but it acted like an open. Guess I need to figure it out before trying to put it in again.