Editing Z31/vlsdInstall php (section)

=== Assembling Hybrid Half Shafts ===

Let’s start with some basic information.

Z31 NA cars came with Tripod-Tripod half shafts, 6-bolt axle stub companion flanges, and an open differential with either a 3.7:1 ratio (’84–’87) or a 3.9:1 ratio (’88–’89).

https://dev.z31library.com/xenonzcar_archive/z31/images/VLSDinstall/tripodtripod.png

Z31 Turbo cars came equipped with Birfield-Double Offset (BDO) half shafts, 4-bolt axle stub companion flanges, and either:

* Open differential (’84–’86) with 3.54:1 ratio
* Clutch type LSD with 3.7:1 ratio (’87–’89)
* Viscous type LSD with 3.7:1 ratio (’88SS edition)

https://dev.z31library.com/xenonzcar_archive/z31/images/VLSDinstall/BDO.png

’92 to Early ’94 J30s: Birfield-Double Offset (BDO) half shafts, 5-bolt flanges, and VLSD with a 3.916 ratio.

Late ’94 to ’96 J30s: Tripod-Tripod half shafts, 6-bolt flanges, and VLSD with a 3.916 ratio.

The R200V (VLSD) can also be found in NA Z32s, ’97–’01 Q45s, and some 240SXs. (Half shafts and ratios for these applications can be found in their respective FSMs.)

There are several ways to make your own hybrid VLSD half shafts. Due to time and cost constraints, I could only attempt one way. Lucky for you, fellow Z31performance members 88SinZ and Bemis shared information on their methods. A big thank you to 88SinZ for Method 1, and to Bemis for Methods 2–4.