===== Z31 driveshaft and other driveline compatability information =====
==== Basic Driveshaft Information ====
All manual transmissions are the same length, so hence all manual driveshafts for two seat cars are also the same length.

Transmissions each have their own unique slip-yoke on the driveshaft, and length for their application:
  * 84-89 Automatic (2 seater)
  * 84-89 NA manual (2 seater)
  * 84-86 Turbo manual (2 seater)
  * 87-89 Turbo manual (2 seater)
  * 84-89 Automatic, 2+2
  * 84-89 NA Manual, 2+2

In addition, the joints are not the same size in the N/A and turbo (at least manual) shafts; turbos are bigger so you cannot simply swap yokes or diff flanges on the shaft. On a side note I have only seen replacement-type joints listed for the turbo driveshaft's joint sizes, not the NA. It's easy to see from this information that if you want to put a turbo manual transmission in a 2+2 car, you will need to have a standard turbo driveshaft lengthened (re-tubed) or a custom unit made

There are two diff flanges: \\
84-86 - 38210-Y0800 - rectangular bolt pattern \\
87-89 - 38210-10V00 - square bolt pattern \\

You can swap the differential companion flange on the diff relatively easily with a steering wheel puller. Be sure to re-torque the pinion nut after swapping the flange!

==== More Driveshaft Swapping Information ====
{{http://www.az-zbum.com/images/information.driveshaft.fs5r90a.2.84-86.jpg}} \\
{{http://www.az-zbum.com/images/information.driveshaft.fs5w71c.2.87-89.jpg}} \\
{{http://www.az-zbum.com/images/information.driveshaft.fs5r30a.2.87-89.jpg}} \\
{{http://www.az-zbum.com/images/information.driveshaft.fs5w71c.4.84-86.jpg}} \\
Overall length for 2 seaters: 34" \\
Overall length for 4 seaters: 42" \\
length of slip yokes: 4.125" \\
diameter of slip yokes:
  * FS5R30A - 1.625"
  * FS5R90A - 1.5"
  * FS6W71C - 1.375"
84-86 companion flange: 1.88" and 2.24" for opposite sides \\
87-89 companion flange: 2.25" per side \\

==== Credits ====
Jason84NA2T - http://www.Z31performance.com \\
AZ-ZBum - *Offline* http://www.az-zbum.com \\