Rx8 slip yoke splines

I am going to try to piece together a drive shaft, it seems like a rx8 manual drive shaft might be about the correct length.

I am struggling to find which slip yoke they use though, if it is the wrong one is it pretty easy to swap in a GM 27 spline like on the manual Colorado and th350's use? 

By counting splines, measuring the ID of the seal and the shaft diameter I was able to find a Spicer 1330 yoke for my CD009 in my truck.  It's supposedly for some 90's Toyota 4x4 but works perfectly.  Summit and a lot of off-roader type retailers have most of that info cataloged and you can sort through slip yokes by a few of those parameters.

Bear in mind that Mazdas since 1984 have staked in U-joints and are technically non servicable.  You can buy replacement U-joints with inner circlips, but the flats on the inside of the yokes are not precision machined, so the joint will run off center.

Also bear in mind- the RX-8 driveshaft is carbon on the manual models.

Teh E36 M3 said:

Also bear in mind- the RX-8 driveshaft is carbon on the manual models.

Came here to write this. The automatics have a classic steel driveshaft though 

Thanks. All that info solves if I want to get a rx8 shaft or not. 

For future google searchers the RX8 carbon fiber driveshaft is 23/25.

In reply to Stampie (FS) :

Not this again 

It's 25 spline.  The two missing splines are not keyed, they are simply there so that fluid can transfer out if the driveshaft has to plunge.  I haven't seen a slip yoke that didn't have that.

It is the same as FD and Turbo II, and FC-up automatics.  Supposedly there is an early Torqueflite 904 slip yoke that fits, I haven't ever seen one.

In reply to Pete. (l33t FS) :

You know one day you and I will sit down and drink many drinks and discuss the ramifications of how we describe yokes.