Suby axle and DOJ cv issue., 25 splines to the diff, 30 splines to the axle. What CV is this? Options

[ruby914]

I put a 02 WRX motor in my 914 and have a MY03 TY754VN2BA trans staged for transplant.
I needed inboard CV’s so I went down to the local pick-a-part and got CV’s off of a 99 Legacy.
One CV was green the other was black. More so the black had ball and cage, the green had the tri roller setup. Both CV’s had the 25 spline count so I felt all was good.
Next, I sent a set of 914 axles with the inner race from the black CV to a machine shop to have them re-splined to fit the inner CV race.
When I got them back they fit great. Problem is the green CV has a different spline count inside the CV. I didn't notice this before.
ID on the green is 9 SFJ 82 NTN A R 3 T 29 splines to the drive shaft "trunnion" (inner race).
ID on the black is DOJ 87 AC NTN 30 splines to the drive shaft.
So my axles were splined for the DOJ 87 AC
Was this a mistake? I have searched the net and can’t find what model cars these fit. Can’t tell if it was proper for the car it came from. I think not.
I would hope to have chosen something common.

Anyone have an idea what cars these come from?
I would like one more DOJ 87 AC to get the project moving.
Maybe I should I re-spline a 2nd set of axles to something more common?

I am a little confused here. I think it was after 04 that the CV had shafts to the trany and the inner race "trunnion" was 30 splines. Did any of you do axles for the 03 and what spline count did you use?

[rnellums]

I just got back from RRC in Moab, and on the way there I had one of the subie CV's come apart. I'm still not really sure how it happened, and nothing that I could see broke, it just came out of the plunge joint. Just wanted to relay that.

-Ross

[DBCooper]

I just got back from RRC in Moab, and on the way there I had one of the subie CV's come apart. I'm still not really sure how it happened, and nothing that I could see broke, it just came out of the plunge joint. Just wanted to relay that.

-Ross

OK, now I'm curious too. Not my car but this same thing, or something very similar, just happened here. The inner CV, a Subaru SFJ (the triangle bearing), just came apart. The car wasn't being hammered, just driven, touched the gas coming out of a right turn and a bang and the car just lost power to the wheels. Coldwater cradle, Sway-a-Way axles with 914 CV's on the outside and the Subaru tri-pod (SFJ) joints on the inside. I don't know if it's the same thing that happened to Ross, but has anything similar happened to anyone else?

My car has Porscharu's inner flange adapters and bus (kombi) inner CV's with 914 outers. We've broken the outers a few times so we know how that goes, but those were broken, it was our fault and we know it, have no doubt about what we did and how, so no question. But never the inners and nothing obvious being done with this car that should cause a failure. Very curious. Has anyone else had similar issues, or some other idea? We can get parts and re-assemble things back as they were, but I'd prefer being able to determine the cause so we can fix it so it doesn't happen again.

[Amenson]

OK, now I'm curious too. Not my car but this same thing, or something very similar, just happened here. The inner CV, a Subaru SFJ (the triangle bearing), just came apart. The car wasn't being hammered, just driven, touched the gas coming out of a right turn and a bang and the car just lost power to the wheels. Coldwater cradle, Sway-a-Way axles with 914 CV's on the outside and the Subaru tri-pod (SFJ) joints on the inside. I don't know if it's the same thing that happened to Ross, but has anything similar happened to anyone else?

Was it the right side joint that came apart?
If so, could it be possible that as the suspension extends, the axle is just short enough (or slid far enough into the outer CV) to pull the triangle bearing out of the cup? (IMG:style_emoticons/default/confused24.gif)
Could test this with the rear jacked up and wheels hanging by trying to force the axle outward and see how far it goes.