REAR ball joint taper: S13 S14 same?

[KnifeForkDriver]

Ok, it is a well known fact that the FRONT ball joints are not interchangeable between the S13 and S14 due to a different taper on the shank. My question here is in regards to the REAR. I have heard of people running S14 or Z32 rear spindles on an S13 with no mention of having to swap the rear ball joints. I have also heard of people swaping RLCA's with no mention of swaping ball joints. I believe the ball joint housing/casing is a different size, but what about the taper on the shank. From what I can tell, I believe both S13 and S14 rear ball joints use the same 9 degree taper (and S14 front as well).

Also, in regards to the front ball joints, I know it is common to press S14 ball joints in to the S13 FLCA for 5lug swaps. My question here is whether or not anyone has anyone ever mesured the difference in the casing size between the S13 and S14 front ball joints. I know for a fact that the S13 front is 1.615" or ~41mm. Is the S14 identical in this respect? ...or is it just close enough to work? I would greatly appreciate it if someone could measure a s14 front ball joint to verify. I have gone to part stores to measure for myself, but the ball joints are all special order.

Anyways, any help here is appreciated. The reason I ask is because I am researching possibly running S14 roll center adjusters on another chassis.

Thanks in advance.

[KnifeForkDriver]

Can anyone confirm this?

Maybe someone who has an S14 with Z32 aluminum rear spindles could chime in? Does the S14 rear ball joint match the taper of the Z32 conical spacer? If so, that answers my question.

All S13, Z32, R32 all have the same rear ball joint (same RLCA too). S14, S15, R33, R34 all have the same rear ball joint (same as front ball joints in case anyone was wondering). Anyways, the only difference I can find is the size of the casing. S13/Z32/R32 rear ball joint is 38mm. S14/S15/R33/R34 rear ball joint is 41mm. Other then that, I believe they are the same, meaning same taper. Can anyone confirm this?

[p0onsta]

I was actually looking up information about this myself, as I would like to change my RLCA ball joints for my S14. There are writeups all over the place to use a B12 front balljoint on an S13 RLCA, but there's no confirmation as such for the S14 RLCA.

Upon scouring google for a bit, I came across this post:
will s13 rlca fit an s14? - Northwest Nissans (http://www.northwestnissans.com/board/showthread.php?t=87953)
And it seems that the rear balljoints between S13/14 are interchangeable, and the differentiation between the 2 models' control arms is the anti-roll bar endlink mount location. Can someone please reconfirm this? I would love to be able to put in 20$ Moog rear ball joints...

[cazman]

OK, to settle this once and for all.
I just measured all the parts you guys are asking about, and some more info that knife already seems to know.

No the rear S13 & S14 ball joints arent interchangeable.

You can thank me with cash donations, I will send you my paypal :naughty:

file:///C:/DOCUME%7E1/TERMIN%7E1/LOCALS%7E1/Temp/moz-screenshot-22.jpgfile:///C:/DOCUME%7E1/TERMIN%7E1/LOCALS%7E1/Temp/moz-screenshot-23.jpg
S13 Front
Taper low diameter 15.8mm
Taper High diameter 18mm
Taper length 19.5mm
Diameter where it presses in 41mm

S13 Rear, R32 Rear
Taper low diameter 15mm
Taper High diameter 18.6mm
Taper length 23mm
Diameter where it presses in 38mm

R32 Front. S14 F&R , S15 F&R
Taper low diameter 15mm
Taper High diameter 18.6mm
Taper length 23mm
Diameter where it presses in 41mm