How can you tell the difference between s13 and s14..
I think i habe a pair of 14 arms but them almost look the same.

 

front or rear? upper or lower? 5lug?

 

I'm guessing that you're asking about FLCAS...not RUCAS. The S14 arms would be longer...but not by much. Just lay them next to a s13 arm...there should be a visible difference. The difference in length is enough to give you crazy negative camber if you don't use the s14 knuckle as well. Thats the rumor anyway...

-Royce

 

Im gonna upload a pic and tell me what you guys think

 

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The 2 with out ball joints are the proclaimwd 14 arms

 

and the one with is your S13 one? I don't know man, but they look like s13 ones to me. Anyone else care to chime in??

 

Well..
My arms were stock but with new bushings.
So they could have used s14

 

??..

 

After a little internet digging for some info for you I've come up with this. Check this article out. The bump stops are the dead give away to which FLCAs you have. Looks like the "s14s" you were sold actuall are s13s. Sorry it took me a little while to find the info.

Swapping S13 FCA for S14 ones? - Nissan Road Racing Forums

Hope this helps.

-Royce