legacycentral bbs

Posted: **Mon Jan 28, 2008 8:00 am**

Hey, I have someone interested in using my stock 93 SS (non-LSD) rear differential for their 2.5 RS build?

Question: Could you swap this diff onto a 2.5RS or WRX? I guess there were two different styles of halfshaft and there's a "newer style"...

Anyone know if these will mate and be compatible???

I mean usually it's the other way around - will those cars' parts fit on our cars <grin>

Thanks in advance for the input.

AW

Posted: **Thu Jan 31, 2008 3:52 am**

I sold my 3.90 vlsd to a guy with a 2.5rs. It wont match the wrx tranny though.

Posted: **Thu Jan 31, 2008 9:23 pm**

Interesting. So there is a difference between 2.5 RS and WRX shaft/linkage...Can anyone explain this difference to me? Old style, new style?

Thanks!

AW

Posted: **Thu Jan 31, 2008 10:36 pm**

The wrx has 1.1:1 transfer gears in the tranny, the rs and legacy have 1:1 transfer gears. The rear diff for a wrx is like 3.54 something.

legacycentral bbs

Could my 3.9 diff work on a 2.5 RS or WRX?

Could my 3.9 diff work on a 2.5 RS or WRX?