hey i was 2wondering if a 2003 wrx tranny will fit with a sti motor?

 

Yes but yo don't want to do it.

 

why.
what are the effects?
do i need a complete new dirve shaft?

 

The WRX tranny is weak, as in it barely holds stock WRX power (I personally have never had a major issue with it, but LOTS of other people have broken theirs)

So to mate it with an STi engine that makes 70+ more horsies just IMHO doesn't make sense, a lot of the WRX owners put STi trannys in WRX's 'cause its FAR stronger than the glass WRX tranny.

 

thanks a lot for the info
by the way where would i get a relliable sti tranny

 

Never really looked but in looking for clutches found 'dis...

http://www.gruppe-s.com/Subaru/subtrn.htm

Just scroll down a little.

 

Im not sure in this case but i've deff seen 2.5rs transmissions supporting wrx/STi swaps. If you can save yourself the money by all means go ahead if not a 6speed is teh sex.

 

forester xt is a sti motor with a wrx 5spd albeit 4.444 axle ratio

 

Yeah, but the XT motor is only pushing 230hp and 235 lb-ft of torque...

Not a whole lot more than a WRX (well '02, '03, and I think '04MYs). A WRX tranny in a XT makes sense, but if you drop a wrx tranny on an STi engine, baby go boom!