Project GD Subaru STI Part One- Rebuilding the Suspension

,

The Whiteline trailing arms are adjustable for length so you can set both the toe and camber with them.
Another advantage of the arms are that you can adjust the track width to help fit a larger tire in the wheelwells. Since the camber is adjustable at the knuckle, you can shorten the arms and dial the camber at the knuckle making more room for a bigger tire. The STI has smaller wheelwell than other cars like the Evo or Z car and it needs all the help it can get to stuff a big tire in the small space.
We replaced the trailing arm bushings with these hard Motorsports parts.  Softer parts are available as well.  Note the high quality of the bushings with the OEM style steel sleeves.
The trailing arms with the bushings pressed in place.  We did the teflon tape trick with these as well.
The rear crossmember of the STI can move over 1/2 of an inch under cornering load, especially with sticky tires.  To keep the crossmember from moving we installed these crossmember locks.  They thread into existing holes in the chassis and line up with holes in the crossmember.

2 comments

  1. I have a 2004 STi. Can the hubs and steering rack be just direct replaced with an 05 sti?
    I was looking into following your project fairly closely with my car but wanted to make sure I address any issues native to the 04 to make the path easier.

    Are the engine management quirks mostly addressed once the car is tuned with something like a COBB accessport?

    1. The hubs can be but the rack cannot. However, Whiteline makes rack bushings that work well for these cars. The Access port has been pretty dialed back but is fine for OTS tunes and for strictly following Cobbs Green Initiative upgrade paths. For maintaining smog legality this is really the best way to go. For more advanced stuff ECUtek is the way to go.

Leave a Reply

Your email address will not be published. Required fields are marked *

*
*