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Old 03-21-2021, 05:25 PM   #1
Scooby Newbie
Member#: 463763
Join Date: Feb 2017
Chapter/Region: NWIC
Location: Whidbey Island, WA
2002 WRX Sedan
Blaze Yellow

Default 02 WRX with castor difference left and right

I'm about to buy STi lower control arms and a roll center kit to help compensate for 19mm lowering. LCA will add castor so I wanted to see where my castor is first before buying and installing. Stock range is 2.8 to 4.4 degrees. Mine is 3.4 left and 4.3 right. A .9 degree difference seems high to me, but both are within the acceptable range. Should note toe is zero front and back and all 4 corners are -1.5 degrees camber. I wonder if it's because of worn bushings, etc. New LCA's will get me fresh bushings plus the roll center kit gives me new ball joints and tie rod ends. Any thoughts or concerns on the castor difference left to right?
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Old 03-21-2021, 05:30 PM   #2
Scooby Newbie
Member#: 301042
Join Date: Nov 2011
Location: UK

Slack the 2 x bolts on the front control arm rear bushings - lever bushing forward and outward to increase caster or rearward and inward to reduce caster.
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Old 03-21-2021, 11:41 PM   #3
NASIOC Supporter
Member#: 107618
Join Date: Feb 2006
Chapter/Region: Tri-State
Location: NY
2006 WRX Wagon
2009 FXT


pretty much what 2pot said above.

when you install your new arms, push the rear bushing housing out and back when you tighten to the point where it won't move. that'll give you max caster on each side.

a little tricky to even out left and right. your alignment shop should be able to adjust for you on the fly during adjustments. it's atypical though unless it's a shop worth their salt.
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