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Old 06-09-2015, 10:26 PM   #1
JarHarms
Scooby Specialist
 
Member#: 138994
Join Date: Jan 2007
Chapter/Region: MWSOC
Location: DeKalb-ish, IL
Vehicle:
06 WRX Ltd
02 Forester S

Default STI front cross member info

I had the three versions of GD STI front cross members around to compare. I always wanted to know the actual differences between them. Posting up to share the info in case can help anyone else. Note: USDM left hand drive is the reference point I would be using.

Post#2 2004 STI Cross member complete-front suspension (20101FE200)

Post#3 2005 STI Cross member complete-front suspension (20101FE500 sub -> 20101FE510)

Post#4 2006-07 STI Cross member complete-front suspension (20101SA040)

Post#5 Support arms and Jack plates


My intent was GD STI only, since it could go on forever adding in other versions. Maybe I will consider adding other cross members if I get the info collected up.

AKAs
"Frame assembly-front" = subframe
"LCA" = lower control arm (in this case the front LCAs)
"clamp-gear box pipe" = 2004-07 round clamp
"clamp-gear box pinion" = 2004 square clamp or 2005-07 u-bracket
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Last edited by JarHarms; 06-09-2015 at 11:21 PM.
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Old 06-09-2015, 10:27 PM   #2
JarHarms
Scooby Specialist
 
Member#: 138994
Join Date: Jan 2007
Chapter/Region: MWSOC
Location: DeKalb-ish, IL
Vehicle:
06 WRX Ltd
02 Forester S

Default

2004 STI Cross member complete-front suspension (20101FE200)
*2002-04 WRX is entirely different*
weight w/o support or jack plate: approx 24.0 lbs
uppipe clearance: yes
forward bolting locations for Frame assembly-front: yes
forward LCA bolting locations: yes
rearward LCA bolting locations for Frame assembly-front: yes
LCA bolt c-l to body plane: 184mm
LCA bushing width: 61mm
RHS steering rack saddle: square
RHS mounting: clamp-gear box pipe (34166FE060) and shorter bolts
LHS steering rack saddle: square
LHS mounting: clamp-gear box pinion (34120AA010) and shorter bolts
support/jack plate: uses Support arm, front (20107FE001) and Jack up plate, front (20510AA000)
can also use Support arm, front (20107FE010) as an alternative for other two
Steering racks: 2004 style racks obviously fit
2005-07 racks easily fit using longer bolts and w/o the u-brace, just use fender washers over mounting ears



2004 STI Cross member photos














Last edited by JarHarms; 06-09-2015 at 11:02 PM.
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Old 06-09-2015, 10:27 PM   #3
JarHarms
Scooby Specialist
 
Member#: 138994
Join Date: Jan 2007
Chapter/Region: MWSOC
Location: DeKalb-ish, IL
Vehicle:
06 WRX Ltd
02 Forester S

Default

2005 STI Cross member complete-front suspension (20101FE500 sub -> 20101FE510)
still searching for the FE500 vs FE510 specs, I "suspect" they dropped the forward LCA subframe mounts and changed the bracing plates.
*2005 WRX is entirely different*
weight w/o support or jack plate: approx 24.5 lbs
uppipe clearance: yes
forward bolting locations for Frame assembly-front: yes
forward LCA bolting locations: yes
rearward LCA bolting locations for Frame assembly-front: yes
LCA bolt c-l to body plane: 184mm
LCA bushing width: 61mm
RHS steering rack saddle: round
RHS mounting: clamp-gear box pipe (34166FE060) and shorter bolts
LHS steering rack saddle: round
LHS mounting: housing mount ears and clamp-gear box pinion (34166FE050) with longer bolts
support/jack plate: uses Support arm, front (20107FE001) and Jack up plate, front (20510AA000)
can also use Support arm, front (20107FE010) as an alternative for other two
Steering racks: 2005-07 style racks obviously fit
2004 racks can be "forced in" using shorter bolts and the corresponding clamps but the hydraulic pipes interfere with the cross member



2005 STI Cross member photos














Last edited by JarHarms; 06-09-2015 at 11:21 PM.
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Old 06-09-2015, 10:27 PM   #4
JarHarms
Scooby Specialist
 
Member#: 138994
Join Date: Jan 2007
Chapter/Region: MWSOC
Location: DeKalb-ish, IL
Vehicle:
06 WRX Ltd
02 Forester S

Default

2006-07 STI Cross member complete-front suspension (20101SA040)
*also used on the 2006-07 WRX*
weight w/o support or jack plate: approx 24.0 lbs
uppipe clearance: yes
forward bolting locations for Frame assembly-front: yes
forward LCA bolting locations: none
rearward LCA bolting locations for Frame assembly-front: yes
LCA bolt c-l to body plane: 184mm
LCA bushing width: 61mm
RHS steering rack saddle: round
RHS mounting: clamp and shorter bolts
LHS steering rack saddle: round
LHS mounting: housing mount ears and clamp-gear box pinion (34166FE050) with longer bolts
support/jack plate: uses Support arm, front (20107FE010)
can also use Support arm, front (20107FE001) and Jack up plate, front (20510AA000) as an alternative to the other one
Steering racks: 2005-07 style racks obviously fit
2004 racks can be "forced in" using shorter bolts and the corresponding clamps but the hydraulic pipes interfere with the cross member



2006-07 STI Cross member photos














Last edited by JarHarms; 06-09-2015 at 11:08 PM.
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Old 06-09-2015, 10:28 PM   #5
JarHarms
Scooby Specialist
 
Member#: 138994
Join Date: Jan 2007
Chapter/Region: MWSOC
Location: DeKalb-ish, IL
Vehicle:
06 WRX Ltd
02 Forester S

Default

Support arms and Jack plates
2004-05 Support arm, front (20107FE001) - approx 1.5lb, multi part fabricated steel, rubber end plugs


Jack up plate, front (20510AA000) - approx 0.5lb, single piece stamped steel, undertray bolts to this plate




2006-07 Support arm, front (20107FE010) - approx 1lb, single piece stamped steel, serves as support arm and jack plate, undertray hooks and bolts to this plate
certainly a cost reduction effort by Subaru, not sure if there is any functional change

Last edited by JarHarms; 06-09-2015 at 11:26 PM.
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