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Old 01-06-2003, 05:59 PM   #1
gtr
Scooby Newbie
 
Member#: 4011
Join Date: Feb 2001
Vehicle:
2010 WRX STI SE
Aspen White

Default Anybody know the weight? Twin scroll and limited front diff?

I couldn't find this info anywhere. If anybody already has or know please advise.

Everything sounds good so far. Maybe i'll be getting the sti instead.
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Old 01-06-2003, 06:00 PM   #2
Kha0S
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Member#: 8808
Join Date: Jul 2001
Chapter/Region: NESIC
Location: Grantham, NH
Vehicle:
2011 WRX (DGM 5D)
2002 WRX/2003 SVTF

Default

No twin scroll, it appears, but front LSD is a SureTrac.

/Andrew
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Old 01-06-2003, 06:02 PM   #3
gtr
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Member#: 4011
Join Date: Feb 2001
Vehicle:
2010 WRX STI SE
Aspen White

Default

What the heck is a SureTrac

Besides being the front diff.
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Old 01-06-2003, 06:03 PM   #4
KC
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Location: SE Mass/RI
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2013 Crosstrek XV
00 Honda S2000

Default

Quote:
Originally posted by gtr
What the heck is a SureTrac

Besides being the front diff.
Impreza WRX STi employs a new Suretrac® limited-slip front differential and a mechanical limited-slip rear differential. The Suretrac differential is a gearless unit that responds to a torque differential between left and right wheels to increase traction and reduce understeer.
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Old 01-06-2003, 06:07 PM   #5
MulletSlayer
Scooby Specialist
 
Member#: 7044
Join Date: May 2001
Chapter/Region: RMIC
Location: Evergreen, CO
Vehicle:
2007 Xterra

Default

I read in Evo that the STI with the twin scroll turbo does not produce the same boxer exhaust note that Subaru is known for, so I am glad there is no twin scroll.

Who wants a Scooby that sounds like a Honda.
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Old 01-06-2003, 06:08 PM   #6
ryball
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Member#: 10433
Join Date: Sep 2001
Location: on top of spaghetti
Vehicle:
1942 Kettenkrad
WR Blue Pearl

Default

Quote:
Originally posted by KC
Impreza WRX STi employs a new Suretrac® limited-slip front differential and a mechanical limited-slip rear differential. The Suretrac differential is a gearless unit that responds to a torque differential between left and right wheels to increase traction and reduce understeer.
So for us mechani-retards... is that good or bad?
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Old 01-06-2003, 06:12 PM   #7
RafalW
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Member#: 8193
Join Date: Jul 2001
Chapter/Region: MWSOC
Location: Illinois, USA
Vehicle:
2008 WRX STI
Blue

Default

I found this:

Quote:
The Suretrac Diff. is made by AP Racing. The same company as the big
brake
kits and performance clutches.

I have AP's catalogue in front of my and I will tell you what it says;

- Excellent packaging results in a direct replacement for the open
differential.
- Proven durability on road, road simulation and race track.
- Senses torque, does not require prior wheel slip
- Operates in conventional lubricants including ATF.
- Constant performance with respect to speed, torque, and temp.
- ABS compatible
- Supplementary to, and compatible with, electronic traction control

".. The suretrac device itself sustains differential torque across
driven
axles and directs the greatest torque to the tire with the best grip,
offering improved differential action particularly in adverse conditions
with
enhance handling and cornering"
" Suretrac utilizes an arrangement of opposing cams and followers which
enables the device to transmit whatever unequil torque the tire contacts
can
withstand, upto a torque limiting ratio set by the design"

Hope this helps you guys out,
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Old 01-06-2003, 06:12 PM   #8
MPREZYA
SCIC
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Chapter/Region: SCIC
Location: www.themonkeystrunk.com
Default

That is good. Consider it like having a posi in the rear and a mechanical (kazz type much stronger than the torsen types) in the rear. It should make for a mean handler that can put the power down big time.
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Old 01-06-2003, 06:15 PM   #9
C-daleRidr
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Member#: 18074
Join Date: Apr 2002
Location: Norman, Oklahoma
Vehicle:
2008 Speed3
Black

Default

Please correct me if I am wrong, but I thought that the purpose of the twin scroll was to help the turbo spool up a little quicker, thereby reducing the amount of loss at the low end. Since the 2.5 hits its peak torque at only 4,000 rpm, it would seem as if that problem is taken care of, assuming that the low end between 0 and 4000 rpm is as impressive as it sounds like on paper.
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Old 01-06-2003, 06:19 PM   #10
kgb
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Member#: 1366
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Chapter/Region: VIC
Location: Delta, BC, Canada
Vehicle:
2000 RS-T -> RSTi-8
Blue Ridge Pearl

Exclamation

I think the 2.5L will take care of the apparently lack of torque down low.... so really no need for twin-scroll turbo?
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