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Old 10-28-2000, 10:43 AM   #1
Turk
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Post Front LSD Mechanical or Viscous?

Since I have a 2000 Impreza RS with center and rear Viscous LSDs what would be better a mechanical Front lsd or viscous. And why?
Thanks ahead of time.

Turk
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Old 10-28-2000, 10:51 AM   #2
JGard
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Edit: i was wrong

[This message has been edited by JGard18 (edited October 28, 2000).]
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Old 10-28-2000, 11:06 AM   #3
Impreza Rider
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From SOA's website:
Manual transmission models have a viscous-coupling locking center differential. 2.5 RS models have a viscous limited-slip rear differential.

I don't know which would be better for the front though.

Jim
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Old 10-28-2000, 07:59 PM   #4
legacyGT00
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It depends on what you want. Better is a relative term. Mechanical will get more power to the ground faster, but costs alot more.

You get what you pay for.
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Old 10-28-2000, 08:19 PM   #5
Strepto
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Question

why do you want a front LSD?

There was a discusion about this on the STi-mlist. A front LSD would actually be detrimental to the RS's handling unless you're on loose surfaces alot (or have the power to actually break the fronts loose).
I'm sure Joel can give the entire speech on it.
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Old 10-29-2000, 06:00 AM   #6
Turk
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Question

I thought it would help understeer and grip, just like it would in front wheel drive cars. Is this not true?

Turk

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Old 10-29-2000, 08:00 AM   #7
Strepto
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Exclamation

it will increase understeer
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Old 10-29-2000, 08:21 AM   #8
DLC
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LSD on a FWD car actually makes it very understeer prone, as you've got the coupling mechanism fiddling around while you're waiting for it to apply power to the ground. When it activates it usually slows the front wheels down as well, and would make you moderately slower unless you were prepated to dump more power in.
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Old 10-30-2000, 06:47 AM   #9
ColinL
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A torsen front differential would actually reduce understeer, because it has the ability to bias torque to the outside wheel.
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