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Front or Rear Wheel Biased?

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Old Oct 6, 2005 | 08:07 PM
  #1  
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Front or Rear Wheel Biased?

I did search and most of the info was from 2003 with a lot of speculation thrown in. No clear explanation. Is the Evo more FRONT or REAR wheel biased when driven normally? (no wheel spin) Thanks in advance.
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Old Oct 6, 2005 | 08:13 PM
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power is split 50/50 i believe
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Old Oct 6, 2005 | 08:14 PM
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I'm not sure about '03's and '04's, but '05's and up with the active center diff. have have a constant 50/50 split.
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Old Oct 6, 2005 | 11:17 PM
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From: 'illadelph mang
Originally Posted by Mike@Forge
I'm not sure about '03's and '04's, but '05's and up with the active center diff. have have a constant 50/50 split.
it was explained to me with the '05 that the tarmac(regular) setting was rear wheel biased the snow setting was 50/50 split and the gravel/rain setting was front wheel biased. but not sure.

Last edited by .50 Cal Cow; Oct 6, 2005 at 11:21 PM.
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Old Oct 6, 2005 | 11:19 PM
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I dont know if this matters...but in snow, on 03's the front tends to spin more then then the rear
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Old Oct 6, 2005 | 11:19 PM
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i was told that the evo was based off a front wheel drive platform. there is no doughtin its 50/50 though
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Old Oct 6, 2005 | 11:25 PM
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Originally Posted by CArkid0101
i was told that the evo was based off a front wheel drive platform. there is no doughtin its 50/50 though
Bingo.

FRONT wheel bias, definitely. Take it to a track and you'd definitely notice it (although to a much lesser degree than STi).

50/50 torque split at all times.

Question is why does it matter, since threadstarter asks "when driven normally"?
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Old Oct 6, 2005 | 11:50 PM
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The 2005 Evo has a 50/50 split or a 100/0 split. When the STi is crusing, it has a 35/65 split or a 50/50. I don't know if this is the same with every year. I found this info on car and driver site.
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Old Oct 7, 2005 | 01:55 AM
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Originally Posted by muzak
The 2005 Evo has a 50/50 split or a 100/0 split. When the STi is crusing, it has a 35/65 split or a 50/50. I don't know if this is the same with every year. I found this info on car and driver site.
Wrong. The Evo ALWAYS has a 50/50 split, no exceptions.
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Old Oct 7, 2005 | 12:27 PM
  #10  
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See? Numerous different answers. I believe it is 50/50 but I'm still not sure.
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Old Oct 7, 2005 | 12:35 PM
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i was told that the evo was based off a front wheel drive platform.
This is true kinda, because the motor sits sideways like a front wheel drive car. On the STI the motor sits straight like a rear wheel drive car.
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Old Oct 7, 2005 | 12:41 PM
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From: Spewgene OR
The Evo ALWAYS has a 50/50 split, no exceptions.
If this were true there would be no ACD. 50/50 all the time is a mechanical lock, like a 4x4 truck with hubs locked, not good for driving on pavement. The ACD software unlocks the center differential at certain times based on yaw rate, steering input, ACD switch setting, etc. It's 50/50 when you have the throttle down and not turning the steering wheel.
edit:
This has been posted before, but maybe we should read it again:
http://www.mitsubishi-motors.com/cor...001/13E_09.pdf

The earlier cars with the viscous center differential are front biased all the time, a viscous center is not going to lock up completely 50/50.

Last edited by Impulsoren; Oct 7, 2005 at 12:48 PM.
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Old Oct 7, 2005 | 01:19 PM
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Originally Posted by xenoturkey
Wrong. The Evo ALWAYS has a 50/50 split, no exceptions.
" The Subaru employs an electromagnetic clutch on the center differential. Under normal driving conditions, say you're just cruising down the interstate, the diff clutch is disengaged, and 65 percent of the engine power is routed to the rear wheels, with the remaining 35 to the front (a 35/65 front-to-rear split). The car's engine computer adjusts that center-diff clutch, based on information from the yaw-rate and throttle-position sensors, and can send as much as 50 percent of engine torque to the front wheels. So the Subaru varies the torque split between 50/50 and 35/65. The driver can also manually select the torque split via a center-console switch.
The Mitsubishi, on the other hand, never sends the majority of engine torque to the rear axle. Instead, it can send all the engine torque to the front wheels or 50 percent of it (using an electrohydraulic clutch on the center diff). So the Evo varies the front-to-rear torque split between 100/0 and 50/50. In addition to the yaw-rate and throttle-position sensors, the Evo has a steering-wheel-angle sensor that also provides the computer with information"

This is from car and driver. Don't tell me I'm wrong, tell them.

EDIT: Here is the link http://www.caranddriver.com/article....rticle_id=9052
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Old Oct 7, 2005 | 03:13 PM
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i found it can be 100/0 or 50/50 at diffrent times depeding on road conditions and driving style.
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