|
|
|
|
Thread Tools | Display Modes |
08-15-2010, 08:34 PM | #1 |
Scooby Newbie
Member#: 230708
Join Date: Nov 2009
|
Act-4 Active All-Wheel Drive vs symmetrical all wheel drive
one version of the 2011 legacy has the Act-4 Active All-Wheel Drive and all the others are the Symmetrical all wheel drive typical of subaru. Does anyone know the difference? a quick google search showed nothing.
* Registered users of the site do not see these ads.
|
08-15-2010, 08:44 PM | #2 |
Scooby Newbie
Member#: 244821
Join Date: Apr 2010
Chapter/Region:
MWSOC
Location: Michigan
Vehicle:2011 Chevy Silverado |
The 2010+ Legacy uses 3 different systems. The manual transmission 2.5i and 2.5GT use the standard full time 50/50 split system with the viscous center diff than can "lock up" as needed. 3.6R models use the variable torque distribution system, which normally has a 40/60 front to rear power delivery, along with a limited slip diff out back. This system can send power to individual wheels as needed. The CVT-equipped 2.5i uses yet another system that I think uses a 90/10 split and can divide it up to 50/50 as needed.
|
08-15-2010, 11:27 PM | #3 | |
Scooby Newbie
Member#: 230708
Join Date: Nov 2009
|
Quote:
|
|
08-17-2010, 09:58 AM | #4 |
Scooby Guru
Member#: 4021
Join Date: Feb 2001
Chapter/Region:
NESIC
Location: Natick, MA USA
Vehicle:1999 Legacy GT Ltd Quick Silver Metallic |
The Legacy CVT setup offers exceptionally high fuel mileage, but from what I have read, suffers from fairly slow lack-luster performance. I have not driven around in one of these cars so I am only basing this on what others have posted.
In the world of fuel efficent automatic transmissions, you can have fuel-efficiency, low-cost, reliability, and high-performance. You can not yet have all these things in one package though. I can not speak to what Subaru's CVT offers compared to their competition. The latest and more popular setups from other manufacturers typically involve an electronically controlled 6-speed setup with "twin-clutch" mechanisms that make shifting so much simpler, that the CVT is perhaps not as big a draw as it had been at one time. |
08-19-2010, 12:03 AM | #5 |
Scooby Newbie
Member#: 194078
Join Date: Nov 2008
Chapter/Region:
South East
Location: N.C.
Vehicle:1997 Legacy Outback Blue |
I test drove a CVT and it was awesome. Smooth as glass and quick too. Always in the power-band. If it was strong enough I would put it in my 03' WRX.
|
08-19-2010, 02:44 AM | #6 | |
Scooby Newbie
Member#: 183596
Join Date: Jul 2008
Chapter/Region:
South East
Location: USA
Vehicle:2005 WRX/9-2x Obsedian Black Pearl |
Quote:
Hehe, you should go test drive a 3.6 CVT new outback. their quite fun cars, I love how they "shift" and change into a higher ratio/lower ratio. Its quite the difference from a 4EAT for sure. |
|
08-19-2010, 06:53 AM | #7 |
Scooby Newbie
Member#: 244821
Join Date: Apr 2010
Chapter/Region:
MWSOC
Location: Michigan
Vehicle:2011 Chevy Silverado |
3.6 doesn't use the CVT, it uses the 5EAT from the previous 3.0 Legacy/OB. CVT is 2.5i only.
|
08-20-2010, 11:21 AM | #8 |
Scooby Newbie
Member#: 183596
Join Date: Jul 2008
Chapter/Region:
South East
Location: USA
Vehicle:2005 WRX/9-2x Obsedian Black Pearl |
|
08-20-2010, 03:04 PM | #9 |
Scooby Newbie
Member#: 70361
Join Date: Sep 2004
Chapter/Region:
NESIC
Location: Lexington, MA
Vehicle:2005 LGT ltd wag 5MT Silver |
|
01-18-2011, 01:24 PM | #10 |
Scooby Newbie
Member#: 245483
Join Date: Apr 2010
Vehicle:2008 Legacy Spec B |
Does anyone have any insight on those 3 AWD systems that subaru offers right now? Sounds like 50/50 or 60/40 is so much better choice for climbing those snowy hills. 90/10 that CVT equipped cars have seems to be pretty much on demand AWD. You have essentially FWD with more power to the rear wheels IF computer decides it's needed. From my latest FWD hill climbing ......"experiences" I can tell that the last thing I would want is hesitation from the computer trying to decide where traction is needed most. Fraction of a second of hesitation might as well be a difference between keeping the momentum and climbing up the hill or loosing it and getting stuck half way trough. Any thoughts highly appreciated.
|
01-18-2011, 02:18 PM | #11 |
Former Vendor
Member#: 60836
Join Date: Apr 2004
Chapter/Region:
SCIC
Location: Torrance, CA
Vehicle:2006 Mod Class STI TIMEATTACK!! |
It's pretty much the same as what they've always offered with some new names thrown in. The 5-speed, VTD, and DCCD use an actual center differential and mechanical connection to all four wheels. The "90/10" version which is found in most 4eats has a clutch pack that can only transfer some power rearward, but it is at least a proactive system that will provide lockup before the front wheel start to slip.
|
01-19-2011, 11:28 AM | #12 | |
Scooby Guru
Member#: 120
Join Date: Jul 1999
Chapter/Region:
AKIC
Location: Where the Navy sends me...
Vehicle:1997 Legacy 2.5GT 1996 Impreza coupe |
Quote:
My father's automatic Outback felt no different in the snow than my 5MT Legacy. |
|
01-19-2011, 12:36 PM | #13 |
Scooby Newbie
Member#: 245483
Join Date: Apr 2010
Vehicle:2008 Legacy Spec B |
I have no doubt subaru's AWD is very capable system but given huge mechanical differences between 2.5i and 3.6 I would like to know if both have similar performance on snowy trails. I will be buying outback in the middle of the year and would definitely prefer 2.5 CVT for added fuel economy and lower cost. Info on 3.6 AWD is pretty specific and videos proof it's more than capable. On the other hand there is mixed info on 2.5 CVT. Subaru sales people know ***** as any sales people in any dealership, Subaru rep on this forum says it's all "magic" and "zen" ...and than there is whole bunch of misguided 2.5 CVT owners thinking they have a snow cat in their driveway because "in 2 inches of snow it hesitated and then took off like a rocket.....". I can do that in my FWD with half-decent snow tires any day in more than 2 inches of snow.
Basically I am trying to figure out if: 1) AWD on 2.5 CVT is good enough to climb a snowy hill 2) is 2.5 engine itself powerful enough for higher altitudes. Some say it can loose as much as 30% of power in higher parts of Colorado. The question is whether it is just an inconvenience or would it prevent me from getting where I want simply because there is not enough torque to get things done. Thanks again for your input. |
01-19-2011, 06:50 PM | #14 | ||
Scooby Guru
Member#: 120
Join Date: Jul 1999
Chapter/Region:
AKIC
Location: Where the Navy sends me...
Vehicle:1997 Legacy 2.5GT 1996 Impreza coupe |
Quote:
Again, have you seen any Outbacks or Foresters or other Subies having problems making their way up a snow-covered hill? Quote:
Typically driving in the snow, whether it be climbing a hill or anything else, is more a matter of traction than power. |
||
01-20-2011, 11:24 AM | #15 |
Scooby Specialist
Member#: 21293
Join Date: Jul 2002
Chapter/Region:
MWSOC
Location: Oak Park, IL
Vehicle:05 OB Black Bean 1969 W-30 |
Check over at www.subaruoutback.org.
There has been discussion about the CVT and traction in snow and ice. There is a lot of good and bad reviews. You probably should test drive right after a snow to assure its for you. Peace, Greg |
01-26-2011, 04:10 PM | #16 |
Scooby Newbie
Member#: 28632
Join Date: Nov 2002
Chapter/Region:
Tri-State
Location: North Wales Pa
Vehicle:2011 Legacy 3.6R Dark grey metallic |
I have a 2011 Legacy 3.6R Limited. In the snow it acts more like a Sti. The back end likes to step out when the traction control is turned off. With the traction control on, the rear will step out a little before intervention.
|
Thread Tools | |
Display Modes | |
|
|
Similar Threads | ||||
Thread | Thread Starter | Forum | Replies | Last Post |
FS : ** PRICE DROP**Wheel Bearing Kit for all 4 wheels and seals | birdman.1 | Suspension/Brakes/Handling | 22 | 09-06-2010 03:37 PM |
Symmetric vs Symmetrical | sha_zapple | Off-Topic | 8 | 01-25-2010 12:10 PM |
subaru symmetrical all wheel drive | motorhead1359 | Newbies & FAQs | 15 | 09-23-2009 10:10 PM |
1/2 drive vs 3/4 drive | BlackoutWRX | Newbies & FAQs | 12 | 03-12-2006 11:48 PM |
BMW all-wheel-drive vs Subaru AWD vs MB 4-matic | etam | Normally Aspirated Powertrain | 7 | 12-14-2000 12:54 AM |