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Old 08-07-2001, 01:59 AM   #1
Clegg
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Default Differences between the MY02 2.5RS and WRX 4EAT

I heard there was a rather significant differences between the 4EAT in the WRX Vs the 2.5RS, anyone know exactly what the differences are? I am doing some planning for the coming year for my 2.5RS to hit 250+Hp and I want to know what Subie has done to the WRX 4EAT to make it stand the load from the 230Hp engine.

I am already going to be sending the T/C and Valvebody to Levelten.
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Old 08-07-2001, 05:24 PM   #2
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No one knows? Everytime I meantioned in the past the WRX and the 2.5RS auto trannys were the same.. people would correct me.. but now no one knows WHATS different in them?
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Old 08-07-2001, 07:11 PM   #3
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I think thy are the same...in all doubt go to your dealer and ask...tomarrow I will ask if I go up der...but I wouldn't worrie get a tranny cooler man...I am doing that because I am planning on turboing soon...but the cash flow is my problem...

you need
the tc(your doing now)
the tranny cooler
and your turbo stuff
oh yeah and be prepaired to blow your tranny...I am NOT saying it will happen but you know always make sure you ahve the buget for the worse.
good luck KEEP ME UPDATED!!!!!!!
-Neal
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Old 08-07-2001, 07:13 PM   #4
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Clegg: are you going to the bbq this saturday....you should make the hawl there...it is going to be huge...alot of people...also then I don't need to be the only 02rs there also talk to hndatech about your idea me and him ahve been knocking hads on how to do my turbo.
-Neal
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Old 08-07-2001, 08:27 PM   #5
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the auto WRX tranny is not the same. i think the wrx auto tranny has the VDC or something like that allowing the torque to be split 45rear and 55front. i'm not sure on this. i'm just guessing.
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Old 08-07-2001, 08:33 PM   #6
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I am out of work still but I think the trip down could be fun, its in gurnee right?
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Old 08-07-2001, 08:34 PM   #7
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yeah man, you gotta come...and I think the rs does that 55/45 split also
-Neal
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Old 08-07-2001, 08:34 PM   #8
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Quote:
Originally posted by inpreza kid
the auto WRX tranny is not the same. i think the wrx auto tranny has the VDC or something like that allowing the torque to be split 45rear and 55front. i'm not sure on this. i'm just guessing.
it has a LSD in the read, but I am not sure about a VCD in the center. I may be wrong.
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Old 08-07-2001, 09:07 PM   #9
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I used to sell subarus, all the newer 4eats have that torque split, they did that because they know when a car takes off that the weight of the car shifts to the rear. They wanted a little more torque to go to the rear tires rather than the front. where the old 4eat was like 80front/20rear split, or something like that.
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Old 08-07-2001, 09:14 PM   #10
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The H6 outback gets the VDC (I think).

And, the wrx only gets the LSD this model year. The '01 rs's got them . THAT is one reason why I didnt get the '02. Plus the sunroof, fogs, wing were included...ha is what I say. The my02 rs is a rip off if you ask me.... And the wrx is over priced..

I am very opinionated .

-justin
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Old 08-07-2001, 09:18 PM   #11
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Blind.. you are such a party pooper... I am going to go and drive my MY02 off a cliff now and buy a civic...
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Old 08-08-2001, 01:37 AM   #12
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Sorry dude ...I would rather own a my02 impreza compared to a civic....TRUST ME .


I traded in my 00 civic ex automatic (0-60 in 2 days flat!) on my 5-speed impreza. Hands down THE BEST descision I have ever made!
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Old 08-08-2001, 01:57 AM   #13
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going to the dealer and asking if somethign is different on two cars is stupid

i went in one day, and asked if the wheels from the 2.5RS would fit on my OBS and they said no, the cars are different
...uhhhh...
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Old 08-08-2001, 02:20 AM   #14
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Yeh the dealer I talked to told me they didnt offer a WRX in automatic... so...
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Old 08-08-2001, 05:28 PM   #15
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ALL WRX w/AT have VTD (Variable Torque Distribution), none of the other 4 cylinder Subarus have this. It is found on the H-6 3.0 Outback with VDC but the WRX does not have VDC. The reason for this (VTD) is to give a more performance feel to the handleing. VTD gives 55% torque to the rear, 45% torque to the front, and can be locked-up 50/50.

The other differance in the WRX AT is the number of clutch plates. The WRX has 1 more friction and driven plate than the 2.5RS in the High Clutch, 2-4 brake, Low Clutch, Low/Reverse Brake.

1st and 2nd gear ratios are differant between N/A Sedan (3.027, 1.619) and N/A Wagon/Turbo (2.785, 1.545). Final drive ratio is differant between N/A Sedan (4.444) and N/A Wagon/Turbo (4.111).

All WRX have rear LSD.
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Old 08-08-2001, 07:58 PM   #16
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Quote:
Originally posted by SubyTechMaster
ALL WRX w/AT have VTD (Variable Torque Distribution), none of the other 4 cylinder Subarus have this. It is found on the H-6 3.0 Outback with VDC but the WRX does not have VDC. The reason for this (VTD) is to give a more performance feel to the handleing. VTD gives 55% torque to the rear, 45% torque to the front, and can be locked-up 50/50.
Umm according to the Impreza press kit I got my mits on it saysthe WRX has a VDC also.
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Old 08-08-2001, 10:55 PM   #17
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Quote:
Originally posted by Clegg


Umm according to the Impreza press kit I got my mits on it saysthe WRX has a VDC also.
I read that too in the wrx handout thingy @ my subaru dealership ( you know the catalauge of the wrx.....)

-justin

basically i was wrong before .
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Old 08-09-2001, 05:29 PM   #18
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Don't ever ask a salesman a technical question unless you know him.!! I always ask to speak to the Subaru technician in the shop. Thats the guy who is gonna answer your questions. He fixes the trannies when they break. I pretty shure he gonna know the diff's.

Sorry if anyone here is a salesman.
Just what I have found here in AZ
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Old 08-10-2001, 06:55 AM   #19
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Pre-WRX 4eat was 90/10 power split until road conditions change, then it can change up to 50/50.

It is also 50/50 in Reverse and 1st gear.

Only time I have ever spun out offroad I was doing 30mph in 1st gear and the wagon got very tail-happy on clay. In 2nd or 3rd it was much easier to control.
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Old 08-12-2001, 06:04 AM   #20
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VTD and VDC are different things all together. VDC stands for Vehicle Dynamics Control, which works through sensors on the steering wheel, wheel sensors, and a few other sensors to determine if the car is understeering, or oversteering, then using the brakes it makes the car go where you want it. (or at least tries) VTD transmission is found in the VDC, but is aslo put in the WRX. i was trained in this. This doesn't mean the WRX has the VDC, it just has the same tranny.
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