Welcome to the North American Subaru Impreza Owners Club Tuesday September 16, 2014
Home Forums WikiNASIOC Products Store Modifications Upgrade Garage
NASIOC
Here you can view your subscribed threads, work with private messages and edit your profile and preferences Home Registration is free! Visit the NASIOC Store NASIOC Rules Search Find other members Frequently Asked Questions Calendar Archive NASIOC Upgrade Garage Logout
Go Back   NASIOC > NASIOC Technical > Normally Aspirated Powertrain

Welcome to NASIOC - The world's largest online community for Subaru enthusiasts!
Welcome to the NASIOC.com Subaru forum.

You are currently viewing our forum as a guest, which gives you limited access to view most discussions and access our other features. By joining our community, free of charge, you will have access to post topics, communicate privately with other members (PM), respond to polls, upload content and access many other special features. Registration is free, fast and simple, so please join our community today!

If you have any problems with the registration process or your account login, please contact us.
* Registered users of the site do not see these ads.
Reply
 
Thread Tools Display Modes
Old 02-04-2001, 10:58 AM   #1
Joe Hogan
Scooby Specialist
 
Member#: 699
Join Date: Jan 2000
Location: Green Mountain State
Vehicle:
2002 golf TDI
Blue

Post 4EAT comments

After purusing the interior of a 4EAT on the bench, a couple things are apparent.
Yes you can get a 50/50 torque split reasonably easily with some electronics. However, pushing more than 50% torque to the rear is not feasable.
The transmission value body is very sophisticated with no less than 7 selonoids controling various shift and engagements.
With some fancy electronics this transmission is very flexible. A few things that are being explored are a button/paddle shifter, Converter lockup on demand, adjustible shift quality, adjustable shift points, etc.
According to my trusted expert this trans can easily handle 350 ft lb of torque. Others have mentioned higher values, some outrageous values ... we'll see.
Keep you updated on the progress with this buildup
* Registered users of the site do not see these ads.
Joe Hogan is offline   Reply With Quote
Old 02-04-2001, 11:55 AM   #2
youthanasia
Scooby Specialist
 
Member#: 1883
Join Date: Jul 2000
Chapter/Region: VIC
Location: Burnaby, BC, Canada
Vehicle:
2013 R60S All4

Thumbs up

YEEEY 4EAT!!!
youthanasia is offline   Reply With Quote
Old 02-04-2001, 01:12 PM   #3
inpreza kid
Scooby Specialist
 
Member#: 3334
Join Date: Dec 2000
Location: Calgary, Alberta, Canada
Post

joe are you talking about the 4EAT on the 2.5? i have a auto and wanting to turbo it in the furure. it would be amazing if it can hold up with that much power.
inpreza kid is offline   Reply With Quote
Old 02-05-2001, 12:24 AM   #4
Andy_T
Scooby Newbie
 
Member#: 502
Join Date: Nov 1999
Location: Sydney, New South Wales, Australia
Post

With some fancy electronics this transmission is very flexible. A few things that are being explored are a button/paddle shifter, Converter lockup on demand, adjustible shift quality, adjustable shift points, etc.

Doesn't the sequential shift selector on the B4 RK/GT-B and auto WRXs control the same 4EAT as the 2.5 Legacy/Impreza? Even if the mechanicals were beefed up to deal with extra turbo grunt, I'd imagine the control mechanism to be the same (and even swappable, if you had the cash).

Andy_T is offline   Reply With Quote
Old 02-05-2001, 12:59 AM   #5
Kevin Thomas
Street Racing Instructor
Moderator
 
Member#: 110
Join Date: Jul 1999
Location: 1997 OBS, 1996 SVX, 1988 RX
Vehicle:
1989 1989 XT6

Question


Quote:
According to my trusted expert this trans can easily handle 350 ft lb of torque. Others have mentioned higher values, some outrageous values ... we'll see.
Joe, what 4EAT tranny are you talking about? For the 2.5, 2.2, 1.8ltr or some other Subaru? I haven't done my homework so I don't know the name of the WRX autotrannys and such. I just want to be sure what ltr engine's tranny you are building up and/or doing work on. Thanks!
Kevin Thomas is offline   Reply With Quote
Old 02-05-2001, 11:20 AM   #6
CRZ_MSL
Scooby Newbie
 
Member#: 1610
Join Date: Jun 2000
Post

The 4EAT is the transmission used in the SVX. A RWD only version of this transmission was used in the Nissan 300ZX and 240SX, Infiniti Q45 and M30, and quite probably the Cefiro.

CRZ_MSL is offline   Reply With Quote
Old 02-05-2001, 04:11 PM   #7
Joe Hogan
Scooby Specialist
 
Member#: 699
Join Date: Jan 2000
Location: Green Mountain State
Vehicle:
2002 golf TDI
Blue

Post

The 4EAT that is being modified is out of a MY00 RS. According to my reliable source the tranny is much stronger than "most" other auto transmissions from Japan. As with anything, there are exceptions.
Once this transmission is installed with a suitably powerful forcefed 2.5 to test it, I'll post up some empirical findings.
This combo should be on the Dyno in late March for some real world #s.

ANDY_T
Tell me more about the 4EAT TCM for overseas models. No sense in recreating the wheel, so to speak.

If I can get the TCM for an Auto WRX it would make these mods easier.

Joe Hogan

[This message has been edited by Joe Hogan (edited February 05, 2001).]
Joe Hogan is offline   Reply With Quote
Old 02-07-2001, 12:02 AM   #8
Andy_T
Scooby Newbie
 
Member#: 502
Join Date: Nov 1999
Location: Sydney, New South Wales, Australia
Post

"Tell me more about the 4EAT TCM for overseas models"

Japanese, NZ and I think UK-market WRXs (the new one) have the sportshift mechanism, with a straight PRND321 gate and a +/- tip up-down to the left (or is it the right? Depends on which side you sit I guess) accessed by going sideways from "D". This appeared first in the 1998-and-up B4 RSK/GTB autos (new shape), which have the straight up-and-down gate plus the +/- thing off to the side. Quite a simple, elegant solution; much better than the side-to-side thing you get in Mercs, Chryslers etc. and a bit sexier/"cooler" looking than the leather-gaitered BMW approach. (I think the metallised gate is meant to bring out the Ferrari driver in you!).

Whether the actual auto transmission in a WRX or a B$ is strengthed, I do not know; all I know is that the control mechanism looks like it could bolt in place of the standard dog-leg gate currently available.

Check out the Japanese Subaru website for pictures. As you said, no point in reinventing the wheel, contingent (of course) on the parts actually fitting.

If I come across anything new I'll post it (although I rarely do: dealer staff here are generally unhelpful).
Andy_T is offline   Reply With Quote
Old 02-07-2001, 12:47 AM   #9
WRXwannbe
Scooby Specialist
 
Member#: 1954
Join Date: Jul 2000
Location: Long Beach, CA, USA
Vehicle:
1997 Impreza L/WRS
WRB

Post

any chance of scrounging the pieces of that mechanism and sending it my way for a price?
WRXwannbe is offline   Reply With Quote
Old 02-07-2001, 08:19 AM   #10
glenstiles
Scooby Newbie
 
Member#: 2827
Join Date: Nov 2000
Location: Woodland, CA
Vehicle:
2002 WRX wagon
Silver, baby, silver

Post

Thats awesome info on the 4 EAT. I am surprised that no one has come out with a shift kit for it, ala tiptronic style. AMS, an audi/vw tuner has a pushbutton shift kit for the auto tranny A-4, I thought that was pretty cool. Two little buttons to shift on the side of the auto shift lever, one for upshifts and the other for downshifts. Very slick, and apparently it worked quite well with the turbo. This would be a sweet set up for the SVX for example.

Glen
glenstiles is offline   Reply With Quote
Old 02-07-2001, 02:08 PM   #11
tahrndt
Scooby Specialist
 
Member#: 1315
Join Date: Apr 2000
Location: Minneapolis, MN. U.S.A.
Angry

Dam DAm, I can't remember where I saw it but it was on an Oz. web page, there is a company down under that is producing "tip-tronic" shifting for automatic cars. At the last reading that had one out for the Fords and European cars,and were in the process of making one for the Soob, Japanese transmisions. It had two paddles that mounted behind the steering wheel and you could select your gear prior to entering a corner - like a manual - so that you had the necessary power to pull out of the line and not have to worry about the tranny kicking down 1/2 way through the corner. If I find the site I will post it here.
Tim
tahrndt is offline   Reply With Quote
Old 02-08-2001, 12:03 AM   #12
KITTbri
Scooby Newbie
 
Member#: 2748
Join Date: Oct 2000
Location: Atlanta, Ga
Vehicle:
1992 WHT SE-Rw/stuff
2.5RS & '01 Mazda MP3

Question

ok, in the svx the gate is a "dog leg" gate?

my 99RS "appears" to be a straight gate? so would the JDM,NZ,UK sport shift be able to bolt straight up?

also, is that a 5speed or 4speed?
KITTbri is offline   Reply With Quote
Old 02-22-2001, 02:44 AM   #13
Impreza22B
Scooby Newbie
 
Member#: 3128
Join Date: Dec 2000
Location: Chicago, IL, USA
Vehicle:
2001 RS Saloon
Deep Mica Blue

Exclamation

Guys, I am really interested in the auto tranny shift thingy too. Pleaes keep me updated here by PM because I tend to always lose threads here. So many posts to keep up with. It would be neat if we have the option to initiate Watch on this topic.
Impreza22B is offline   Reply With Quote
Old 02-22-2001, 05:13 AM   #14
Faraz
What?...
Do they speak English in What?

Moderator
 
Member#: 1459
Join Date: May 2000
Chapter/Region: Tri-State
Location: Allentown
Vehicle:
2008 WRX 5door MT
WR Blue

Post

Wait doesn't level10 already do this for our cars? It just COSTS $$$$$
Faraz is offline   Reply With Quote
Old 02-22-2001, 09:52 AM   #15
Jessie James
Scooby Specialist
 
Member#: 2072
Join Date: Aug 2000
Chapter/Region: MAIC
Location: Out of my mind
Post

Subaru has one on the Legacy B4, including shift buttons on the steering wheel.

Here's some pics from their Japan web site:





Nice?
Jessie James is offline   Reply With Quote
Old 02-23-2001, 07:11 AM   #16
Impreza22B
Scooby Newbie
 
Member#: 3128
Join Date: Dec 2000
Location: Chicago, IL, USA
Vehicle:
2001 RS Saloon
Deep Mica Blue

Post

Oui! Si!
Impreza22B is offline   Reply With Quote
Old 02-23-2001, 07:13 AM   #17
Impreza22B
Scooby Newbie
 
Member#: 3128
Join Date: Dec 2000
Location: Chicago, IL, USA
Vehicle:
2001 RS Saloon
Deep Mica Blue

Post

Really? Level10 has the parts available now? What are the actual parts that need to be replaced? Where can I see 'em?
Impreza22B is offline   Reply With Quote
Old 02-23-2001, 08:08 AM   #18
MPREZYA
SCIC
Moderator
 
Member#: 85
Join Date: Jul 1999
Chapter/Region: SCIC
Location: www.themonkeystrunk.com
Post

www.levelten.com They will commence selling online here soon. Total cost for them to do the work (PTS kit and hydro kit) is @$3264 +200-300 for shipping (they send someone to pick it up) and another $700 for the upgraded stall on the torque converter.
Turn around time is about a week. Also they are working on a switch for torque lockup to 50-50 and possibly some type of manual shifter. If you call ask for Pat.

MPREZYA is offline   Reply With Quote
Old 02-23-2001, 04:53 PM   #19
John2.5RS
Scooby Guru
 
Member#: 1140
Join Date: Mar 2000
Chapter/Region: SCIC
Location: On the road
Vehicle:
2013 Ecoboost'd F150
Grey

Exclamation

Wow! That's one costly upgrade! IMO get a turbo first.
John2.5RS is offline   Reply With Quote
Old 02-23-2001, 07:52 PM   #20
Joe Hogan
Scooby Specialist
 
Member#: 699
Join Date: Jan 2000
Location: Green Mountain State
Vehicle:
2002 golf TDI
Blue

Post

Just my $0.02 .... the wheel mounted shifter and some other trick electronics are being developed as of this writing. They should be installed in the RS by the middle of March. Pat Barrett of Level 10 is very interested in developing sophisticated electronics for the 4EAT and RS crowd. It ain't cheap but fun..fun..fun.
The Level 10 4EAT transmission is finished and being shipped to Trey Cobb for installation in my RS along with a HOT ROD Cobb modified Turbo 2.6 engine. This RS is going to be one bad hombre

Keep your eyes on the Monkey's Trunk for my road trip story. "Joe goes to Texas for power and pleasure"

Joe Hogan is offline   Reply With Quote
Old 04-20-2001, 08:05 AM   #21
Jessie James
Scooby Specialist
 
Member#: 2072
Join Date: Aug 2000
Chapter/Region: MAIC
Location: Out of my mind
Post

bump
Jessie James is offline   Reply With Quote
Reply

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
XT 4eat = WRX 4eat? cyrexpl Forester Forum 12 05-26-2005 10:10 AM
Where and how to upgrade my 4eat to either a 4eat SS or 5eat SS? Diabolical1 CC Transmission (AT/MT) & Driveline 1 03-10-2005 05:11 PM
Is a '04 WRX 4EAT torque converter compatible with a 2002 WRX 4EAT? scooterforever Transmission (AT/MT) & Driveline 6 03-05-2005 08:25 AM
Comments made by NBC commentators during the olympics (unconfirmed email fwd) Asinine Off-Topic 16 09-03-2004 01:39 PM
WRX 4eat vs 2.5rs 4eat Jademonkey Transmission (AT/MT) & Driveline 10 01-02-2002 11:20 AM


All times are GMT -4. The time now is 12:55 PM.


Powered by vBulletin® Version 3.7.0
Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.
Powered by Searchlight © 2014 Axivo Inc.
Copyright ©1999 - 2014, North American Subaru Impreza Owners Club, Inc.