Welcome to the North American Subaru Impreza Owners Club Saturday August 29, 2015
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 > Subaru Conversions

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 02-09-2006, 11:03 PM   #1
MixeD_MenacE
Scooby Specialist
 
Member#: 1274
Join Date: Apr 2000
Chapter/Region: W. Canada
Location: Winnipeg
Vehicle:
MY00 BRP 2.5RSTi
www.zucru.ca

Default EJ257+Exedy Organic+Stock RS trans = Boom?

I need some help with my conversion. I've sourced out an EJ257 and will be going with it. Will an exedy stage 1 organic and stock RS transmission/drive train hold up to the new motor? I understand there's probably a safety factor of 3-4 built into the stock box (w/ stock n/a engine)..unfortunatly the safety factor goes down once more power is added.

The ultimate goal is a 6spd but my budget is limited for this year (possibly next year the new trans will go in)

I've had a clutchmasters stage 3 suggested to me as a replacement for the exedy.

The car is my auto-x car/daily driver. No drag racing for me.

Thoughts?

SC
#31 DSP
Winnipeg Sports Car Club
* Registered users of the site do not see these ads.
MixeD_MenacE is offline   Reply With Quote
Sponsored Links
* Registered users of the site do not see these ads.
Old 02-09-2006, 11:06 PM   #2
amukaoen
Scooby Specialist
 
Member#: 62595
Join Date: May 2004
Chapter/Region: SCIC
Location: San Diego, CA
Vehicle:
04 WRX Cobb S2
World Rally Blue

Default

BOOM~!

the STi has a really strong transmission for a very good reason!
amukaoen is offline   Reply With Quote
Old 02-09-2006, 11:10 PM   #3
svek
*** Banned ***
 
Member#: 82259
Join Date: Mar 2005
Chapter/Region: BAIC
Location: koledge at csus
Vehicle:
1999 impreza 2.2L
Brilliant Red <4EAT Club>

Default

powerlabs still uses his stock rs tranny with his RA swap...
svek is offline   Reply With Quote
Old 02-09-2006, 11:32 PM   #4
MixeD_MenacE
Scooby Specialist
 
Member#: 1274
Join Date: Apr 2000
Chapter/Region: W. Canada
Location: Winnipeg
Vehicle:
MY00 BRP 2.5RSTi
www.zucru.ca

Default

i've been getting the hit or miss with this issue. I believe Kotir is also running a stock trans with his V8 twinscroll set up
MixeD_MenacE is offline   Reply With Quote
Old 02-10-2006, 12:17 AM   #5
Scoobie Steve
Scooby Specialist
 
Member#: 2289
Join Date: Sep 2000
Chapter/Region: Tri-State
Location: Bangor, PA
Vehicle:
1998 11.87@112mph
Subaru L Ver 6 STi Type R

Default

svek bet me to it. Powerlabs and others have put alot of power through a stock RS trans. Shift easy and no launching.
Scoobie Steve is offline   Reply With Quote
Old 02-10-2006, 12:57 AM   #6
moss
Scooby Guru
 
Member#: 10197
Join Date: Sep 2001
Chapter/Region: MAIC
Location: Gtown, MD
Default

Alot of people are using RS trannies... just be gentle like everyon said... you slam gears, that tranny is toast.

keith
moss is offline   Reply With Quote
Old 02-10-2006, 12:58 AM   #7
MixeD_MenacE
Scooby Specialist
 
Member#: 1274
Join Date: Apr 2000
Chapter/Region: W. Canada
Location: Winnipeg
Vehicle:
MY00 BRP 2.5RSTi
www.zucru.ca

Default

hmmmm i wonder if powerlabs can chime in...kotir too??

*wave*
MixeD_MenacE is offline   Reply With Quote
Old 02-10-2006, 01:00 AM   #8
moss
Scooby Guru
 
Member#: 10197
Join Date: Sep 2001
Chapter/Region: MAIC
Location: Gtown, MD
Default

I'll add this though... Soon2bgreat was running a stock RS tranny on a V7 motor, and that clutch (upgraded) slipped like a MOFO. the car was pretty worthless above 5k in most gears (esp 5th)
moss is offline   Reply With Quote
Old 02-10-2006, 01:26 AM   #9
Homemade WRX
Scooby Guru
 
Member#: 33782
Join Date: Mar 2003
Chapter/Region: MAIC
Location: 3MI Racing LLC
Vehicle:
96 bastard child
search FIRST, then PM!!!

Default

the stocker will be fine...how much power are you looking to put down?...that is the true question...how much torque?...

if you get a lot of power, your clutch will slip...or so goes the plan....it adds a factor of safety...
Homemade WRX is offline   Reply With Quote
Old 02-10-2006, 05:53 AM   #10
Kotir
Scooby Specialist
 
Member#: 17300
Join Date: Apr 2002
Chapter/Region: NWIC
Location: Eugene, OR
Vehicle:
1993 Widebody Wagon
625whp e85

Default

I toasted the organic Exedy Street RS clutch with like probably 10 good launches with the Ver8 Swap Although I did run it on the RS-T (12psi T3 on stock RS motor for like 20k before that)

Added 6 puck sprung friction disk to the Exedy street pressure plate

Worked for awhile before I decided to beat the crap out of it

I didn't break a gear, but it'll pop out of 1st if I rev and try to launch it...

Not sure if it was the 10 or so AWD burnout launches I did on the drag strip before that or the flatfoot shifting... who knows

I think with an organic non puck clutch + some common sense it should last for awhile atleast

I'm only made like 240tq on a Mustang dyno - EJ257 should be good for quite a bit more

I'm still driving on the RS tranny that grinds going into any gear but reverse, likes to pop out of 1st and 2nd gear, and sounds like a jet landing according to my friend. 120k miles (about 40k with nitrous, turbokit or STi swap but all abused) I think it'll probably give up soon

-Tim
Kotir is offline   Reply With Quote
Old 02-10-2006, 08:30 AM   #11
XENONSVX
Scooby Newbie
 
Member#: 41719
Join Date: Aug 2003
Chapter/Region: MWSOC
Location: LANSING, MI
Vehicle:
XT, SVX, JUSTY &
GF8 STI V4 RA

Default

I've got a 6 puck ceramic clutch disk w/ my stock L pressure plate & flywheel, running my stock L trans...no problems yet

My buddy has a wrx w/ a lil over 80k on it, still the stock trans w/a 2.2 hybrid...

Just leave your stock trans, dont drive it like a jackass and it'll stay around for a while
XENONSVX is offline   Reply With Quote
Old 02-10-2006, 12:33 PM   #12
Kreeger
Scooby Specialist
 
Member#: 37558
Join Date: May 2003
Chapter/Region: South East
Location: Atlanta, GA
Vehicle:
2003 TS wagon
JDM bukkake white

Default

Like others said... the stock RS/TS tranny is fine. I am at 330whp with my version 7 swap and have been running it for over 2 years and 22,000 miles.

BTW, I started out with the Exedy clutch but it slipped so bad... even with the motor stock (280-ish fly-whp) so I went with a SPEC cerametallic clutch and it holds up great.
Kreeger is offline   Reply With Quote
Old 02-10-2006, 12:55 PM   #13
MixeD_MenacE
Scooby Specialist
 
Member#: 1274
Join Date: Apr 2000
Chapter/Region: W. Canada
Location: Winnipeg
Vehicle:
MY00 BRP 2.5RSTi
www.zucru.ca

Default

sounds like the stocker should work out fine for atleast this season of auto-x. This year the motor will remain relatively stock (except for exhaust and possibly up pipe). No plans for power upgrades until the driveline gets redone.

more thoughts people? I really appreciate the help! I'm anxious to show you guys what I've been up to this past while.
MixeD_MenacE is offline   Reply With Quote
Old 02-11-2006, 05:07 AM   #14
Skully
Scooby Newbie
 
Member#: 48990
Join Date: Nov 2003
Location: Sweetwater Tennessee
Vehicle:
98 Impreza RS
RBP

Default

Im running a 2000 Legacy GT tranny in my 98 RS. My old turbo kit i made 320awhp @ 16.5psi of boost. Since then i have refabbed a new up/down pipe and the car has ALOT more torque now. I will be taking it to the dyno soon i hope. Im running a Spec Stage 3+ clutch. The clutch is rated @ 525 ftlbs. and holds awsome. No tranny problems as of yet.

-Thomas
Skully is offline   Reply With Quote
Old 02-12-2006, 05:20 PM   #15
RS_to_WRX_swap
Scooby Specialist
 
Member#: 40337
Join Date: Jul 2003
Chapter/Region: BAIC
Location: Bay Area
Vehicle:
95 L Coupe Swapped
99 Outback

Default

My tranny is still alive with over 160,000 miles. It's got to give up the ghost soon.
RS_to_WRX_swap is offline   Reply With Quote
Old 03-03-2006, 03:13 PM   #16
powerlabs
Scooby Specialist
 
Member#: 45790
Join Date: Oct 2003
Chapter/Region: Tri-State
Location: New Jersey
Vehicle:
2006 Corvette C6 Z51
SUPERCHARGED

Default

I broke my tranny twice. The first time the 5th gear hub nut backed off. There was a service bulletin out on it but I didn't make it to the dealership.
Second time I sheared off all the teeth in 2nd gear shifting hard. This was on the stock 2.5L engine.
I have about 18000 miles on the swap and have managed a 0-60 time of 4 seconds flat and a 1/4 mile of 12.6 @113 with a full tank and a passenger on the stock tranny and a Spec Stage 3 6 puck kevlar clutch. The turbo motor isn't as bad on the tranny because it doesn't make as much torque off boost or down low, but I am looking at upgrading soon; I know it won't last forever. Subaru transmissions are crap. But if you baby them, they'll hold. For me keeping the stock tranny was simply a money issue.
powerlabs is offline   Reply With Quote
Old 03-03-2006, 04:55 PM   #17
Matt Monson
Scooby Guru
 
Member#: 832
Join Date: Jan 2000
Chapter/Region: RMIC
Location: Teh Ghetto Garage, CO
Vehicle:
99 2.5RS, '85 911
'73 914 and 2012 BRZ

Default

My 2 cents is to stay away from pucked clutches if sticking with your stock tranny. Those suckers put one hell of a load on the tranny. I personally would rather have the clutch slip at the limit more than my gears slipping.

I work for a Porsche tranny shop, and the one thing we see more often than anything else on high powered cars is downshifts damaging the trannies. With a high powered car and some wide rubber, downshifting into 2 or 3rd gear and hitting 7000rpms is one hell of a shock load on the system. So, in addition to the advice about not launching, feather your downshifts as well...
Matt Monson is offline   Reply With Quote
Old 03-03-2006, 10:54 PM   #18
ballitch
Scooby Specialist
 
Member#: 74907
Join Date: Nov 2004
Chapter/Region: NWIC
Location: salem, OR
Vehicle:
98 cam'd EJ251
Wrx Tranny,slowr than ish

Default

dont slam the gears. and ease on the throttle. those will help alot. NO AWD burnouts. if you feel you got beaten by that honda real bad, ask him to follow you on the twistys....
ballitch is offline   Reply With Quote
Old 03-04-2006, 12:58 PM   #19
Slack
Scooby Specialist
 
Member#: 17548
Join Date: Apr 2002
Location: Atlanta, Ga
Default

An exedy organic should be fine. The pressure plate only has 29% more clamping force, so with proper shifting and clutch work your stock transmission should last you long enough to get that 6mt you're slobbering over.


Mick
Slack is offline   Reply With Quote
Old 03-04-2006, 04:43 PM   #20
sheepdog
Scooby Specialist
 
Member#: 93773
Join Date: Aug 2005
Chapter/Region: RMIC
Location: Boulder, CO
Vehicle:
1995 Flat Khaki GC8
2011 STi Wagon

Default

My buddy blew 2nd in his stock RS trans with an EJ20G pretty stock, autocrossing.
sheepdog is offline   Reply With Quote
Old 03-04-2006, 10:39 PM   #21
powerlabs
Scooby Specialist
 
Member#: 45790
Join Date: Oct 2003
Chapter/Region: Tri-State
Location: New Jersey
Vehicle:
2006 Corvette C6 Z51
SUPERCHARGED

Default

Quote:
Originally Posted by Slack
An exedy organic should be fine. The pressure plate only has 29% more clamping force, so with proper shifting and clutch work your stock transmission should last you long enough to get that 6mt you're slobbering over.


Mick
I will have to disagree with that. My Exedy organic didn't last a month post swap, and I never launched the car a SINGLE time with it.
I think it would be ok for a bone stock US WRX swap, and that's about it.
powerlabs is offline   Reply With Quote
Old 03-05-2006, 08:22 AM   #22
Kreeger
Scooby Specialist
 
Member#: 37558
Join Date: May 2003
Chapter/Region: South East
Location: Atlanta, GA
Vehicle:
2003 TS wagon
JDM bukkake white

Default

Quote:
Originally Posted by powerlabs
I will have to disagree with that. My Exedy organic didn't last a month post swap, and I never launched the car a SINGLE time with it.
I think it would be ok for a bone stock US WRX swap, and that's about it.

+1... My Exedy clutch would slip anytime I got on it at all. I remember once (less than a month after my swap) I was at a light and wanted to get the jump on traffic because the lane merged ahead. When the light turned green, I revved to about 3k and slipped the clutch but DID NOT drop it. It slipped so bad, the car just sat there as I revved... the clutch fully out... I was barely moving.

YES, the clutch was adjusted properly (by a master Subaru mechanic of 20 years... the same guy who did the swap) and my version 7 motor was still at the stock, untuned power level. The main component of the clutch's failure to hold power is that the pressure plate pressure rating is frikkin wimpy as hell. You want something like 2300lb clamping force and up.

Go with an ACT clutch. They have the best PP for the RS tranny. Even my SPEC clutch slips now from time to time.
Kreeger 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
FS SoCal: BNIB Exedy Organic, slightly used Exedy Organic, slightly used OEM Flywheel Lazyxturb0 Drivetrain 36 09-12-2008 09:45 PM
ver 6 sti trans + stock 2.5 RS trans gear swapping questions. pearl Transmission (AT/MT) & Driveline 0 02-26-2008 07:09 PM
Exedy organic clutch scoobyimprza Private 'For Sale' Classifieds 1 12-14-2003 01:54 PM
FS: New Exedy Organic Clutch Kit teiva-boy Private 'For Sale' Classifieds 5 12-04-2003 02:11 PM
Exedy organic clutch slip Mikanical Transmission (AT/MT) & Driveline 8 10-23-2003 11:26 AM


All times are GMT -4. The time now is 08:45 PM.


Powered by vBulletin® Version 3.7.0
Copyright ©2000 - 2015, Jelsoft Enterprises Ltd.
Powered by Searchlight © 2015 Axivo Inc.
Copyright ©1999 - 2015, North American Subaru Impreza Owners Club, Inc.