Welcome to the North American Subaru Impreza Owners Club Thursday March 28, 2024
Home Forums Images WikiNASIOC Products Store Modifications Upgrade Garage
NASIOC
Go Back   NASIOC > NASIOC Technical > Transmission (AT/MT) & Driveline

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.







* As an Amazon Associate I earn from qualifying purchases. 
* Registered users of the site do not see these ads. 
Reply
 
Thread Tools Display Modes
Old 02-03-2004, 04:12 PM   #1
Benjamin Tang
Scooby Guru
 
Member#: 4496
Join Date: Feb 2001
Location: British Columbia Canada
Vehicle:
2009 Forester
red

Default 6spd sti clutch/flywheel in 5spd wrx tranny?

this is my second clutch/flywheel in my wrx, being the replacement for the original which was covered under warranty because of the cold clutch judder issue. well, it's doing it again

i give up. i was holding out hoping all my problems would be solved once i found a 6spd sti swap i could afford, but it's too late now. i've read in some threads of people being able to use the clutch/flywheel/pressure plate from a 6spd in a 5spd wrx, and my cold clutch judder problems will never come back again (i hope)... but there was something about having to grind away portions of the inner bell housing on the tranny i'm not clear on.

can someone walk me thru this?
* Registered users of the site do not see these ads.
Benjamin Tang is offline   Reply With Quote
Sponsored Links
* Registered users of the site do not see these ads.
Old 02-04-2004, 09:40 AM   #2
Billy_H
Scooby Newbie
 
Member#: 34047
Join Date: Mar 2003
Location: Tampa, FL
Vehicle:
02 WRX
Silver

Default

Check RalliSpecs website, they sell the Exedy Sport Clutch which is almost identical to the STi clutch and a hell-uva lot cheaper...oh, and it bolts right on.
Billy_H is offline   Reply With Quote
Old 02-05-2004, 09:25 AM   #3
AZScoobie
Scooby Guru
 
Member#: 8785
Join Date: Jul 2001
Chapter/Region: SWIC
Vehicle:
02 c_turner@ix.
netcom.com

Default

Ben. Give Mike a call at the shop (Kingpin). He installed a 6mt Fly and clutch in his 5mt a while back. I think he said 45 minutes with a die grinder to make it work...

Clark
AZScoobie is offline   Reply With Quote
Old 02-05-2004, 09:31 AM   #4
totoherbs
Scooby Guru
 
Member#: 7321
Join Date: Jun 2001
Chapter/Region: NESIC
Location: waltham, ma
Vehicle:
.... 122 IggPoints
Work... ahhh... so tired.

Default

Quote:
Originally posted by AZScoobie
Ben. Give Mike a call at the shop (Kingpin). He installed a 6mt Fly and clutch in his 5mt a while back. I think he said 45 minutes with a die grinder to make it work...

Clark
Cool..... the STi is like an inch bigger right?
totoherbs is offline   Reply With Quote
Old 02-05-2004, 09:35 AM   #5
AZScoobie
Scooby Guru
 
Member#: 8785
Join Date: Jul 2001
Chapter/Region: SWIC
Vehicle:
02 c_turner@ix.
netcom.com

Default

It only hits in a few places. I saw the grinding work before it was done. Its not that bad and you get a much better clutch.. The fly is heavy though.. Probably a good setup for drag racing. Mike loved the 6mt clutch.

Clark
AZScoobie is offline   Reply With Quote
Old 02-05-2004, 09:40 AM   #6
Benjamin Tang
Scooby Guru
 
Member#: 4496
Join Date: Feb 2001
Location: British Columbia Canada
Vehicle:
2009 Forester
red

Default

does the flywheel have a larger overall diameter? would that mean having to use an sti starter?
Benjamin Tang is offline   Reply With Quote
Old 02-05-2004, 09:41 AM   #7
AZScoobie
Scooby Guru
 
Member#: 8785
Join Date: Jul 2001
Chapter/Region: SWIC
Vehicle:
02 c_turner@ix.
netcom.com

Default

No.. Its thicker and the "weights" hit the bell housing.. Start and every other piece work. Its a direct swap as long as you grind out the housing. Call Mike for info on where and how much grinding.

Clark
AZScoobie is offline   Reply With Quote
Old 02-05-2004, 03:00 PM   #8
Benjamin Tang
Scooby Guru
 
Member#: 4496
Join Date: Feb 2001
Location: British Columbia Canada
Vehicle:
2009 Forester
red

Default

thanks clark... any thoughts on whether i should go and get the stock flywheel machined down for weight?
Benjamin Tang is offline   Reply With Quote
Old 02-06-2004, 12:20 AM   #9
Z1 Performance
Former Vendor
 
Member#: 9327
Join Date: Aug 2001
Location: Z1Auto.com
Default

just fit a proper 5 speed clutch (non OEM) and you'll be fine ...the 6 speed is the same basic unit, only 5mm larger in diameter. 6 Speed clutch works as Clark pointed out, though you have very few options in the aftermarket.
Z1 Performance is offline   Reply With Quote
Old 02-06-2004, 12:25 AM   #10
David Glasscock
Scooby Specialist
 
Member#: 25033
Join Date: Sep 2002
Chapter/Region: NWIC
Location: lakewood wa
Vehicle:
06 sti my $$ pit
05 xt sold

Default

pm'd you
David Glasscock is offline   Reply With Quote
Old 02-06-2004, 06:26 PM   #11
Benjamin Tang
Scooby Guru
 
Member#: 4496
Join Date: Feb 2001
Location: British Columbia Canada
Vehicle:
2009 Forester
red

Default

can u recommend a driveable 5spd clutch and flywheel setup? i've gone thru so many aftermarket clutches in the past and have had mixed results, from bear traps that made my left leg bigger than the right, to poor reliability.

the other reason i'm kicking this around is because i can find cheap low mileage used 6spd sti clutch/flywheels for $200.... still need a bearing though. and then the cost to install... grinding... i just want this cold chatter to end!
Benjamin Tang is offline   Reply With Quote
Old 02-06-2004, 06:46 PM   #12
Z1 Performance
Former Vendor
 
Member#: 9327
Join Date: Aug 2001
Location: Z1Auto.com
Default

Well, let me know what you have had so far on your Subaru that you were not pleased with so we can narrow down a list
Z1 Performance is offline   Reply With Quote
Old 02-06-2004, 07:13 PM   #13
Benjamin Tang
Scooby Guru
 
Member#: 4496
Join Date: Feb 2001
Location: British Columbia Canada
Vehicle:
2009 Forester
red

Default

not subaru but on my previous hondas and acuras that i've owned... act, clutchmasters, exedy.
Benjamin Tang is offline   Reply With Quote
Old 02-07-2004, 01:12 PM   #14
Kingpin
Vendor
 
Member#: 41252
Join Date: Aug 2003
Chapter/Region: SWIC
Location: 602-795-3036
Vehicle:
Twin 2005 600WHP
FormulaD/TimeAttack Sti's

Default

Hey Ben,
As Clark mentioned I dropped a 6spd clutch in my 5spd last year. I had already tried several aftermarket clutches and didn't find anything that I liked. The 6spd is inexspensive and is a great replacement. We usually carry them for $300 with flywheel. Let me know if oyu are interested. Thanks.

Mike
Kingpin is offline   Reply With Quote
Old 02-07-2004, 01:26 PM   #15
Benjamin Tang
Scooby Guru
 
Member#: 4496
Join Date: Feb 2001
Location: British Columbia Canada
Vehicle:
2009 Forester
red

Default

mike... how bad is this heavy flywheel issue? is it something i can machine the flywheel to lighten it up, or....?
Benjamin Tang is offline   Reply With Quote
Old 02-08-2004, 03:46 AM   #16
Chaste Automotive
Vendor
 
Member#: 44921
Join Date: Oct 2003
Location: Los Angeles
Default

We hvae two different clutches for STi 6 speed, Alcon and AP if you are interested. Exedy are are the exact same as the STi clutches.
Chaste Automotive is offline   Reply With Quote
Old 02-08-2004, 12:44 PM   #17
Kingpin
Vendor
 
Member#: 41252
Join Date: Aug 2003
Chapter/Region: SWIC
Location: 602-795-3036
Vehicle:
Twin 2005 600WHP
FormulaD/TimeAttack Sti's

Default

You might be able to machine this but I have not tried. I left mine stock and had no problems with it. Aftermarket flywheels are available for this setup if you prefer. Thanks.
Kingpin is offline   Reply With Quote
Old 02-18-2004, 11:37 AM   #18
Benjamin Tang
Scooby Guru
 
Member#: 4496
Join Date: Feb 2001
Location: British Columbia Canada
Vehicle:
2009 Forester
red

Default

is it possible to reuse the wrx flywheel bolts?
Benjamin Tang is offline   Reply With Quote
Old 02-18-2004, 01:56 PM   #19
AZScoobie
Scooby Guru
 
Member#: 8785
Join Date: Jul 2001
Chapter/Region: SWIC
Vehicle:
02 c_turner@ix.
netcom.com

Default

Yep. Just use a drop of locktite and trq down.

Clark
AZScoobie is offline   Reply With Quote
Old 03-06-2004, 06:10 PM   #20
myton78
Scooby Newbie
 
Member#: 35215
Join Date: Apr 2003
Location: MI
Vehicle:
2002 WRX
WRB

Default

What about stock wrx clutch and heavier flywheel (I dunno what flywheel though.) Will this cure the judder?

Kingpin for the 6spd mod, what area needs to be machine in this picture?
http://www.oakos.com/wrx/gallery/gearbox/IMG_5403.JPG

all pics located http://www.oakos.com/wrx/gallery/gearbox/index.htm

Last edited by myton78; 03-06-2004 at 06:19 PM.
myton78 is offline   Reply With Quote
Old 03-06-2004, 06:44 PM   #21
Kingpin
Vendor
 
Member#: 41252
Join Date: Aug 2003
Chapter/Region: SWIC
Location: 602-795-3036
Vehicle:
Twin 2005 600WHP
FormulaD/TimeAttack Sti's

Default

Well not the best picture for this. You basically need to shave down the ribs on the inside of the bell housing and a bit of the area up by the starter whole.

This pic is better.


Last edited by Kingpin; 03-06-2004 at 06:50 PM.
Kingpin is offline   Reply With Quote
Old 03-07-2004, 10:24 AM   #22
myton78
Scooby Newbie
 
Member#: 35215
Join Date: Apr 2003
Location: MI
Vehicle:
2002 WRX
WRB

Default

Quote:
Originally posted by Kingpin
Well not the best picture for this. You basically need to shave down the ribs on the inside of the bell housing and a bit of the area up by the starter whole.

This pic is better.

thx
myton78 is offline   Reply With Quote
Old 03-07-2004, 10:43 AM   #23
Gfunk720
Scooby Guru
 
Member#: 42549
Join Date: Aug 2003
Chapter/Region: Tri-State
Location: You can find me in the 203
Vehicle:
E92 M3
B9 Audi SQ5

Default

Now I know there is reasoning behind this, but if the Exedy plate is the same as the STI, why grind the hell out of your bell housing?
Wouldnt it just make more sense to use the properly sized clutch/flywheel? Or it there some difference in feeling that can be noticed?
Gfunk720 is offline   Reply With Quote
Old 03-07-2004, 12:22 PM   #24
Kingpin
Vendor
 
Member#: 41252
Join Date: Aug 2003
Chapter/Region: SWIC
Location: 602-795-3036
Vehicle:
Twin 2005 600WHP
FormulaD/TimeAttack Sti's

Default

The reason that I had gone to this combo when I had my 5spd were as follows:

1. The STi unit is much beefier than the USDM version and I was putting down enough power to make this a concern.

2. I had been thru the aftermarket excedy full face unit as well as several other clutches. The heavier duty of which held the power but were a nightmare to drive on a daily basis. On the other end the full face units I was tearing thru. This was a good compromise of both.

3. Cost. Very inexspensive and at the time that was a concern.

4. Availability. There was one in the shop.

I really liked the feel and holding power of the STi unit. I of course eventually went to the 6 spd and still use the stock STi unit with that. This isn't for everybody, but it worked well for my situation. Thanks.
Kingpin is offline   Reply With Quote
Old 03-07-2004, 04:29 PM   #25
Benjamin Tang
Scooby Guru
 
Member#: 4496
Join Date: Feb 2001
Location: British Columbia Canada
Vehicle:
2009 Forester
red

Default

what kingpin said... having had heavier-duty aftermarket clutches on previously owned cars,i don't want to be walking around with my left leg being bigger than my right
Benjamin Tang 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
WTT: 6SPD STI Tranny for a 5SPD WRX Tranny crav3s2k MAIC Private Classifieds 30 09-10-2009 11:08 AM
06 clutch/flywheel in 02 wrx Boarder325 Transmission (AT/MT) & Driveline 2 11-04-2008 07:35 PM
06 Sti swap on a 5spd wrx tranny AlmirWRX Factory 2.5L Turbo Powertrain (EJ Series Factory 2.5L Turbo) 5 05-03-2008 11:36 PM
sti 6 spd clutch &flywheel in 5spd wrx trans ECUtuneOne Transmission (AT/MT) & Driveline 9 09-06-2006 07:34 PM
6spd clutch/flywheel in 5spd transmission OneArmedScissor Transmission (AT/MT) & Driveline 1 12-21-2005 12:05 AM

All times are GMT -4. The time now is 01:48 PM.


Powered by vBulletin® Version 3.7.0
Copyright ©2000 - 2024, Jelsoft Enterprises Ltd.
Powered by Searchlight © 2024 Axivo Inc.
Copyright ©1999 - 2019, North American Subaru Impreza Owners Club, Inc.

As an Amazon Associate I earn from qualifying purchases.

When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission
Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.