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Old 07-24-2003, 02:18 PM   #1
deadbolt
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Default Warning to those considering the "STI" Pressure plate and clutch

A warning to those considering the STi branded pressure plate and flywheel:

Apparently these two parts are designed ONLY to be used with the STi flywheel. We have been battling an issue now with both the early AND late production 2.0 WRX flywheels not working properly with this setup.

The car has gone through 3 setups now:

BPM Flywheel + stock pressure plate stock disc = OK

Stock Early Flywheel + STi pressure plate and disc = Shudder and slip

Stock Late Flywheel + STi pressure plate and disc = Shudder and slip

Stock Late Flywheel + Stock Late Pressure plate and disc = OK

If you are planning on doing the STi pressure plate and disc, I would advise the STi flywheel as well. The distance from the mating surface on the pressure plate to the flywheel differs by 2mm from the STi pressure plate to the stocker.
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Old 07-24-2003, 02:44 PM   #2
North Ursalia
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The MRT flywheel works with the STi disc and PP if anyone is interested in knowing .


Brian
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Old 07-24-2003, 07:31 PM   #3
PaulRex
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I'm using the STI organic clutch disc(for a 5MT) and an STI type RA pressure plate (from a 5MT) and I had alot of shudder and slip also before it broke in. Now it's alot smoother.. grp. N tranny/engine mounts also helped considerably.

You are refering to using a 6MT pressure plate and clutch in a 5MT? I know some people have been doing this lately
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Old 07-25-2003, 06:40 AM   #4
deadbolt
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Quote:
Originally posted by PaulRex

You are refering to using a 6MT pressure plate and clutch in a 5MT? I know some people have been doing this lately
No this is the US spec 5-spd STi "branded" stuff.
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Old 10-17-2003, 02:00 PM   #5
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would the sti fly wheel have an issue with the updated clutch and presure plate?
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Old 10-17-2003, 02:03 PM   #6
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Quote:
Originally posted by gotsol
would the sti fly wheel have an issue with the updated clutch and presure plate?
I don't know about the STi flywheel, I do know that none of the STi parts work without the STi flywheel, not even either of the two stock WRX flywheels.
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Old 10-21-2003, 07:48 AM   #7
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hummm, thanks Jerry.

So by logic one would think that it wouldn't work or would it?

stock flywheel + sti pats = bad

sti fly wheel + stock parts = ?
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Old 11-07-2003, 12:04 AM   #8
Recce03
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I installed a STI flywheel, clutch, and cover. Shuddered from the beginning w/ late pedal engagement, and started slipping at 5000. I'm a little dissappointed.

Martti
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Old 10-05-2005, 10:22 AM   #9
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Quote:
Originally Posted by Recce03
I installed a STI flywheel, clutch, and cover. Shuddered from the beginning w/ late pedal engagement, and started slipping at 5000. I'm a little dissappointed.

Martti
GravelCrew
Me too. I guess I am not the only one who had a problem. Makes me feel a little better. I have to replace clutch and PP at 20k. I am more than a little disappointed.

I am sure that some of it is my crappy driving...
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Old 10-06-2005, 06:57 PM   #10
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I was looking at the Exedy 'sti' clutch on rallispec made for the US WRX 5 speed. They have it listed as the correct clutch for the 230mm flywheel. Is this the one you are talking about Jerry?

Exedy Sport Clutch: Provides 27% more clamping power than stock. This is the same clutch used on 1998 and newer STi models from the factory. Includes throw out bearing. Does not include flywheel.

Now with that being said. My friend Ali has a JDM MY95 WRX. When I called Rallispec they said we could use a US spec MY02 clutch in it if we also used the MY02's flywheel. We ordered a Spec stage II clutch and flywheel for a MY02 WRX. Installed it and it never really worked. The clutch fork rubbed the pressure plate. Ended up pulling it all back out and replaced it with a Exedy Hyper single.
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Old 10-07-2005, 02:37 PM   #11
Tuned
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I dumped my STi Clutch, PP and Flywheel. I installed the ACT HD Street Clutch with Streetlight Flywheel. It is so much better than the Sti isht it's not funny. It's not even close. And less money too (as I watch over 1k in STi parts go down the drain after 20k)

I've now driven the ACT clutch/flywheel combination for 40 miles. I know that's not much, but I can't tell you what a difference it has made with the car. Together with the RA Gearset, I am so much happier with my car. This is the way the car should have come from Subaru!

Last edited by Tuned; 10-07-2005 at 05:02 PM. Reason: Additional venting on STi clutch, PP and flywheel
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Old 02-27-2006, 08:55 PM   #12
mariobelmondo
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Default clutch

i second that. blew 1200.00 on an STI clutch, clutch cover and flywheel only to find that the setup was totally non streetable and a total pain in the ass as far as engagement/shudder. ran it for 3 days, paid for a new OEM wrx clutch and flywheel, and then paid for a second installation within 3 days of the sti clutch install. total cost was about 3,000.00 factoriing in both installs and in the end all i have is a stock clutch and a STI unit sitting in my garage. STI clutches are f***ing crap.


~mario~
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Old 02-28-2006, 07:16 AM   #13
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It's now been many thousand miles since I installed the ACT set-up vs the STi.

The difference is laughable. I hope those of you considering the STi stuff will be smarter than we were. Don't buy the STi clutch, cover and PP for the WRX. It doesn't work!
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Old 02-28-2006, 11:49 AM   #14
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Default clutch/flywheel

certainly doesnt work and im really not sure why its being marketed by subaru at all. i actually tried to get some kind of refund for this item but it was bought from renicksubaru in cali.....they said to call subaru direct because it wasnt their problem, they also said they hadnt heard of anyone having problems with this setup. called subaru and they said it wasnt a subaru product it was technically an STI product, the sports division out of japan so they really couldnt help me. they also noted that the part has a disclaimer that its for offroad use only. i fould that a little misleading then, that the clutch is called a heavy duty STREET clutch. its a street clutch for offroad use. offroad streets, you know......
what the fu** is that all about. i eventually just gave up and its been in my garage ever since. im still paying on my credit card for the damn thing. anyone have any ideas what i could do with it.
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Old 02-28-2006, 12:30 PM   #15
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I'm still trying to get rid of the resurfaced STi flywheel in my garage. Any takers?
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