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Old 02-20-2014, 10:26 PM   #101
2slofouru
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Sorry I can't remember which, but it surprised me. I was messaging several sellers trying to get specs and many didn't know squat.
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Old 06-07-2014, 08:31 AM   #102
V8 GTFO Lesbic WGN
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An important factor is knowing which of these require an specific FW, if price is important in the decision making.
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Old 06-08-2014, 01:03 AM   #103
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ZERO clutches require a specific flywheel as they don't care. The only rule of thumb is if you are smart enough to want a lightweight one, you should match say Exedy to Exedy and not Exedy to ACT as no brand recommend missmatching brands. That may be marketing BS though.
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Old 06-08-2014, 04:07 AM   #104
2slofouru
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The seller could have been uninformed and gave me incorrect information. The website (competition clutch) was also incomplete (as it still is) so legit information was pretty much impossible to find. I decided on another setup to stay reliable and streetable and it is sufficient for now. I likely will upgrade again once I've installed the "final" three parts before the tune, it just sucks not being able to see how different clutches perform without being able to experience them in person. There are practically zero people with a setup close enough distance wise and close enough to what my vehicle will be soon to be able to compare.




Quote:
Originally Posted by Unabomber View Post
ZERO clutches require a specific flywheel as they don't care. The only rule of thumb is if you are smart enough to want a lightweight one, you should match say Exedy to Exedy and not Exedy to ACT as no brand recommend missmatching brands. That may be marketing BS though.
That statement is very difficult to for anyone to prove or disprove because there are too many variables, so its easy to make. I believe "matching" a flywheel to clutch is hit and miss mainly because of weight differences, because if they are machined to the same tolerances and measurements they should physically maintain all of the same dimensions as oem. Of course with so many sellers and so many brands its tough to get all of the pertinent details and some of us would rather be driving the car than having it sit in a garage for years deciding on the perfect setup. I use my car nearly every day so its tough getting enough FACTUAL vs opinionated information to make an "informed" decision in a timely manner. I'd rather be driving and enjoying my car than letting it rot away though so sometimes wasting a little more money is better than wasting a lot of time.

Last edited by 2slofouru; 06-08-2014 at 04:16 AM.
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Old 06-12-2014, 10:21 AM   #105
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The clamping force ratings for the Sti branded clutch plates, in the SPT catalog, are the same as the ones form Exedy, at least for the 5 speed.
For the same clutch plate rating, Exedy shows the same clutch torque rating.

This applies for the 5 speeds. Then the 6 speeds have larger torque holding capacity, for the same clamping force by the plate.

The clutch torque that Exedy lists, is the torque needed to be applied to a disc (say on an engine dyno), to have it completely spin over, while engaged. It's an industry standard, I think.

I think that the flywheel torque listed, is the correct value, to be referenced.
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Old 06-16-2014, 04:33 PM   #106
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Hi Guys,

I'm from NZ, so I'm not sure if my car is a bit different (import from jap i believe).
This site is my car:

http://www.carjam.co.nz/car/?plate=dlm447

its an 02 WRX (i believe STi, as it has a lot of STi things in it.).
Its Turbo Manual, 2L. 5 gears + Reverse (is that a 5 or 6 speed)?

I have found these two clutches and am wondering if they will work. They say they will work with the WRX, but nothing about the STi version.

http://www.rallysportdirect.com/Exed...acement-Clutch

and

http://www.rallysportdirect.com/Exed...acement-Clutch

I have searched the forums but it seems its all talking about the WRX, and not the STi.

I am trying to sources from the states as its a lot cheaper. $250 instead of $650 over here.

Any help is greatly appreciated.

Last edited by cheapshots; 06-18-2014 at 02:39 AM. Reason: updated links
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Old 06-16-2014, 09:56 PM   #107
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Get the transmission ID of the sticker on the transmission. http://rallispec.com/tech.html This will tell you if its push or pull type, in case someone has swapped it for a different type.
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Old 06-17-2014, 02:20 AM   #108
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ok ill see if i can get under it.

just seems odd that there is hardly any mention of an 02 WRX STi, so just wanting to make sure.

EDIT:
my chassis number starts GGB. Oakos.com/wrx/chassis_codes.htm states it's a "new age" wrx sti sports wagon, which isn't avaliable in the US.

This is getting too confusing :/

And to make it worse I do think the transmission has been swapped as my reverse light don't work. The electrician said because the plugs weren't connected as the end were different. Meaning a swap?

EDIT 2:

So this link shows my car as being 6 speed. but i know its only 5 speed. meaning they have changed this.
so its now impossible to tell what i need unless i open her up?
http://www.spec-c.co.uk/what-model-is-my-impreza/
STi Sportswagon GGBB5EH TY856WB1AA EJ207DW4CR 280 6 speed

And to make it worse I do think the transmission has been swapped as my reverse light don't work. The electrician said because the plugs weren't connected as the end were different. Meaning a swap?

Last edited by cheapshots; 06-18-2014 at 07:29 AM.
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Old 06-27-2014, 02:00 PM   #109
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Quote:
Originally Posted by Unabomber View Post
ZERO clutches require a specific flywheel as they don't care. The only rule of thumb is if you are smart enough to want a lightweight one, you should match say Exedy to Exedy and not Exedy to ACT as no brand recommend missmatching brands. That may be marketing BS though.

Incorrect sir. The Competition Clutches for the 06-14WRX/05-12 LGT all require the Competition Clutch LWFW be used with the clutch.

Competition Clutch manufactures their own pressure plates in house. They do not rework an Exedy. So, the bolt pattern on the pressure plate is not OEM. It will not mount to an OEM FW or any other brand aftermarket FW. Just as the LWFW will not work with any other brand pressure plate, only Competition Clutch.

The Competition Clutch kits are sold and packaged with the required LWFW.

This does not apply to 04-14 STI/07-09 SpecB 6MT or 02-05 WRX 5MT.
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Old 06-27-2014, 03:07 PM   #110
2slofouru
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/\ Thanks for the clarification and for the clutch advice
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Old 09-24-2014, 07:56 AM   #111
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Edit- pls delete

Last edited by TheRealLonestar; 09-25-2014 at 09:46 AM.
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Old 04-09-2015, 10:15 AM   #112
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Hey, if this form is still alive, I could really use some help. I've read through the whole form and did my own research and made the mistake by trial and error of too much clutch. I have a 2010 STI hatchback, when I burnt out the stock clutch, I made the mistake of listening to a friend who suggested I get the competition clutch, stage 3 with LWFW - car was still stock at the time. I can attest, that to aggressive of a clutch is super annoying to drive and I'm sure it was hard on the car. Also, as my car could not take such an aggressive clutch, I've now burnt that clutch out after only 20,000km.

The car is now at stage 2 and will soon make 345 lbs/tq to the wheels. I've narrowed down my clutch choices but looking for a little help with the final decision. Either: Competition clutch stage 2, with their LWFW. Or, Clutch Masters, either their FX 200 or FX 250 with their LWFW. I do track and abuse the car a few times each year, which leads me to believe the FX 250 is the one for me, but really do not want too much clutch again.

Any and all suggestions are much appreciated.
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Old 04-09-2015, 10:27 AM   #113
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One more brand to look into: South Bend Clutch.

stage 1 fjk1000-hd 465 TQ at the fly (roughly 350 to the wheels)
stage 2 fjk1000-hd-0 495 TQ at the fly roughly 375 to the wheels)

I've installed and driven several of their clutches for customers. They have a butter smooth engagement with a pedal stiffness similar to stock. Either can be paired with a Exedy or ACT light weight flywheel.

Sadly, you found out the ceramic metallic discs do not last long with daily driving. Plus, they can be a burden to engage smoothly.

Stephen
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Old 04-09-2015, 10:47 AM   #114
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Hey Stephen,

Thank you I'll check into that one. Though you're just making the decision process harder for me.
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Old 04-12-2015, 12:42 PM   #115
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Many thanks for the list!
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Old 10-16-2015, 02:49 PM   #116
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Default Clutchmaster FX100

If this thread is still alive, I want to know if anyone has the Clutchmaster FX100 and if it indeed took the full recommended 500 miles to break it in. I'm at 200 and it's still pretty rough, very different from my previous stock clutch. I don't race, just a daily enthusiast.
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Old 10-16-2015, 03:39 PM   #117
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I'm curious which of those 2004+ STi Exedy clutches is the stock clutch...

I went through an ACT HD clutch and an Exedy stage 1, both in short time, but went back to stock out of frustration and have several years on the stock clutch and it's still holding great at 311/350 wheel hp/tq.

I'm going to try an upgraded clutch once again when I get the 6MT rebuilt next year and want to figure out what to grab...

Thanks,

-- Dave
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Old 11-19-2015, 12:31 AM   #118
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My mechanic (incredibly reputable tuner shop in WA) talked me out of buying a higher tq rated clutch to replace my stock one and I will instead be doing another OEM clutch with an act lightened flywheel. Car is a 13 wrx, runs 335whp 374wtq on e85 @20.0psi and is just a daily driver. His reasoning is that since I don't race the car besides maybe one autocross a year, the OEM clutch will actually end up lasting the longest. Like a few of the vendors here have implied, he believes the torque capacity of these clutches are highly under valued, and their material lends well to lasting in normal driving conditions. I'm writing all this just to let you guys know what he said and also so I can post results on it down the road.
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Old 11-20-2015, 12:23 PM   #119
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Hey just fyi I spoke with a guy from exedy personally and he listed the exact differences between the OEM replacement clutch and a true OEM clutch from Subaru. Its just the laser engravings and the pilot bearing is just from a different supplier now. In all other respects its exactly the same.
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Old 06-12-2016, 04:40 AM   #120
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Cool Grateful

Thank you Unabomber for your incredible efforts put into all of your FAQs, I always pull up the FAQ off my favourites before buying a new part.

I had the ACT HDSS rated at 420 Torque, It had a break in period and then it was great, but after going from stock power to Cobb Stage 2, it started slipping on the highway in 4th gear. I emailed ACT and they said that the TQ rating at the Wheels is 336, and from online estimates, my car could be around 350 WTQ now. My ACT HDSS pressure plate is grooved, disk is worn to the rivets, and my OEM flywheel has deep cracks and can not be resurfaced.

Unabomber logic: I need to upgrade my clutch, might as well go to a lightweight flywheel, despite some of the negatives.

New clutches available from ACT:

SB11-HDSS 445 ft. lbs at the crank ( 356 wheel)

SB11-XTSS 510 ft. lbs at the crank (408 wheel)

Which clutch do I chose? I need my hard earned Canadian dollars to be spent well My car awaits your suggestions patiently, in the air on jack stands in my garage.


Clutches are cheaper than transmissions.

Last edited by BC_WRX; 06-13-2016 at 02:40 AM.
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Old 06-12-2016, 04:44 AM   #121
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Quote:
Originally Posted by AcquaCow View Post
I'm curious which of those 2004+ STi Exedy clutches is the stock clutch...

I went through an ACT HD clutch and an Exedy stage 1, both in short time, but went back to stock out of frustration and have several years on the stock clutch and it's still holding great at 311/350 wheel hp/tq.

I'm going to try an upgraded clutch once again when I get the 6MT rebuilt next year and want to figure out what to grab...

Thanks,

-- Dave
Didnt you prove to yourself that the Stock Clutch is holding the power for longer than aftermarket? Im in the same dilemma! Why wouldnt you stay with Stock?
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Old 06-12-2016, 12:45 PM   #122
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Quote:
Originally Posted by BC_WRX View Post
Didnt you prove to yourself that the Stock Clutch is holding the power for longer than aftermarket? Im in the same dilemma! Why wouldnt you stay with Stock?
I could stay stock, but I was having issues with stock holding launches at ~10psi from 5000rpm.

I want something that might deal with that a tad better.
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Old 06-13-2016, 02:41 AM   #123
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Quote:
Originally Posted by crepitus View Post
My mechanic (incredibly reputable tuner shop in WA) talked me out of buying a higher tq rated clutch to replace my stock one and I will instead be doing another OEM clutch with an act lightened flywheel. Car is a 13 wrx, runs 335whp 374wtq on e85 @20.0psi and is just a daily driver. His reasoning is that since I don't race the car besides maybe one autocross a year, the OEM clutch will actually end up lasting the longest. Like a few of the vendors here have implied, he believes the torque capacity of these clutches are highly under valued, and their material lends well to lasting in normal driving conditions. I'm writing all this just to let you guys know what he said and also so I can post results on it down the road.

Crepitus: I am in roughly the same situation, I autocross maybe once or twice a year, have around 350 WTQ and daily drive my car in stop and go traffic.

Did you go with an Exedy or OEM Subaru Clutch? Is your car still at 370 Wheel Torque? I have been seeing that a few people over 330wtq are using an OEM clutch, indicating that they are underrated, or just built to withstand more abuse, heat, or slipping than aftermarket. Do you have any information for us who are researching? Are there a lot of people who use OEM clutches with modified WRXs and get a long life out of them!?
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Old 06-13-2016, 12:31 PM   #124
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Try a South Bend. We have had excellent results with them over the past 2 years.
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Old 06-13-2016, 09:52 PM   #125
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Quote:
Originally Posted by Infamous Performance View Post
Try a South Bend. We have had excellent results with them over the past 2 years.
I super super super super try not to play the brand game here for various reasons, but I will say the following sentences has been repeated to me by the biggest names in Subaru cars on the planet:

1. I've had zero issues with South Bend Clutches.
2. I had an issue with a South Bend Clutch and before I could even explain what was going on, I was interrupted with: "Your tracking number is XXXXX" and they overnighted a new clutch to me and told me to shut my pie hole.

Item 2 is the key. Call up *.clutchmaker and say, "I have an issue with..." and be prepared to pull an all nighter to only learn you need to send the clutch back to the maker, PAY FOR their diagnostic testing and if no issues are found, to get told to suck it after a two week period.

South Bend's reply to issues is legit white glove badassery which no other clutch maker comes close to.
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