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Old 09-18-2009, 01:52 PM   #51
AKAgeorge
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bump..
this thread should be a Sticky
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Old 10-01-2009, 10:45 AM   #52
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I have a 04 STi I need to change the cluth next week.
I want to make 300-400 HP daily drive car and also want the Clutch to life longer..
What clutch Do I need?????????????
any comment, advice please..
thank you .............

Last edited by madsti510; 10-01-2009 at 10:54 AM.
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Old 11-04-2009, 06:00 PM   #53
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madsti510- With a projected 300-400 wheel hp mark (pretty broad) we have found the following clutches to work with good results:

ACT Xtreme - hb4-XTSS. Organic based and easy to daily drive. If you want to go a bit more hard core then you can do their sprung 6 puck HD version, takes a few days to get used to daily driving this unit.




Clutchmasters or Competition Clutch (very similar in look and claimed holding power)- Segmented Kevlar. We've run these in EVOs mainly, but results have been good thus far.
Clutch Masters


Competition Clutch


Exedy- 15802HD, rated at 402 wheel TQ. Organic disc.


Hopefully this will help. If purchase is needed feel free to contact us or any other vendor on Nasioc. I figure we'd chime in since these suggestions are from local/real world setups.

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Old 12-13-2009, 11:52 PM   #54
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I just picked up a used 05 STi with 57,000 miles that puts down around 330whp and 380wtq on a mustang dyno. The clutch slips around peak torque quite easily in 6th gear on the highway. I'm looking to get a sprung street clutch good for daily driving and occasional hard use. The Exedy 15802HD looks about right for my needs.
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Old 12-14-2009, 12:06 AM   #55
IA Performance
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wjfawb0- The HD version should fit your application nicely. My next suggestion would be ACT XT HDSS. The ACT setups tend to have a smoother engagement than Exedy. We have both in stock ready to ship if desired. Feel free to drop a shout if you have any other questions regarding this setup.

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Old 01-18-2010, 11:36 AM   #56
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Those numbers are at the wheels then listed on the first page rather then at the crank as it is highlighted in red?
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Old 01-18-2010, 01:12 PM   #57
IA Performance
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I believe it is a mix of Wheel and Flywheel ratings. Unfortunately, each manufacturer does it differently. You would need to visit each website to see if they used wheel or Flywheel ratings. Alternatively, you may contact a reseller company(like us or anyone else on here) and ask them if they know. Off the top of my head I know the following:
Exedy = Gives both, although not on this forum link
ACT = Flywheel

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Old 01-18-2010, 11:00 PM   #58
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[quote=IA Performance;28720343]madsti510- With a projected 300-400 wheel hp mark (pretty broad) we have found the following clutches to work with good results:

^Shouldn't that be TQ not HP. I believe you measure in TQ when speaking of clutches.
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Old 01-19-2010, 03:49 AM   #59
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sure, TQ will work Each manufacturer measures them differently. HP is extracted from TQ. It just depends which angle you look at it with.

Stephen
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Old 01-31-2010, 09:33 AM   #60
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It seems the ACT SB3-HDSS is missing from the 1st page.

TQ capacity is 411 according to:

http://www.gripmotorsports.com/pi~pn...late-2373.html

It seems to be the best choice for a DD with up to that TQ level from what I read on IWSTI and SubaruForester.org.

On that note, who can ship me one to Australia for a great price? PM me.
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Old 01-31-2010, 11:00 AM   #61
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PM on your way. Not sure if it is a great price, but it is a price quote none the less Clutches are heavy..

Stephen
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Old 01-31-2010, 12:46 PM   #62
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Any chance of the 2006-2007 WRX's being updated? There are a lot more clutches on the market or have been released since this thread.
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Old 01-31-2010, 01:47 PM   #63
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This thread was updated this year. If you find something has changed, post it and I will update the thread as I don't have time to update this every time a manufacturer changes info.
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Old 01-31-2010, 04:02 PM   #64
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Quote:
Originally Posted by IA Performance View Post
PM on your way. Not sure if it is a great price, but it is a price quote none the less Clutches are heavy..

Stephen
Thanks Stephen and that IS still a great price plus a fast reply

Decided to go for a 6 speed clutch now, SB4-HDSS.

I can't PM for soem reason, database error message, could you please send me an email to stevenkelby at hotmail.com for the
SB4-HDSS?

Thanks,

Steve


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Old 02-04-2010, 12:18 PM   #65
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Default ACT clutches VS F1.... Differences

Ok.... I'm a NOOB and tried searching for this...
I have an '02 WRX soon to be stage 2 and I am in need of a new clutch.

Decided on the ACT SB3-HDSS version. Just for comarison on prices, I shopped on ebay. Why is it that I see so many F1 clutches also listed as ACT brand!? The logo even looks the same along with the color and style! They are a bout $100 cheaper. Are they a cheaper Chinese version? Are they made in the same factory??

I have heard good things about the ACT kits and I wnat one but I'm almost to the point of ordering an Exedy just make sure of what I'm ordering!

Thanks....
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Old 02-04-2010, 05:33 PM   #66
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Stop searching and start READING. Look at post #1. It talks about torque, torque, and torque. So since you did not post your torque.....me, every vendor here, Jesus, and the Dalai Lama cannot help you. You take your torque level, plug it into the torque levels listed for each clutch and buy the damn thing. It's not rocket science, there's about the same amount of thought required in buying a clutch as there is in deciding if you want to salt your fries with lunch. If you buy your clutch off of eBay, you will end up with epic failure.
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Old 02-04-2010, 07:24 PM   #67
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Relax and take a deep breath... I don't believe in manufacturers claims. The specific version I mentioned was not in your list. Maybe it is the same as other models you listed but I am comparing ABC version to ABC and not to CBA's. I am not a clutch expert and that is why I'm here.

I would like to think you are not advising people to look at torque figures alone as there are a lot more variables that just torque. I know your smarter than that.

Reason for my posting is because I specifically asked a vendor on this site for a specific request and was given a version that looked like and had almost the same name as the one I am interested in. That brings me back to the original question that really doesn't matter anymore.... lol

I do appreciate the time and research you have provided us. Thanks..
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Old 02-04-2010, 08:37 PM   #68
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You don't get it. You never will. There is no help for you, so I wish you luck in spinning the wheel 'o clutches. I have literally spoken to every manufacturer of Subaru clutch on the planet earth. You doubting my advice is epic fail times infinity, but 'tis your right.
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Old 02-05-2010, 07:07 PM   #69
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I have an 04' STi and my clutch is about toast. A friend of mine has a 2007 STi clutch for sale. Will she fit? Same spline count?
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Old 02-07-2010, 10:38 AM   #70
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Id skip the F1 clutchs their not the top quality your assuming, id also avoid spec from personal experiences and a couple local guys have also burned through one at barely over a year of daily drives.
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Old 02-18-2010, 12:12 AM   #71
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Quote:
Originally Posted by Unabomber View Post
You don't get it. You never will. There is no help for you, so I wish you luck in spinning the wheel 'o clutches. I have literally spoken to every manufacturer of Subaru clutch on the planet earth. You doubting my advice is epic fail times infinity, but 'tis your right.
Did you ask them each how they did their torque capacity testing, so that the numbers you published here are all apples-to-apples comparisons?

Last edited by NSFW; 02-18-2010 at 04:32 AM.
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Old 02-18-2010, 08:25 AM   #72
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Well sure. All the clutches listed are apples to apples except for one manufacturer that rates their torque on WHEEL torque, all other manufacturers do it at ENGINE torque. I am missing one manfucturer and I really need to add them to this, but I've been lazy.
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Old 02-18-2010, 12:05 PM   #73
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kudos for taking the time make this thread very helpful
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Old 02-18-2010, 06:28 PM   #74
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"Exedy 15804 287"

I have this clutch and I've been running it with 396wtq with no issues. I don't launch with it, but it has been holding up great. These ratings are far more than conservative.

Also, I was tuned on a dynojet. So if you go with Unibomber's %27 average dyno-jet loss. That would put me over 500tq at the crack. Im confused.

Last edited by iRace559; 02-18-2010 at 06:34 PM.
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Old 02-19-2010, 12:32 AM   #75
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Quote:
Originally Posted by iRace559 View Post
"Exedy 15804 287"

I have this clutch and I've been running it with 396wtq with no issues. I don't launch with it, but it has been holding up great. These ratings are far more than conservative.
Maybe Exedy's ratings are, but it's hard to say whether they all measure torque capacity in the same way, and all use the same 'conservative' fudge factors to come up with their published figures.

It's pretty safe to bet that they don't, though. I really doubt that published torque figures from multiple manufacturers truly produces an "apples to apples" comparison. It's just the best we can do based on the available information.
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