reborngarcia1985 Posted October 11, 2012 Share Posted October 11, 2012 Hey I have seen that there are options for all the people doing the 6speed swap. But I would like to hear from other spec b owners that have had to replace the clutch in there car and with they went with. Link to comment Share on other sites More sharing options...
Rusty9 Posted October 11, 2012 Share Posted October 11, 2012 There are about 62 threads about this. From my research, I'm going with the stock STi Flywheel and the fx300 clutch. I had an exedy stage 1 HD(reused stock FW) installed a few months ago, and I don't like it. Heavy pedal, shudders in 1st and noisy on decel. Link to comment Share on other sites More sharing options...
reborngarcia1985 Posted October 11, 2012 Author Share Posted October 11, 2012 And i am looking for a review with spec b owners. not people tht have done the trans swap. looking for ones that have used the stock flywheel and done a clutch kit on it. Or if i have other options about doing something else on it that will still work on my car. Link to comment Share on other sites More sharing options...
Rusty9 Posted October 11, 2012 Share Posted October 11, 2012 From what I understand any STi FW and clutch combo works as the transmissions are essentially the same besides gearing and the center diff. I've been doing the same, trying to find reviews for ACT and Clutchmasters and even OEM STi. But as usual, forum posts swing wildly. "This one is great, quiet, smooth, holds a million torques!" and then the next post some guy says "its noisy on decel and chatters in first"..... But seeing as a vast majority of people here and on nasioc are using the fx300...I don't know. The only downside to kevlar is overheating it and ruining it, which is somewhat true for any I suppose but far worse for kevlar. Might just get an OEM STi clutch kit if it is suitable for a daily driver with a vf52. Link to comment Share on other sites More sharing options...
spec.B Dream Posted October 11, 2012 Share Posted October 11, 2012 I swapped my OEM clutch and flywheel for a new OEM STi flywheel and STi ACT HDSS clutch. ACT makes a spec.B specific clutch. I've read that the STi and spec.B flywheels are within milimeters of each other. I didn't notice any difference between the two, but didn't measure. There is a member on this site running the OEM spec.B flywheel with an STi clutch (not sure which make). I didn't do that because I didn't want to wait for my flywheel to be resurfaced. Link to comment Share on other sites More sharing options...
Max Capacity Posted October 11, 2012 Share Posted October 11, 2012 I'm sure when my 09 Spec B needs a clutch I'll get a Spec 2 clutch, like I have in my 05 wagon. For some reason I have great luck with Spec clutches. Edit, I'd go with a Spec 2+ my Spec 2 last 45,000 miles at 21psi, the wagon now a Spec 2+ clutch. 305,600miles 5/2012 ej257 short block, 8/2011 installed VF52 turbo, @20.8psi, 280whp, 300ftlbs. (SOLD). CHECK your oil, these cars use it. Engine Build - Click Here Link to comment Share on other sites More sharing options...
dr_sharp Posted October 11, 2012 Share Posted October 11, 2012 I didn't measure flywheel surface diameter when I did the swap either, but I have heard/read that they are different sizes. My oem clutch gave out at 280ftlbs at the wheels But I'm running sti clutch, flywheel, pressure plate with 360ft-lbs at the wheels with no issues. The pressure plate makes things noticeably stiffer but nothing outrageous... its feels just like an sti clutch now (surprise, surprise lol) lol Link to comment Share on other sites More sharing options...
NSFW Posted October 11, 2012 Share Posted October 11, 2012 Is there really any difference between the spec B flywheel and STI flywheel? I thought they were the same but I have to admit that I haven't given it much thought. Link to comment Share on other sites More sharing options...
reborngarcia1985 Posted October 19, 2012 Author Share Posted October 19, 2012 Ya what he said.^ and at this time I don't think I will be going any higher the 350 ft tq and time soon. It is my dd so I should just stay with a stage 1 or should I go and get a sti clutch kit??? Link to comment Share on other sites More sharing options...
Dbl_D718 Posted October 20, 2012 Share Posted October 20, 2012 I didn't measure flywheel surface diameter when I did the swap either, but I have heard/read that they are different sizes. My oem clutch gave out at 280ftlbs at the wheels But I'm running sti clutch, flywheel, pressure plate with 360ft-lbs at the wheels with no issues. The pressure plate makes things noticeably stiffer but nothing outrageous... its feels just like an sti clutch now (surprise, surprise lol) I remember in my thread from a couple months ago you told me a little about your move to the STI clutch. I've got another question for ya... How does it grab in "launch-like" situations. My only gripe with the stock spec.B clutch is that mine seems to have no initial bite. If I try to take off aggressively, it doesn't want to grab at all, just slips like crazy with the the pedal completely released. But once I let off and it grabs, it doesn't slip at all at WOT in any gear. /threadjack MODS: PW TMIC, Cobb catted DP, HKS cat-back, AVO filter, Bren e-tune; Konis/Epics, Advan RCII Link to comment Share on other sites More sharing options...
dr_sharp Posted October 22, 2012 Share Posted October 22, 2012 I remember in my thread from a couple months ago you told me a little about your move to the STI clutch. I've got another question for ya... How does it grab in "launch-like" situations. My only gripe with the stock spec.B clutch is that mine seems to have no initial bite. If I try to take off aggressively, it doesn't want to grab at all, just slips like crazy with the the pedal completely released. But once I let off and it grabs, it doesn't slip at all at WOT in any gear. /threadjack To be honest I haven't tried to launch like that since I put the clutch in. That scenario is always going to be dependent on how much power/torque you have, though. With 350+ wtq, I'd expect the same reaction from the sti clutch. If you're down in the sub 300 wtq range, you'd probably get some pretty good bite. But if you plan to launch like that on a regular basis, I'd suggest going to a beefier clutch made for that kind of driving. tl;dr - i don't really have enough experience with sti clutch to answer that question lol Link to comment Share on other sites More sharing options...
GTTuner Posted October 22, 2012 Share Posted October 22, 2012 I didn't have the greatest luck with my Spec, however I really beat it up pretty bad. I went with an ACT HD-SS and I like it. However, if you can spend 1200.00 bucks on a clutch (minus the flywheel!) the FX300 is amazing. I installed one yesterday and I was blown away at the light pedal effort and smoothness of engagement. Link to comment Share on other sites More sharing options...
RALLYT-WRX Posted October 22, 2012 Share Posted October 22, 2012 I am having a ACT HD-SS installed in my 08 Spec B on the 29th of this month. The plan is to resurface the stock flywheel and reuse it. I can post up a little review once I get it installed and broken in. Link to comment Share on other sites More sharing options...
reborngarcia1985 Posted October 23, 2012 Author Share Posted October 23, 2012 I am having a ACT HD-SS installed in my 08 Spec B on the 29th of this month. The plan is to resurface the stock flywheel and reuse it. I can post up a little review once I get it installed and broken in. does your car not have a dual mass fly wheel ? If it does I am looking forward to your review Link to comment Share on other sites More sharing options...
RALLYT-WRX Posted October 23, 2012 Share Posted October 23, 2012 does your car not have a dual mass fly wheel ? If it does I am looking forward to your review No, it doesn't have a dual mass. At least according to the research I have done as well as IAG and Subaru it doesn't. But there is a lot of confusion on this subject. Subaru lists a lot of different part numbers for the SpecB flywheel and from what we could see my 08 has a regular single mass flywheel and its the same one that is used on the STi. Of course that could all change when we tear it down on Monday. I will keep you updated on what I find out. Link to comment Share on other sites More sharing options...
RALLYT-WRX Posted November 14, 2012 Share Posted November 14, 2012 Well, the ACT clutch was installed yesterday and I am happy to have my car back running and putting all it's power down to the ground instead of my slipping clutch. My car did not in fact have a dual mass flywheel, but I had to upgrade to an STi flywheel in order to use the STi sized clutch. The STi clutch would not work with the stock Spec B flywheel, it was too small. But for the $100 extra they charged me for the STi flywheel I was not too upset about it. So far I love the way the new clutch feels. I still have a little shudder but that will pass after it gets broken in. I will let you know how it feels after break in, but so far I really like it. Link to comment Share on other sites More sharing options...
Stewy612 Posted January 7, 2015 Share Posted January 7, 2015 i just installed the act HD as well and holy balls the thing shudders. only have about 100 miles on the break in but i hope it passes soon! Link to comment Share on other sites More sharing options...
Jimblaz Posted January 7, 2015 Share Posted January 7, 2015 break in on a new clutch always shudders a bit. it will smooth out. my competition clutch did Link to comment Share on other sites More sharing options...
alex21 Posted March 30, 2015 Share Posted March 30, 2015 I know this thread hasn't been used in a while... If anyone is still watching, I'm wondering what the opinion is on implementing a stage 2 clutch to replace the OEM on a 2007 spec.b. I'm looking on exedy for clutches. Link to comment Share on other sites More sharing options...
Max Capacity Posted March 31, 2015 Share Posted March 31, 2015 I just updated my post above. I recommend a Spec 2+. I had underdog get it for me. Great price. When I replace the OEM clutch in my Spec B this spring it will get a Spec 2+ from underdog. I have over 2000 miles on the Spec 2+ and it still has lighter pedal feel then the stock clutch in my Spec B. But grabs real nice. Easy on your left leg. The 2+ like the Spec 2 before has never shuddered. I spent time talking with Jeremy at Spec Clutch about the old Spec 2. Great customer service. 305,600miles 5/2012 ej257 short block, 8/2011 installed VF52 turbo, @20.8psi, 280whp, 300ftlbs. (SOLD). CHECK your oil, these cars use it. Engine Build - Click Here Link to comment Share on other sites More sharing options...
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