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Heavy Duty Clutch for 300+ HP Boxster

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Ever since my 3.4 conversion last year, I find my clutches are like bad recordable CDs in a cheap burner. On the way to Summit Point this morning, I found my car slipping in third gear at fairly low RPMs. I called SPR to let them know I wasn't going to make it to the instructor meeting, or the rest of the day for that matter. Now, I'm frustrated...

Which clutch manufacturer should I be looking at? I have ACT on my Mazda, but they don't have an application for my Boxsera. Two clutches in a year is a bit much. I had one replacement when I first got the car, as some of you will remember from the dramatic day at James Woods High School during Porschfest a few years ago. That replacement got burned up fairly quickly with the 3.4 pumping 300+ HP though it. The replacement for that one is now also nearly gone.

I need a really good clutch to handle the power I'm putting through, and no the OEM for the 996 won't fit the Boxster tranny.


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Unlike most, I think the stock clutch is also kinda whimpy. I am looking at these: http://www.specclutch.com/ either 2+ or 3+.

I am not the most technically astute in this, but I also have a 3.4L Boxster. I recently created an aweful smell from my clutch and had my local mechanic install a Sport Clutch. Are you running this clutch or something else? I have high pedal effort, but it does hook up nicely now.

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I've talked to the guys at SPEC. Unfortunately, they have clutches for only the 2.5 tranny and the 3.2 tranny. They don't yet have one for the 2.7. The clutch I had before was the Sachs sport clutch. I've had at least two of them in there. It's just too much power for it.

After about 15 minutes of tech talk with the import guy at SPEC who seems to know the Porsche quite well, he recommended I get the 2+ because of the amount of torque going through there. The 1 is fine for a sport clutch replacement, but the additional power (300+ HP) makes it hard for even the 2. The 2+ is the perfect fit according to him.

The bad part is it will be at least two weeks before they can get a clutch back to me, and the price is not certain. It may help to have a large group of us 3.4l Boxsera owners make a group buy. I haven't asked, but I could call them Monday.


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