I finally installd my spec stage 4 along with a steel flywheel this weekend. All I can say is DAMN!!! This clutch grabs like crazy!! I think I'm going to send it back and get the stage 3. I knew it was going to be a grippy clutch but I wasn't expecting this. I primarily drive the car on the street and occasionally on the track so I think a spec stage 3 will do just fine. Granted I only have bout 50 miles on it but I called spec today and they said it isn't going to change much. What does everyone else who has this clutch think??

 

what part of "race car only" in the clutch description was confusing??

send it back....

 

Ok guys tell me if this makes any sense. Today after work I decided to go take the car for a drive and see how the clutch felt. It felt just fine today!! I was able to take off from a stop without giving myself wiplash. Yesterday when I would take off from a stop the clutch would grab as soon as I got it 1/4" off the ground and would not slip even a little. Today it grabs about halfway up and it slightly slips with some chatter. The only explanation I can think of is that it needed a few heat cycles to wear itself in. I did a bunch of running around yesteday and was parking it for up to a half hour at a time. What do you guys think????

 

Yes clutches also need to heat cycle in. A bunch of normal stop sign to work and back driving to help seat them in. My stage 3 feels the same as a stage 4 car I drove. I read a few places where the sprung hub on the 3 made the car lurch harder taking off because the spring bottom out on the hub. My 2 star stage 3 had completely worn out springs. I will go with the stage 4 this time. I was just wanting to drive one with a stage 5 since I come off the line at 6000 or more. They dont last long at that RPM.

 

Well it is definetly tough getting used to this clutch! I have about 75 miles on it now. It chatters like crazy when I take off from a stop or downshift when moving. I also noticed that I have a pretty bad vibration at all speeds. I have a feeling that I need to have my new flywheel balanced to the old one. Does anyone have any experience with driveline vibrations after a spec flywheel/clutch install??

 

So how does it compare to the Stage 3 clutch now? I just ordered a Stage 4 today and hopefully Ill be able to live with it..

Cody

 

I had a stage 3 kevlar before the stage 4 and its a completely different clutch. The stage 3 never gave me any problems until last year when it started acting up. Before that it felt like stock, which is the complete opposite of the stage 4. Oh well, I just gotta get used to it.

 

Well I have about 175 miles on it now and I take back everything I said about this clutch. In my opinion this is the only clutch to get. I am glad I didn't put in a stage 3 and have to worry about springs breaking. The chatter has already gone way down and the vibration I think I had is gone now. To anyone thinking about this clutch I say get it!!! Trust me the first 100 miles with it are rough, but after that its good to go!!!!!!

 

sweet man
that's what clutch i plan on getting probably next spring now
this stock one just doesn't grab

 

I suggest it to anyone with modifications that needs a new clutch.

 

I'll put in another vote for the stage 4, I've got about 600 miles on mine. It hasn't had any chatter at all-except in reverse, maybe I just got lucky. But personally I found it easy to get used to.

 

dude, u need to break the thing in first i have a new stage 3 and i love it it is holding up great after a half year of abuse, i have heard that the stage 4 is very simular to the stage 3.

 

What kind of flywheels is everyone using? Stock? Billet Steel? Billet Al? I am in need of a clutch myself but keep hearing about reliabilty issues of Spec clutches. Is that a thing of the past now? I currently have a single disk kevlar McLeod and love it but would like a little more holding power

 

Gary,
What do you recommend for me? Clutch/Flywheel wise??

Steve and I think that the "SS" will be good with a Spec Stage 3I with a Spec Steel Billet Flywheel with a Stock Throw out Bearing.

I am going to order one sometime this week and would like to know what you think!!!

My clutch is starting to smell alittle but still feels and grabs fine. But, after I go to Norwalk on the 23rd the Stock Z06 clutch will probably be toast!!!

Happy to hear that your car is finally up and running good. Hope to see ya soon!!!! Later

 

If I were you I would get the stage 4. Mine is great except for one problem. I finally got the 500 break in miles on it a couple weeks ago and I got on it for the first time and as soon as the rpms got above 3500 the car started vibrating pretty bad. I have the billet steel flywheel too. I suspect either the flywheel or pressure plate is out of balance. I'm taking the car apart on wed. and then take everything to commercial engine to have them check the balance on it. After that I'm calling Spec again. Its a bunch of bull sh*t that I wasn't planning on dealing with. Oh well, thats what happens with aftermarket stuff.