I went with the HKS GD Max twin disc with flywheel and I love it the twin disc grabs and allows me to slip the clutch when drag racing off the line it also has very little pedel pressure so it is very easy to drive every day if you choose to do so...

 

Your all forgetting the Unorthodox Racing Ceramic setup, stock pedal feel, stock driveability , with no clutch chatter. And oh its good for around 500 whp.

 

I would imagine a solid hub would wreak havoc on other drivetrain parts with the regular shock it puts on the system also.

 

How much $?

 

$1099 installed

 

Unfortunately we are unable for the time being offering the installed option.

 

Sometimes it does cause more wear on driveline parts, not from shock, but from vibration. It depends on vehicle type. The springs aren't strong enough to prevent shock, such as when you dump the clutch launching. They bottom out way too soon for that. The spring's primary job is to dampen torsional vibrations to keep them from transmitting noise in the transmission. On certain vehicles this vibration will wear gears, etc. on the transmission. On other vehicles, it has no affect, other than noise.

Z1 wasn't accurate in his message about the solid vs. spring and the springs giving smoother engagement. Much the opposite. Actually the spring center ceramic will chatter worse than a solid one, if both use an equally aggressive friction material. Chatter occurs when using an aggressive friction material. As the engine winds up in the mounts when the clutch is being engaged, the clutch disengages briefly causing the engine to **** back. This may happen a few times a second. This is typical of aggressive materials and the reason stock clutches do not use aggressive friction materials. What the springs do in this case is allow for more wind up and therefore increase chatter. If you get rid of the windup (solid engine mounts, solid disc) you will not have chatter even with a real aggressive material. The problem is that you get vibration, noise, etc. which is undesirable in a street car.

 

Very interesting. Thanks.

 

LOL. I can't believe they took the word out. I didn't mean to be offensive. Just to clarify things a bit: I am describing a bouncing back, or recoil (not the male anatomy).

 

ACT will you be able to explain why does my stock Clutch, Stock car chatter every morning before its COMPLETLY warmed up?? Even some times when its warm it will chatter but not much?? I don’t think that the stock clutch is using aggrieve material. My clutch is not slipping at all.

 

I thought you were talking about a rooster.

 

ACTman ... can the Street Clutch kit for the E8 work for the Evo 7?
- i presume so as the splines are the same etc..

thanks

 

If the engine mounts are good, and the engine mounting bolts are tight, etc, then it leads me to believe it's a faulty clutch, but without inspecting the parts, it's hard to say. Aggressive materials are by no means the only cause for chatter. Broken/worn engine mounts, oil contamination on the clutch, a pressure plate bolt missing or loose, improperly ground flywheel, no disc marcel (some aftermarket clutches), release bearing not installed correctly, or worn suspension parts can also contribute to chatter.

I am sure I missed at least a couple other causes. In your case, I am sure the car is pretty new, which makes me real suspicious of the release bearing, since I have heard of occassional problems. What does the dealer say?

 

Yes, and actually we have a couple EVO 7 pressure plates to play with as well. I just don't know how much interest there is for it since we don't have them here in the US

 

The dealers are num heads like always.
they will tare the car apart and then shake their heads???The car has 13000 miles. never draged raced or anything. Plus if it is engine mounts or suspension are loose it would happend more often or always. Once the car is warm it drives like a champ. I will take it to the dealer but i dont want them to take my clutch apart and ask for money.