i am currently using a competition clutch twin disk but the thing is soooooo annoying. It chatters horrible. people are always asking me if i have an exhaust bolt loose or something... Has anyone else noticed this with competition clutch? Is there any other companies that people have had success with? Car is still street driven.

 

They all do that. The only one that is a little quieter is the tilton carbon/carbon and that one is $4300.

You could just keep your foot of the clutch so you dont hear the chatter.

 

I have the comp twin also. Havent noticed any chattering. Probably would really notice beings its not a very quiet car and has solid mounts.

 

thats normal for most twin disc...nothing to worry about

 

yea most clutches with more than one disk, like twin or tripple, will chatter a lot. i wouldnt worry.

 

i run exedy twin disk...It chatters also. like jonnyt1130 says its normal for all twin disc.

 

sorry for the thread jack, I will be buying a twin soon and the CC was recomended to me, but I remember hearing from some people having issues tearing the spline out of the CC Twins, anyone else have this issue?

 

3 years with no issues i think you'll be fine.

 

can anybody help clear the air about pedal stops and if they are needed bc ive heard different things

 

Tilton carbon to carbon twin disc. No complaints at all. 2600lb Street car.

 

i have the same one and it also chatters thats normal.

 

Just to clarify... The noise you are hearing is not "chatter". "Chatter" is the shake you feel on an aggressive clutch during engagement. You may be trying to say "clatter". This is often reffered to a noise coming from loose tolerences in a transmission when the stock dual mass flywheel is replaced with an aluminum single mass flywheel. Our cars don't come with dual mass. These are more common with audi/volkswagen cars(and more of course).
The noise you are talking about is floater noise. The floaters have to "float" when the clutch is released in a multi disc clutch. They are metal friction surfaces and the noise you hear is metal hitting metal. It simply has to do this to work. Like Miller said, a carbon unit should not make this noise since the floaters are not metal. Some brands make more noise than others. It all has to do with how loose the tolerences are.

 

There are a couple of reasons to use a pedal stop. The main reason is that it only takes about 1/4" to disengage the clutch on most 7.25" multi discs. If you push it farther than that, you are pushing it to far and over extending the diaphram. When you do this, you are increasing the pedal effort. This puts more stress on all of the hydraulics, the bearing, the thrust washers(especially if you are starting the car with the clutch pushed in(it has no oil pressure when you are starting it)), and you can actually extend it so far that the clutch will re-engage. It will release better if it is not over extended as well. You can accomplish this by lowering the pedal until it does not over extend, but then your foot has to travel farther, which can screw up your shift timing(timing between the shifter and the clutch pedal). The best thing to do is install a stop where it will disengage towards the top(but not so high that it won't fully engage when released). This way, your foot will release the clutch as soon as possible and won't have to move the extra distance to the floor that does not need to be used anyway.

 

Excellent info.

 

Good info about to upgrade to CC twin after sk2 cams and retune....