Just picked up my C6 Z51. Clutch has a funny catch at the top. Is there a service bulletin out yet of the C6 clutch issue? How does the average person find service bulletins?

 

http://www.corvetteactioncenter.com/....php?catId=111

I can't say enough greathings about CAC in conjunction with this forum. It is a two-fisted combo that every Vette owner should frequent.

 

any idea when / if they are gonna release info related to the "clutch suck to the floor" issue ?

 

 

I THOUGHT I WAS THE ONLY ONE. This started to happen when I first got the car now the tran/rear/clutch function is blown? They have denied my claim due to "excessive tire and break wear indicitive of abuse". Where can I find more documentation on this?

 

Unless there is a mechanical problem, I think your problem is just that the C6 clutch throw is too long, and you are hunting for the point where the clutch engages. Clutch throw is the distance from where the clutch pedal is fully depressed to where the clutch friction plate engages as you bring the pedal up, i.e. the free play in the pedal.
You can probably live with this problem, most people do, and over time you will get accustomed to the clutch action. The C6 clutch spring also seems to have a variable resistance within the clutch throw distance that makes it a bit tricky to learn. There have been a number of postings on this forum about the C6 clutch feel.
But, I did not like my C6 clutch action and there is a simple fix. I am fussy about how the clutch feels and engages, and I like to adjust it to where it feels right for me. Hydraulic clutches are not adjustable in the fashion of the old time mechanical variety. But there is a simple 10 minute fix that you might try.
Look at the clutch pedal arm. Notice that there is a small metal wing that extends out to the right, about 1/3 way down. If you push the clutch pedal in fully with your hand, you will notice that the small metal wing engages a switch device that is on the firewall. This is the clutch/starter interlock switch.
I took a small piece of 1/4" plywood that I attached to the backside of the metal wing with industrial strength velcro. The plywood now engages the interlock switch.
You can make a cardboard template of the wing, and use that to cut the plywood to the proper shape. This reduces the clutch throw by 1/4" plus the thickness of the velcro. It also seems to reduce some of that variable resistence in the clutch spring.
A 1/4" reduction in throw does not sound like much but it does make a noticeable difference in the feel of the clutch and the engagement point. You can experiment with plywood of various thickness, 1/4" seems OK for me, but it depends upon personal preference. Because you are using velcro you can make endless experiments to get the right clutch feel. Conversely, if this does not work for you, the modification is easy to undo.
There is a limit as to how far you can go, because if you use a piece of plywood that is too thick, you will discover that there is little or no clutch throw, i.e. the clutch engages almost immediately. You don't want to go to that extreme.

 

damn! thats pretty cool how u did that.

 

One last afterthought about the C6 clutch. One problem that keeps cropping up is the "clutch pedal sticking to the floor". I wonder if the fix I just suggested to reduce clutch throw might also help to avoid the "sticking to the floor" problem.
It seems to me that if you have a long clutch throw, the throwout bearing is moving further on the clutch shaft and is pulling the diaphragm spring further than it might have to go. Because of that longer distance there may be too much force applied to the clutch diaphragm spring and throwout bearing. This may result in a hangup where the clutch remains disengaged and the pedal sticks to the floor. Someone on this forum called this an "overcentering" problem.
It is just a theory, but I wonder if reducing the clutch throw in the manner I suggested, might also cure the clutch pedal sticking problem. One of you guys with a "sticking" problem might try this fix and see if it has any effect.

 

Did you see my similar mod? Pictures are on my forum photo site:

http://forums.corvetteforum.com/phot...00/ppuser/6747

Clutch begins to engage about as soon as possible, yet still disengages completely. It's much more predictable, smoother, I can usually leave my heel planted on the floormat, when clutching.

 

Hoonose
You may recall that we discussed this topic a few weeks ago on this forum, just before I got my C6. After I got the car, it was clear that the clutch throw was too long for my taste.
Your modification is slightly different but achieves the same result. I tried to find a metal bracket similar to the one you used but I could not find one that fit properly. I took the quick and easy way out and came up with my simple wooden board and velcro gimmick. I am happy to hear that you are happy with the change you made. It sure did make a difference in my car, in fact, my wife noticed the improvement in clutch action immediately. Anyone who is uncomfortable with the C6 clutch should give it a try. It works!

 

I remember.
I wish I could recall where I got my brackets, or just what they were made to do!
I got a few of them if anyone wants one.

 

Does anyone know where I can find documentation on the clutch sticking problem? It must be credible by legal standards.

 

This is a happening on the C6? It use to be a C5 problem.

 

Sorry for the off topic:

Hoonose...if possible, could you e-mail me at DoctorV8@gmail.com regarding a car in Lake Havasu?

 

For C5's there is no TSB--but there is engineering Bulletin on the subject.MANY C5's clutches have been replaced using this bulletin