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Discussion Starter · #1 ·
I'm in panic mode here folks and really need someone's help! :(

I had heard about all the improvements for the 02 clutch, and was hoping all would be well, but I think I really screwed something up bad.

I had my car out last night, stopped at a light, and decided for some reason that it was time to do a really good burnout off the line. All I had done previously was a gentle 2000 rpm drop - where the engine just bogs down and you get a little tire "chirp". This time I decided I was going for some wheelspin. So I revved it up to about 3000 rpm, dropped the clutch and at the same time floored it (tc/ah off). I was fully prepared for the car to leap forward, maybe even a little sideways. Instead, the engine revved to about 4200 rpm and stayed there. I held it for about 3 seconds - all the while at about 4200 rpm, thinking I must be getting some awesome wheelspin for the lack of forward motion...decided it was time to shift to 2nd to get the thing rolling a little faster (I was doing about 30mph at that point). Lifted and shifted to 2nd gear, then floored it again. Same thing, engine goes to about 4200 rpm.....well I know for sure this can't be right after about a second, so I let off. Then that aweful burning clutch lining smell hit me and my heart sank! I smelled it for about the next 2 miles of slow driving. Oh I am so bummed.

So what the heck did I do to the clutch, and what should I do about it? I can't imagine that this is normal....the clutch shouldn't have slipped like that should it? My friend suggested that perhaps since the car only has 1100miles on it that the clutch wasn't fully broken in, so the linings didn't have a full contact surface. I'm now wondering if I didn't glaze the linings badly and mess up the clutch, necessitating replacement.

I drove the car back home last night and it seems to be ok, but I'm worried about the long term effects and I certainly don't want that to happen again. I can't imagine that the dealer is going to be able to do anything about it if it's not a consistent problem.

Any comments? Anyone have a similar problem? What should I do about it?

Thanks,
Todd
 

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Ouch :eek:

c4c5 is in Carlisle so he won't be on soon.....hopefully someone can offer assistance.

Lamb, can you cut that sig to max 450x60 and 15k? It's blowing out my tables :)

Thanks and good luck

JC
 

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Discussion Starter · #3 ·
N4C5S said:
Ouch :eek:

c4c5 is in Carlisle so he won't be on soon.....hopefully someone can offer assistance.

Lamb, can you cut that sig to max 450x60 and 15k? It's blowing out my tables :)

Thanks and good luck

JC
Thanks JC.

Is that sig pic better? Smallest I could get it - the 60 is a little short.

Todd
 

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Lambinator said:
I'm in panic mode here folks and really need someone's help! :(

I had heard about all the improvements for the 02 clutch, and was hoping all would be well, but I think I really screwed something up bad.

I had my car out last night, stopped at a light, and decided for some reason that it was time to do a really good burnout off the line. All I had done previously was a gentle 2000 rpm drop - where the engine just bogs down and you get a little tire "chirp". This time I decided I was going for some wheelspin. So I revved it up to about 3000 rpm, dropped the clutch and at the same time floored it (tc/ah off). I was fully prepared for the car to leap forward, maybe even a little sideways. Instead, the engine revved to about 4200 rpm and stayed there. I held it for about 3 seconds - all the while at about 4200 rpm, thinking I must be getting some awesome wheelspin for the lack of forward motion...decided it was time to shift to 2nd to get the thing rolling a little faster (I was doing about 30mph at that point). Lifted and shifted to 2nd gear, then floored it again. Same thing, engine goes to about 4200 rpm.....well I know for sure this can't be right after about a second, so I let off. Then that aweful burning clutch lining smell hit me and my heart sank! I smelled it for about the next 2 miles of slow driving. Oh I am so bummed.

So what the heck did I do to the clutch, and what should I do about it? I can't imagine that this is normal....the clutch shouldn't have slipped like that should it? My friend suggested that perhaps since the car only has 1100miles on it that the clutch wasn't fully broken in, so the linings didn't have a full contact surface. I'm now wondering if I didn't glaze the linings badly and mess up the clutch, necessitating replacement.

I drove the car back home last night and it seems to be ok, but I'm worried about the long term effects and I certainly don't want that to happen again. I can't imagine that the dealer is going to be able to do anything about it if it's not a consistent problem.

Any comments? Anyone have a similar problem? What should I do about it?

Thanks,
Todd
<< Its possiable that you have the dreaded hydraulic release problem in your slave cyl. or a restriction in the line from the clutch cylinder to the slave cyl.Did the pedal stick to the floor or come up only about 1/2 way???
 

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Discussion Starter · #6 ·
Re: Re: Oh NO, what did I do to my clutch? HELP!

Z11409 said:
<< Its possiable that you have the dreaded hydraulic release problem in your slave cyl. or a restriction in the line from the clutch cylinder to the slave cyl.Did the pedal stick to the floor or come up only about 1/2 way???
Wow, never heard of that problem before...does it happen often?

I'm pretty sure the pedal came up all the way - it for sure wasn't on the floor and I don't think it was "lazy" since putting my foot back on the clutch for the shift to second seemed like normal positioning.
 

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With the help of C4C5 spec, and persistent hassling of the local GM shop, I had the entire clutch assembly replaced on my 01' Roadster due to the fact that the clutch was misaligned when installed. The plates were not flush and wore unevenly. This created a burning odor at around 3500 miles and as you explained, prevented the car from hooking up properly under hard acceleration. It was a near fist fight to get them to open it up, but eventually I took a master tech out for a ride and he actually replicated the problem. This was about the fourth or so time I had taken the car to the shop. Frustrating, but in the end they took care of the problem.

The slave cylinder issue is nonexistent as the system is self bleeding.
 

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What happened to you has happened many times to others that launch at too high of an rpm. The clutch won't fully engage under those circumstances. Once it cooled down it should be fine. Try it again with a cool clutch at 2600 or so, it should work fine. Did you shorten your clutch life? Sure, but probably not too much.
 

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Hi there,
Carl is correct here, as the clutch could take up to as much as 7000 miles to correctly seat to the flywheel and the pressure plate.
I really suggest to avoid burnouts until after that mileage is reached, then all should be well.
If you have issues after that time, let us know, c4c5
 

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02ZO6405 said:
With the help of C4C5 spec, and persistent hassling of the local GM shop, I had the entire clutch assembly replaced on my 01' Roadster due to the fact that the clutch was misaligned when installed. The plates were not flush and wore unevenly. This created a burning odor at around 3500 miles and as you explained, prevented the car from hooking up properly under hard acceleration. It was a near fist fight to get them to open it up, but eventually I took a master tech out for a ride and he actually replicated the problem. This was about the fourth or so time I had taken the car to the shop. Frustrating, but in the end they took care of the problem.

The slave cylinder issue is nonexistent as the system is self bleeding.
02ZO6405,
I had the same problem. The clutch would stick to the floor after redlining. I believe it was your post on the CF that I printed and brought to the dealer that helped convince them to open the car up. My entire clutch assembly was replaced also.
 

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Discussion Starter · #12 ·
Thanks for everyone's advice!:)

I've driven the car quite a bit and everything seems to be fine. However, if I have any more slippages I am going straight to the dealer.

The main things I have gathered from all this are:

1) the clutch takes quite a while to fully seat/break in.
2) once it's seated, it still won't lockup well at higher rpms with the power of the LS6.
3) a lot of people have done the same thing I did without any bad results.
 

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Lambinator said:

2) once it's seated, it still won't lockup well at higher rpms with the power of the LS6.
The new clutch in the 02 Z is supposed to be better than the 01 model (more clamping force). IMO, once the clutch is seated in, it should not slip at all -- the only things that should slip are the rear (stock) tires :D. Of course if you had some big ol' race slicks on it, that might be a different story.

Just keep an eye on it :D.
 

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When autocrossing, I have run into the slipping clutch problem if I have had to downshift for a tight turn but never have had the clutch stick to the floor. Also, Ive have had clutch/shifter problems when drag racing--especially 2-3 shift. There was and article in chevyhiperformance about throwout bearing restriction being part of the problem. Interesting article. It suggests the restriction in fluid to the bearing is the cause of numerous problems and the solution was opening the restriction.


If I get time in the next few weeks I will try it.

http://www.chevyhiperformance.com/index.jsp?articleid=39021
 
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