Question about my M6

[Eric1987]

Hi I recently registered here. I been lurking around here for about a week though. I have a 1999 Z28 convertible M6. When I actually give it some throttle and redline it through the gears I notice something odd. It seems that my clutch peddle lowers. After a minute or two I can take the toe end of my foot and pull it back up to normal. Is that what its suppose to be doing? And a new shift knob/boot recommendation would be great. I hate that ball and the cheap leather one it comes with.

[t-rock]

sounds like you need the drill mod.

[Justin93]

my 02 M6 Z28 does this too, however its only when I drop the clutch and shift in to second that it happens. why is this? I also get the smell of burning clutch as if its slipping really bad. Is this tied in with Trac control if so, I dont believe mine has it as it doesnt have a button to deactivate it.

[slpcamaro]

sounds like you need the drill mod.

few things going on here 1. When your racing your causing the fluid to get too hot 2. There an issue with our cars when racing sometimes the fluid doesn't get back to where it's suppose to be fast enough drill mod's said to solve this not sure if theres an aftermarket master cylinder that solves this anyone found one?

[Eric1987]

Well thats a big relief. I was thinking that the clutch was going out. I didnt notice slipping but I wasnt sure. And drill mod?

[camarojunky74]

what you need to do first is suck out all that black fluid in the resevoir, pump the shit out of your cluth like 50 times or more, take the cap off and suck more fluid out, keep repeating this till you damn their ran a full bottle of dot4 brake fluid thru it, after it seems your fluid stays clean after pumping and or driving, take it out and drive it hard, like you would if you were racing, if the problem goes away, great just change the fluid like i described every time you race the car hard all day at the track or about every other oil change,

if this doesnt fix your problem you may need to try bleeding the clutch. this is the easiest way, get your car up as high as possible in the front. leaving the back on the ground, get someone in the car pumping the clutch like earlier, have them then hold the clutch to the ground similar to brake bleeding, then on the driver side up high where the motor and trans meet youwill find a bleed valve, grab an 11 mm wrench or 1/4 ratchet and socket and crack it open and then close it, repeat pumping and bleeding for a while, like 1 or 2 hours, while letting it sit in between long periods of bleeding. making sure to keep fresh and new fluid in the resevoir at all times. if it feels after bleeding that the clutch gets firmer, try driving it, this should be the last thing to do. if its still being a bitch, go to ls1tech, search the drill mod under driveline and diffs under m6, a good step by step write up is there to help you in your process, or try installuniversity.com or ls1howto.com any of these should point you in the right direction.

side note, when you change your clutch if none of these help, an ls7 clutch is a good streetable dd clutch, and buy a new slave cylinder and new master cylinder from an 01 or newer camaro or trans am. try calling around to dealerships some are a lot cheaper than others. sometimes you can bargain with the parts guys with a 6 pack of cold ones and so on good luck. and btw im in corona about an hour from you, if you need any help pm me, im a mobile camaro so called guru, ill be happy to help you out

[Eric1987]

Wow thats a lot of info thank you camarojunky. The sad thing is I'm not a mechanic. If the problem persists I am sure I can get my dad which is a mechanic to do the drill mod. I'm trying to learn from him slowly. Why a new MS SS from an 01+? And LS7 clutch? And whats a hurst shifter too? Sorry I came from a Honda Prelude. All this domestic stuff is confusing.

[camarojunky74]

awesome well we are the way and the light lol.

and the reason you want one from an 01 or 02 is gm updated it to try and solve the problem you are having with your 99, and they did a good job, the drill mod is a cheap fix to replacing it with new,

basically the drill mod is taking the steel braided line that connects the ms to the slave cylinder off and drilling a small 1/8 hole in the plastic piece that restrics flow. it seems to work very well.

climb under your car, you will see this line i am talking about on the driver side near the floor board.

also an ls7 clutch is the clutch that gm designed for the 06 and present zo6 corvette, a very nice clutch that works very well.

a hurst shifter is simply the rod that connects your hand to the transmission, whenever you go and shift a gear you push or pull on that shifter, hurst is a popluar company who makes replacment shifters for your car that actually makes shifting an easier thing to do. kinda hard to explain when you as new as you are to cars. hope this clears stuff up.

[Eric1987]

Wow okay thanks that actually answers a lot of questions. Hurst shifter is like a short shifter? And now for some non tech questions. Whats a good shift knob and boot to replace that ugly stock ball that comes originally.

[camarojunky74]

exactly a short shifter.
try the ws6store.com i bought a shift knob from them and love it. as for the boot i dont really have an answer for you, try replacing it with new and maybe you will like it,

[Justin93]

awesome well we are the way and the light lol.

and the reason you want one from an 01 or 02 is gm updated it to try and solve the problem you are having with your 99, and they did a good job, the drill mod is a cheap fix to replacing it with new,

basically the drill mod is taking the steel braided line that connects the ms to the slave cylinder off and drilling a small 1/8 hole in the plastic piece that restrics flow. it seems to work very well.

climb under your car, you will see this line i am talking about on the driver side near the floor board.

also an ls7 clutch is the clutch that gm designed for the 06 and present zo6 corvette, a very nice clutch that works very well.

a hurst shifter is simply the rod that connects your hand to the transmission, whenever you go and shift a gear you push or pull on that shifter, hurst is a popluar company who makes replacment shifters for your car that actually makes shifting an easier thing to do. kinda hard to explain when you as new as you are to cars. hope this clears stuff up.

Ok if gm fixed this issue in 01-02 cars why the heck is mine still doing it? do you suppose It needs the clutch Fuild flushed at 65k miles?

[Eric1987]

Okay thanks. I appreciate all the help you have given me camarojunky. And whats the rated times on the 1/4 with a Z28 LS1? Some people say high 13's some say high 12's with just a LID.

[camarojunky74]

Ok if gm fixed this issue in 01-02 cars why the heck is mine still doing it? do you suppose It needs the clutch Fuild flushed at 65k miles?

at that mileage yes.
have you raced your car often? then absolutely

[camarojunky74]

Okay thanks. I appreciate all the help you have given me camarojunky. And whats the rated times on the 1/4 with a Z28 LS1? Some people say high 13's some say high 12's with just a LID.

here you go young buck
instead of the whole shifter this is what i bought well worth the 25 bucks
http://www.ws6project.com/user_stor/...c0ef8f65aa761c


and the knob and the boot
http://www.ws6project.com/user_stor/...c0ef8f65aa761c


and to answer your question it ranges from low 14's to high 12's i personally have driven my stock 02 to 12.89,
and have seen low 14's from the same year of car.
with a good driver, the car running right a high 12 isnt impossible just very hard to achieve.
here is my cell 714 412 2227, any more questions just give me a call my name is luke

[Eric1987]

lol wow you're just full of tons of info. Dont the 01+ have the LS6 block or something that adds a few horses?

[Justin93]

at that mileage yes.
have you raced your car often? then absolutely

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I just bought the car so I cant say if it has been. I was just a bit bummed with the slipage. I'll flush that when I get back from vacation thanks for your expertise.

[Eric1987]

I dont have any slippage when that happens. That I notice atleast. When that happens I dont race it anymore.

[camarojunky74]

lol wow you're just full of tons of info. Dont the 01+ have the LS6 block or something that adds a few horses?

the last 300 or so 02;s that came out with an ls1, had an ls6 block, rumor is gm ran out of the ls1 blocks and instead of stopping production they just used an ls6 at their assembly plant, and as far as hp, there has been no proven increase in power, although an ls6 has bigger oil passages and some say differently casted to support bigger #'s but that didnt come because it was still an ls1 because of the cylinder heads, and camshaft. hope this helps

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I just bought the car so I cant say if it has been. I was just a bit bummed with the slipage. I'll flush that when I get back from vacation thanks for your expertise.

no problem, and dont trip man your car is nearly 6 years old, and with any car that has good power the driveline is gonna get the first line of abuse, a clutch and master will run you up to 700 but its money well spent if you plan on driving your car.

[Eric1987]

A question too. Is the SS camaros really faster than the Z28? Or is it just another thing to get you to buy the SS?

[camarojunky74]

a fully slp optioned ss vs a z28 around the road course and on the strip im sure an ss would be a bit faster. not much thou