[Z06] Difficult shifting.
Thread Starter
Instructor
Joined: Mar 2005
Posts: 231
Likes: 1
Difficult shifting.
My Z has 3000 miles on it. I've noticed that the shifting effort is great, especially when downshifting from 4th to 3rd. Downshifting in general isn't easy. Sometimes even going into first from a stop can be require some effort. The trans rattles quite a bit sometimes, and sometimes it's barely noticable. The rattle goes away when you depress the clutch, as it would when the internals of the tranny stop spinning. That takes the release bearing out of the picture.. In general, the clutch seems to be disengaging fine and not binding. This whole thing seems to get worse when the trans fluid heats up.
I started a thread about different tranny fluids, and I've decided to try Royal Purple Syncromax. Has anyone tried this fluid with any luck?
Are these cars just hard to shift, or is it my particualar car?
Thanx, Rick.
I started a thread about different tranny fluids, and I've decided to try Royal Purple Syncromax. Has anyone tried this fluid with any luck?
Are these cars just hard to shift, or is it my particualar car?
Thanx, Rick.
Pro
Joined: Jun 2004
Posts: 551
Likes: 0
From: Mars
The stock shifter has to be bullied around the box but I'd say it was not entirely working with you rather than a problem. If your shifter is merely stiff and requires quite strenuous movements to row it about, I'd say that was normal. If it's more a mechanical problem, then you need to get it checked. Try another Corvette for comparison.
I thought the stock shifter so obstructive, I fitted a BPP shifter and it's like driving a different car. Still quite stiff and notchy but shift and you're there.
There is a rattle problem when turning the car off which is cured by putting the car in reverse before shutting off.
I thought the stock shifter so obstructive, I fitted a BPP shifter and it's like driving a different car. Still quite stiff and notchy but shift and you're there.
There is a rattle problem when turning the car off which is cured by putting the car in reverse before shutting off.
Thread Starter
Instructor
Joined: Mar 2005
Posts: 231
Likes: 1
Originally Posted by LuS1fer
The stock shifter has to be bullied around the box but I'd say it was not entirely working with you rather than a problem. If your shifter is merely stiff and requires quite strenuous movements to row it about, I'd say that was normal. If it's more a mechanical problem, then you need to get it checked. Try another Corvette for comparison.
I thought the stock shifter so obstructive, I fitted a BPP shifter and it's like driving a different car. Still quite stiff and notchy but shift and you're there.
There is a rattle problem when turning the car off which is cured by putting the car in reverse before shutting off.
I thought the stock shifter so obstructive, I fitted a BPP shifter and it's like driving a different car. Still quite stiff and notchy but shift and you're there.
There is a rattle problem when turning the car off which is cured by putting the car in reverse before shutting off.
I have the most trouble downshifting from 4th to 3rd. No grinding, just very stiff.
Racer
Joined: Nov 2002
Posts: 397
Likes: 0
From: Auburn AL
All C5 Corvettes with the M6 or M12 manual transmission have a rattle when in neutral. Some however are more noticable than others. The rattle is the throwout bearing, or at least that's what the Corvette tech at my dealership explained to me, and it's completely normal. When you depress the clutch the bearing stops turning which is why the noise goes away. I have driven several different C5s with six speeds and the noise was apparent in all.
To answer your question about the shift difficulty I am not sure but I also have difficulty with the shift to first from neutral and sometimes reverse is hard to. I do know that if you have a problem with one of the two gears you should try the other. Like if you are having a problem with first try to put it in reverse. It seems to align the syncros and makes it much easier to put in gear. I hope this helps.
Greg
To answer your question about the shift difficulty I am not sure but I also have difficulty with the shift to first from neutral and sometimes reverse is hard to. I do know that if you have a problem with one of the two gears you should try the other. Like if you are having a problem with first try to put it in reverse. It seems to align the syncros and makes it much easier to put in gear. I hope this helps.
Greg
Thread Starter
Instructor
Joined: Mar 2005
Posts: 231
Likes: 1
Originally Posted by electronbluec5
All C5 Corvettes with the M6 or M12 manual transmission have a rattle when in neutral. Some however are more noticable than others. The rattle is the throwout bearing, or at least that's what the Corvette tech at my dealership explained to me, and it's completely normal. When you depress the clutch the bearing stops turning which is why the noise goes away. I have driven several different C5s with six speeds and the noise was apparent in all.
To answer your question about the shift difficulty I am not sure but I also have difficulty with the shift to first from neutral and sometimes reverse is hard to. I do know that if you have a problem with one of the two gears you should try the other. Like if you are having a problem with first try to put it in reverse. It seems to align the syncros and makes it much easier to put in gear. I hope this helps.
Greg
To answer your question about the shift difficulty I am not sure but I also have difficulty with the shift to first from neutral and sometimes reverse is hard to. I do know that if you have a problem with one of the two gears you should try the other. Like if you are having a problem with first try to put it in reverse. It seems to align the syncros and makes it much easier to put in gear. I hope this helps.
Greg
BTW, when you press the clutch pedal, it is then that the release bearing starts to spin. When your foot is off the clutch, the bearing does nothing. Even the techs at the stealership are clueless it seems
.What happens when you press the clutch in is that the release bearing presses against the pressure plate diaphram and disengages the clutch. At that point, the internals of the transmission stop turning and the rattle from the gear cluster goes away. The noise is not the release bearing at all. If it were, the noise would occur when you were pressing the pedal. This has always been a big misconseption, and I am always expalining this to my customers that come it with clutch issues.
My point is that the rattle is a little too loud for a 50K car, but I guess I'll have to deal with it. I'm hoping that changing the oil to something more exotic will help with the shifting aspect of this transmission.
Last edited by Innovator; Apr 26, 2005 at 07:37 AM.
Instructor
Joined: Sep 2004
Posts: 120
Likes: 0
From: Auburn NE
Originally Posted by electronbluec5
All C5 Corvettes with the M6 or M12 manual transmission have a rattle when in neutral. Some however are more noticable than others. The rattle is the throwout bearing, or at least that's what the Corvette tech at my dealership explained to me, and it's completely normal. When you depress the clutch the bearing stops turning which is why the noise goes away. I have driven several different C5s with six speeds and the noise was apparent in all.
To answer your question about the shift difficulty I am not sure but I also have difficulty with the shift to first from neutral and sometimes reverse is hard to. I do know that if you have a problem with one of the two gears you should try the other. Like if you are having a problem with first try to put it in reverse. It seems to align the syncros and makes it much easier to put in gear. I hope this helps.
Greg
To answer your question about the shift difficulty I am not sure but I also have difficulty with the shift to first from neutral and sometimes reverse is hard to. I do know that if you have a problem with one of the two gears you should try the other. Like if you are having a problem with first try to put it in reverse. It seems to align the syncros and makes it much easier to put in gear. I hope this helps.
Greg
Happy Gear Jamming
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