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LS-9X clutch, difficulty shifting while not moving

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Old 01-17-2012, 06:46 PM
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Default LS-9X clutch, difficulty shifting while not moving

So i bought an installed a ls9X clutch with a brand new CTS-V slave. after completing that, there was difficulty shifting when the car was not moving (as if the clutch disc were still spinning a little with the transmission. Shifting while moving was a little notchy but okay. I then went ahead bought a brand new master cylinder and replaced that also. Still have the same issue, what do i look into now?

BTW, it has been bled countless times. I am certain it is not air in the line.
Old 01-17-2012, 07:01 PM
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You used a new CTS-V slave? I thought you had to use a Corvette slave for the LS9, same as when you use an LS7 setup.
Old 01-17-2012, 07:41 PM
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that clutch kit is made for the CTSV slave. I did the same install. LS9x twin disc & pressure plate, Tick remote bleeder, CTSV slave. how tight do you have that nut on the bottom of the shifter?? too tight or too loose seems to make it real notchy.

I know you say you have bled, but I notice you can never bleed enough. Once you get ALL the air you will be done. Until ALL the air is bled, it will not be smooth. I bled mine like 3 or 4 times over a few weeks period. good luck.

Last edited by VeryWhiteDevil; 01-17-2012 at 07:47 PM.
Old 01-17-2012, 07:47 PM
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Also depends on the mileage on the trans. It could be worn synchros. Mine does it in first at about half of my stops.
Old 01-17-2012, 07:56 PM
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Originally Posted by BudRacing
Also depends on the mileage on the trans. It could be worn synchros. Mine does it in first at about half of my stops.
I didn't have this issue at all before the clutch swap. There is no air in the line, i am sure of this.
Old 01-18-2012, 09:30 AM
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Also, when the car is turned off, it shifts between gears wonderfully
Old 01-23-2012, 09:36 PM
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Tried a new CS trans mount to see if that would help.... nope. Well i'm slowly putting more miles on it to see if the condition changes over time.
Old 01-23-2012, 10:15 PM
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Keep bleeding it
Old 01-23-2012, 10:24 PM
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keep bleeding it...or you got a bad part/or config.
Old 01-23-2012, 10:36 PM
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Isn't the fact that it shifts great with the engine off a sign that its not a bleeding/air in the line issue?
Old 01-24-2012, 05:48 AM
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Originally Posted by Onefast V
Isn't the fact that it shifts great with the engine off a sign that its not a bleeding/air in the line issue?
No, it shifting fine while the engine is off means nothing. The engine and is spinning, so of course its going to shift fine.

Keep bleeding it. Also, how are u bleeding it??
Old 01-24-2012, 07:18 AM
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I'm on the bleed it band wagon. If you have too, use a vacuum bleeder.
Old 01-24-2012, 08:48 AM
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Looks like ill go back to bleeding this thing.



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