LS7 Clutch... Near impossible to get in gear
#1
Thread Starter
TECH Enthusiast
iTrader: (1)
Joined: Sep 2008
Posts: 584
Likes: 0
From: Fairfax, Virginia
LS7 Clutch... Near impossible to get in gear
The motor was already out of the car getting replaced and I decided to have the clutch replaced with a new LS7 clutch and a GM Slave... Well, not only is the clutch engaging about an inch off the floor, but it's damn near IMPOSSIBLE to get the shifter into reverse. It's very VERY difficult to get the shifter into all of the gears, but it's down right impossible to get it into reverse. The installer suggested I pump the clutch about 10 times and try engaging then, but it's still impossible. I can pump the clutch about 20-30 times and I can barely get it into reverse at that point, but it will go.. eventually. The other gears are very "crude" when trying to shift into them. This is while the car is at idle and the clutch is just depressed all the way. What in the WORLD is happening here? Does the hydrualic system need to be bled again?
#4
Trending Topics
#9
i hope this is a lesson to anyone that is planning a clutch job and is not installing a remote bleeder. i bled my clutch 4 times in the past few weeks since my install to make sure i get every bubble out and its no biggy with the remote. getting all the air out makes a huge difference, especially after driving and rebleeding. i have no more notchiness going into third after the last bleed.
fyi I use a mityvac too.
fyi I use a mityvac too.
#12
Thread Starter
TECH Enthusiast
iTrader: (1)
Joined: Sep 2008
Posts: 584
Likes: 0
From: Fairfax, Virginia
If those were backwards, wouldn't I NEVER be able to shift to reverse? Another interesting thing is when the car is running, the symptoms exist. When it's off, the shifting moves into and out of gears perfectly...
#13
If they are backwards then the trans will still go into a few of the gears, but it won't even come close to going into the gears that are blocked out. A customer of mine (mail order T56 build) did this a few months ago.
#14
The motor was already out of the car getting replaced and I decided to have the clutch replaced with a new LS7 clutch and a GM Slave... Well, not only is the clutch engaging about an inch off the floor, but it's damn near IMPOSSIBLE to get the shifter into reverse. It's very VERY difficult to get the shifter into all of the gears, but it's down right impossible to get it into reverse. The installer suggested I pump the clutch about 10 times and try engaging then, but it's still impossible. I can pump the clutch about 20-30 times and I can barely get it into reverse at that point, but it will go.. eventually. The other gears are very "crude" when trying to shift into them. This is while the car is at idle and the clutch is just depressed all the way. What in the WORLD is happening here? Does the hydrualic system need to be bled again?
Good luck with it and hopefully it is just air in the system.
#15
I still think the best tool for getting air out of the system is the cars clutch pedal, and a second person to activate it (including holding it down when necessary, and pulling it up with their hand if necessary) while you run the bleeder...be it the stock one sticking through the bellhousing, or a remote one if you installed it when you put the new slave cylinder in.
#16
Thread Starter
TECH Enthusiast
iTrader: (1)
Joined: Sep 2008
Posts: 584
Likes: 0
From: Fairfax, Virginia
I will be the first to admit that I know NOTHING about how the internals and hydraulic system of a trans works, but can someone explain to me how ait in the hydraulic lines would affect the shifter's ability to move into a gear? I'm going to check the clutch master cyl. tonight. Unfortunately, I did not have a remote bleeder installed (I had no idea this would be such a massive issue), so if I have to I guess I'm crawling up under the car and using the stock bleeder PITA
#17
Air in the hydros compresses causing your pedal to drop without pushing the clutch in. Without the clutch disengaged, everything inside your trans is spinning. Syncros weren't built to be clutches, only buffers to speed up or slow down the next gear you are going into.
#19
I will be the first to admit that I know NOTHING about how the internals and hydraulic system of a trans works, but can someone explain to me how ait in the hydraulic lines would affect the shifter's ability to move into a gear? I'm going to check the clutch master cyl. tonight. Unfortunately, I did not have a remote bleeder installed (I had no idea this would be such a massive issue), so if I have to I guess I'm crawling up under the car and using the stock bleeder PITA
#20
im betting the farm on the hydraulics.