Bad Clutch Vibrations After Install
Bad Clutch Vibrations After Install I had an assload of problems with a clutch install, but now that it is finally working there is a really bad vibration in the clutch pedal. Some people are saying it just needs to break in, but it seems to be pretty severe.
What would cause the clutch pedal to vibrate? The vibrations also can be felt in the shifter, as well as a slight ticking sound coming from the clutch area.
Would a unaligned disk cause this?
The flywheel was resurfaced during the clutch install.
What would cause the clutch pedal to vibrate? The vibrations also can be felt in the shifter, as well as a slight ticking sound coming from the clutch area.
Would a unaligned disk cause this?
The flywheel was resurfaced during the clutch install.
Which clutch and pressure plate? I had a lot of clutch chatter when I installed an lt4 clutch years ago. Drove it for about 1k miles and it didn't go away. Ended up changing it out it annoyed me so much. What did you use to raise the trans to get it in? If the trans hung unsupported without being fully installed you could bend the clutch spline which would cause chatter.
If you were able to install the trans without much difficulty then the clutch disc had to have been in alignment. You would never get the input shaft to go in if it wasn't. Once you install the trans depress the pedal and release the pressure plate that allows the clutch to align itself.
If you were able to install the trans without much difficulty then the clutch disc had to have been in alignment. You would never get the input shaft to go in if it wasn't. Once you install the trans depress the pedal and release the pressure plate that allows the clutch to align itself.
Which clutch and pressure plate? I had a lot of clutch chatter when I installed an lt4 clutch years ago. Drove it for about 1k miles and it didn't go away. Ended up changing it out it annoyed me so much. What did you use to raise the trans to get it in? If the trans hung unsupported without being fully installed you could bend the clutch spline which would cause chatter.
If you were able to install the trans without much difficulty then the clutch disc had to have been in alignment. You would never get the input shaft to go in if it wasn't. Once you install the trans depress the pedal and release the pressure plate that allows the clutch to align itself.
If you were able to install the trans without much difficulty then the clutch disc had to have been in alignment. You would never get the input shaft to go in if it wasn't. Once you install the trans depress the pedal and release the pressure plate that allows the clutch to align itself.
I used a telescoping transmission jack and did all of the work on a lift, so I'm pretty sure the input shaft is fine.
Did you make sure that the PP is sitting firmly against the flywheel all the way around?
I made the mistake of not knowing at the time it had to sit right up against the flywheel because the torque wrench would say its good before it was fully seated and there was space between the PP and flywheel, which caused major vibration and had to be fixed immediately. Throw out bearing was toast from just a little bit of driving with the vibration.
Could very possibly be your problem..
I made the mistake of not knowing at the time it had to sit right up against the flywheel because the torque wrench would say its good before it was fully seated and there was space between the PP and flywheel, which caused major vibration and had to be fixed immediately. Throw out bearing was toast from just a little bit of driving with the vibration.
Could very possibly be your problem..
So before I drop the transmission again, I decided to try adjusting the Tick Master Cylinder a bit. When I lower the adjustment height, the vibrations go away but the clutch won't fully disengage. When I raise it to the height it needs to disengage (which is almost as high as the pedal would go) the vibrations start.
I'm not sure if that means anything though.
I'm not sure if that means anything though.
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Did you happen to install a poly trans mount as well? Just asking because that will increase the vibrations to the shifter. Did you install a new TO bearing? You always should during a new clutch install.
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Verdad Gallardo I changed from a pilot bearing to a pilot bushing though - not sure if that would cause an issue.
Was the TB installed correctly? The metal clip can snap in incorrectly.
Did it feel nice and smooth when you test turned it?
I had a lot of problems with TB and found out mine was recalled(the kit I purchased). Company ended up giving me an entire new clutch kit because of it.
Did it feel nice and smooth when you test turned it?
I had a lot of problems with TB and found out mine was recalled(the kit I purchased). Company ended up giving me an entire new clutch kit because of it.
TECH Regular
Joined: Oct 2008
Posts: 492
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From: Rochester, NY
If a throwout bearing is on its way out, it's entirely possible to feel it in the pedal through the hydraulics, but I'm not completely sold on this hypothesis.
My guts telling me the vibrations are coming from something being bent or warped. Maybe the hub of your friction disk accidently got a little bent up from taking the tranny in and out so many times? Not really sure though.
Counted_Out, your car is a freaking mystery.
My guts telling me the vibrations are coming from something being bent or warped. Maybe the hub of your friction disk accidently got a little bent up from taking the tranny in and out so many times? Not really sure though.
Counted_Out, your car is a freaking mystery.
If a throwout bearing is on its way out, it's entirely possible to feel it in the pedal through the hydraulics, but I'm not completely sold on this hypothesis.
My guts telling me the vibrations are coming from something being bent or warped. Maybe the hub of your friction disk accidently got a little bent up from taking the tranny in and out so many times? Not really sure though.
Counted_Out, your car is a freaking mystery.
My guts telling me the vibrations are coming from something being bent or warped. Maybe the hub of your friction disk accidently got a little bent up from taking the tranny in and out so many times? Not really sure though.
Counted_Out, your car is a freaking mystery.
So everything looks good so far, but I noticed that the pressure plate seems to be closer to the flywheel in some spots.
In this one, you can see the bolt/pressure plate sits flat against the flywheel
In this one, you can see that there is a gap.
I checked the torque and they both seem to be at 22lbs. Is it supposed to be like this?
In this one, you can see the bolt/pressure plate sits flat against the flywheel
In this one, you can see that there is a gap.
I checked the torque and they both seem to be at 22lbs. Is it supposed to be like this?
^^^No, there should be no gap like that between pp mounting point and flywheel. I bet the threads on the flywheel in that hole are messed up, causing a messed up torque reading. If you checked it and it's at the correct torque, I would pull it all back apart and run a tap through that bolt hole. That is very likely the cause of your problem.
PP should mate flush with the flywheel. Holy **** you are drowning in LT1 clutch Hell. Hang in there. Make sure the PP bolts are not bottoming out in the FW. Chase the threads if needed.