Bad vibration during clutch engagement

[mac 108]

I recently installed the following parts in my otherwise stock 92 Galant VR-4:

ACT 2600 kit, street disc
Fidanza flyhweel
OEM TOB
OEM Shift fork
OEM pivot ball bolt with lockwasher shim

Installed according to the instructions on the VFAQ and Haynes manual. All parts were torqued to spec. Proper thread sealants and grease were used. I have about 70 miles on the setup.

My problem is that when accelerating from a stop in either 1st or Reverse, the car shudders and vibrates badly. If I get the RPM to slip ratio just perfect, it doesn't vibrate very much. Trying to move the car forward by gently slipping the clutch and giving no gas results in bad vibration. There is little to no vibration when shifting to higher gears during normal driving.

Any idea what the problem is? I'm starting to get the sinking feeling that I am going to have to re-do the entire job.

 

[dsmdream]

It sounds like it's just chatter. Should go away after the break-in. Try giving it a little more gas that helped with my chatter.

 

[99 gst spyder]

I have that too with my act 2600, i'm thinking it's just the heavier pressure plate that grabs sooner then stock. I just have to give it more gas/rev in order for it not to vibrate.

 

[spadepro22]

I have the same problem with the 2600. The hole car shakes and I have to push the clutch back n sometimes to get it to stop once it starts if I don't get it just right. Its been installed for about 30k

 

[mac 108]

Okay, that's a relief. Thanks for the replies.

 

[Funfettie]

With a street disk, I think this should go way after break in period, but I also have chatter with a 2600 with a 6 puck sprung.