1990 Toyota supra chatter noise
 

Hello I've got a 1990 Toyota supra turbo it's got the manual r154 transmission. I just changed out all the seals in engine transmission. I changed the clutch pilot bearing and resurfaced the flywheel I put arp flywheel bolts and it's a exedy clutch. Theirs a chatter noise when I drive the car. What can this be and why

you will have to be more specific, when does it chatter how? when you where done installing the excedy clutch did you follow there break in period instructons, if not that my be why it chatters

Hell, what kind of clutch is it? Higher end clutches are known for creating a lot of chatter and poor street driveability.... such as a 4 puck, unsprung with upgraded pressure plate.