Vibration before transmission...help!!!

[TrueBlue95GT]

I've got a vibration at 3k thats in all gears and neutral that only happen's sometimes. When the car is still cold the vibration isn't as bad and then when it warms up, it's pretty bad and almost unbareable on the highway. I did put in solid motor mounts but I think those just made the problem noticeable. What could this be?

 

[94-302-vert]

What condition is the harmonic balancer in?

Chris

 

[davins130]

sounds like someone has a bad balancer

 

[TrueBlue95GT]

I replaced the balancer with a SFI spec one. I'm thinking it might be the flywheel. Does anybody know how its supposed to go up. I changed the flywheel when I changed the clutch and I may not have put it up right.

 

[94-302-vert]

This started with a clutch change?

Chris

 

[slytherin]

Maybe the wrong flywheel or incorrect install of the dampner. This is a strange one?

 

[TrueBlue95GT]

I'm not sure when it started happening because I just noticed it when I changed the motor mounts to solid ones. I'm wondering if the weight on the flywheel balances the flywheel or does it help to balance the whole rotating mass of the crankshaft and dampner? If so, how do you know how to clock it.

 

[94-302-vert]

From what I understand the bolt holes on the flywheel & crankshaft are keyed so it can only go on one way.

That 50oz imbalance is to balance the whole crank assembly not just the flywheel.

Chris