vibration in 4th gear ......only?

[cobraetti]

i seem to be getting a vibration only in 4th so i think car sits alot didnt know if the tires are getting flat spots

 

[ScottyWhipple]

What clutch you running? What Rpm is the Vibration

 

[blood]

I get the same thing, I have a spec stage 2. Its probably around 2k rpms or less.

 

[keith89]

what clutch, cable, quadrant, adjuster setup? Was work recently done? Vibration during light/heavy load, no load or deceleration?

I know i had a pilot bearing go out causing a severe vibration while decelerating mainly in 3rd gear. That was a fun one to diagnose.

 

[SlowSVT]

Yea the source of vibration can be very hard to diagnose. Harmonics and resonance frequency can make it appear out of nowhere and can disapear just as quickly and may have nothing to do with 4th gear in the tranny. If the vibe is getting worse and worse that's not good. If it stays pretty consistent and only does it briefly under certain circumstances it's shouldn't be as worry-sum.