Strange vibration. any ideas what it could be?

[hvyman]

Windows up or down?

 

[rodama5anthony]

Windows up or down?

hmmmm i dont remember. Ill try it again tmrw with assistant (right now is to late to be reving the engine so loud) and ill let you now. really think it could just be the windows shaking?

 

[boostcraver]

its there while driving but the sounds of the road and the motor muffles it since its not very loud. vibrating is more heard then felt and only occurs between about 3800-4100rpm

You sure you don't mean RATTLE instead of vibrate? Just asking since you said more heard then felt. Vibrations ARE felt even if they aren't heard...

You said stock shell. Does that mean you are still using the stock 2 piece driveshaft? If you do still have it, others have suggested that you check the carrier bearing. It may also be possible that the rear section of the shaft has begun to separate within itself and in that case it could still be the driveshaft, but NOT the center bearing. Just throwin it out there, I may be off base. You should def check everything that everyone else has already suggested as well. If all that checks out ok, and the noise/vibration persists, see if there are any local repair shops that have a Chassis Ears device as those are very useful in pinpointing phantom noises. GL!

 

[hvyman]

If the doors are closed and widows up you will also hear things differently than with windows down or doors open.

 

[rodama5anthony]

You sure you don't mean RATTLE instead of vibrate? Just asking since you said more heard then felt. Vibrations ARE felt even if they aren't heard...

You said stock shell. Does that mean you are still using the stock 2 piece driveshaft? If you do still have it, others have suggested that you check the carrier bearing. It may also be possible that the rear section of the shaft has begun to separate within itself and in that case it could still be the driveshaft, but NOT the center bearing. Just throwin it out there, I may be off base. You should def check everything that everyone else has already suggested as well. If all that checks out ok, and the noise/vibration persists, see if there are any local repair shops that have a Chassis Ears device as those are very useful in pinpointing phantom noises. GL!

thanks for the input. if i cant narrow down the source ill defiantly take it to a shop.

---------- Post added at 08:34 PM ---------- Previous post was at 08:32 PM ----------

If the doors are closed and widows up you will also hear things differently than with windows down or doors open.

im pretty sure the doors and windows were closed but ill have someone help me tmrw to see if we can narrow down were its coming from

 

[IJ.]

stock shell and its only really noticable when reving stationary in neutral

Just sounds like a harmonic then, check all of the heat shields and make sure they're not loose/touching anything.

 

[rodama5anthony]

Just sounds like a harmonic then, check all of the heat shields and make sure they're not loose/touching anything.

thanks IJ that was my first thought but just wanted to get some opinions

---------- Post added at 02:51 PM ---------- Previous post was at 02:50 PM ----------

its my first supra and ive read enough on how notorious they can be so i tend to get alittle on edge whenever i hear a noise im not used to lol