actually, it sounds like an input shaft bearing going bad....i had it on my integra i used to have

 

its almost exactly the same sound actually

 

Throw-out bearing going bad

Jason

 

^
thats what i thought it was on my integra, but it turned out to be input shaft bearing...so def check the throwout first but if it's still good my money's input shaft bearing......does the sound go away altogether if you depress the clutch? cause a throwout should be making noise at idle if it's going bad with the clutch not depressed

 

yep.if im standing still in neutral it has no sound.

 

well both the throwout and input shaft bearings would be making noise in neutral unless clutch was depressed

 

im just hoping its not from the tranny. I dont want to have to pull it off! its such a PITA!!!

 

Well, i guess it was the diff since tonight it blew up on me. I was driving and it went from grrgrrgrrgrrgrr to booom grrrrrrrrrrrrrrrrrrrrrrrrrrrrrrr. When i looked underneath there, there was diff fluid everywhere!!!

 

Sorry to here
It would explain why you did not here the noise when you were off the gas. The gear is on it's cost side when your foot is out of the accelerator that is why you heard nothing.
I would not have guessed the rear because, you said the sound was coming from the transmission area of the car.

 

that blows ass...excuse for a new gear ratio though if you dont have one already