Slight Grinding noise

[vr4joe]

What going on guys?

I finally just bought a GSX tonight. I'm really excited to get back into the car scene. I recently sold my 95 3000GT VR4 last summer and really missed the AWD turbo scene.

I just picked up a 98 GSX and it is in great shape besides the clear coat. When i test drove the car i didn't hear anything wrong with the car. But on the way home ( 2 hour drive back home ) i got on it a couple of time and now i'm hearing a slight grinding noise. It only happens with i accelerate in 2nd, 3rd, 4th or 5th. As soon as i take the my foot of the gas, the noise stops. When i'm in 1st i also do not hear the grinding noise. Anytime when the car is 'under stress' is seems to make this slight grinding noise.

Could this be the throwout bearing making this noise? i feel like this is a transmission thing.

Let me know what you guys think.

Thanks,
Joe

 

[Jreg]

If the noise is getting worse in the higher gears, you have a bad bearing/gear mesh in the output side of the tranny. You said you disconnected the prop shaft and tested it and still heard the noise? Because I would point towards differential carrier bearings then. Remember the clutch side of the trans in the input shaft. It will only ever spin as fast as the engine will. It's after the different speeds (1st, 2nd, 3rd...) that things will spin faster than the engine. Even the shafts that contain the different speeds and synchros spin only as fast as the engine. So definitely sounds like something with the differential if it is 100 percent in the trans. Good luck.