Troubleshooting a noisy drivetrain
First, determine if the problem is clutch or tranny related.
a) clutch; With the engine running, the car not moving, the shifter in any gear, push in the clutch. Now nothing is moving inside the trans. If you still hear the
noise, then it has to be coming from the clutch area. Check your pilot bearing, throwout bearing, and clutch assy.
b) transmission; If the above procedure doesn’t uncover the problem area, try this. Put the trans in neutral, let the clutch out. If you hear the noise, then it’s most
likely in the trans. Start with the input bearing, then move rearward looking for problems (inside the trans of course).