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Funny this thread should be at the top today, as I came here to ask a related question:
Has anyone here experienced a failure of the input shaft bearing?
I'm by no means an expert on transmission issues, or parts in general, but over the past month or two I started noticing a distinct whine while accelerating in gear, that appeared to be tied to engine RPMs. At first I thought maybe I was imagining things, or that - this being a light-weight sports car with minimal sound deadening - I was just hearing standard transmission whine and it was normal for this car.
However, this weekend I noticed it even more than normal. The noise is a very distinct whine. It goes away when I PUSH IN the clutch, and comes back when I release it, and I can definitely hear the whine "spin up" when I release the clutch. It as if I can hear exactly what the input shaft is doing. I hear it in neutral, and I hear it in every gear. The whine is even loud enough that I can hear the input shaft drastically slow down when I move the shifter from 1st to 2nd while driving, for example.
I looked up input shaft noise videos on YouTube, but they all have HORRIBLE mechanical sounds as if the transmission has grenaded. Mine is just a very smooth whine that is present, but not particularly loud. Only loud enough to be heard. It also comes and goes, though it is mostly always audible, but it isn't particularly alarming. I bet almost nobody who wasn't a car person would even have noticed the sound yet.
Is this a common issue? I've seen some posts on other forums for other vehicles where entire transmissions were replaced when this part went bad. Is it a complex job to repair? I can't seem to find ANYONE with this issue on the FT86 forums. Only throw-out bearing issues.
I'm running AMSOIL in the transmission, by the way, and have been for about 6 months now.
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