Ej2-B16a wrote:Whats the reason for it?
The easiest way to explain it is this. When your clutch is fully disengauged you are still going to have rotation from the engine to the transmission. Even though in a perfect world you clutch would not be touching your flywheel at all. We dont live in a perfect world. Allthough you trans is in neutral you will still have "power" delivery to the shaft. Your input shaft sits into the pilot bearing, the bearing is a press fit (technically supposed to be, can be put in with a socket and hammer) so the rotational mass of the engine lets say around 700 to 850 rpm is going to travel through the pilot bearing into the input shaft and turning the shaft in the trans. Like said before, more than likely you would be able to place your hand on the wheel and stop it from moving with a very small amount of force. As for the wheels speeding up as you rev the engine. Think of it the same way, the faster your pilot bearing is spinning, the more rotational energy will be transfered to the trans.
Perfectly normal on all manual transmissions, whether they were auto or not.
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