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You can do this if your engine RPM, the speed of the vehicle, and the gear you are shifting to/from is just right. The reason you can do this is because you have synchros in the transmission which allows the two gears to match rotational speeds as they come in contact (basically, there is more to it than this, but hopefully you get the drift). The synchros ...


Well, if you engine braking is done in a way to causes your car to over-rev, you can look forward to picking up a rod on your passenger seat. All the engine is doing under regular engine braking is suffering from a vacuuming effect as the pistons are moving downwards while the throttle is closed. So vacuum wants to pull the pistons up and the momentum of ...

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