i know google is the best at answering these questions but i'm trying to understand overlap.


i understand that overlap is where the cam has both the exhaust valve and intake valve partially open at the same time... so this is for all four cylinders which allows air to flow through from the intake while the exhaust valve is still open? soo this allows more air to flow (exhaust + some of the newly introduced intake air) thus spinning the compressor that much more?