Quote:
Originally Posted by Army
I thought of that too but it is just as "bad" in my opinion to have any valve opening just before the piston reaches top dead centre - be it the exhaust valve or the intake / inlet...
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Correct me if I am mistaken, but it's probably likely that the intake valve starts to open just before TDC on the exhaust stroke. This "overlap", if you will, compensates for the fact that the air mass needs some time to accelerate and travel.
However, it certainly doesn't start opening at an estimated 35BTDC based upon his data.
after further reflection, there is no possibility of the exhaust valve being mistaken for the intake valve in this issue, simply because the exhaust valve starts to open slightly before bottom dead center and there would be no indication whatsoever on the damper.