Originally Posted by darkpreludevtir
Er.... seems like there is widespread confusion about how VTEC actually works..... shame.
For a start, the engine does have 2 *camshafts*, as it is like many jap engines, a DOHC. One of these *camshafts*is the intake cam responsible for the two intake valves per cylinder, and one is the exhaust cam responsible only for the two exhaust valves per cylinder.
im glad you can copy a bunch of stuff you read somewhere and paste it here
fact is that i built my h22a, yea, from a bare block in my goddamn garage.
so before you continue to state the obvious and quote other peoples stuff (like honda and the helms manual
), allow me to remind you of what an attitude will get you.
jack shit
btw, most engines do not have alot of overlap (or excess duration).
VTEC motors have some of the highest, either way, flames at the muffler are not caused by more air (as you previously stated), its caused by unburned fuel.
turbo cars have minimal to zero overlap.
thats why boosting a DOHC VTEC is futile without dialing out overlap on the cam gears.