eto para medyo malinaw kaya lang mahaba pag binasa, check this link http://www.allgonoshow.com/news/04/k...tec-breakdown/
The K20A3 does not have a standard DOHC VTEC valvetrain as we know it from the B-series engines - the K20A3 should actually be called a “DOHC i-VTEC-E” engine, because it uses a VTEC-E cam setup. The K20A2 is the “real” DOHC i-VTEC engine, utilizing the standard DOHC VTEC cam setup we’re all familiar with.






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