What the difference between small vtec and big vtec?

Answer 1

If im not mistaken , this can seen on the engine cover of the car... Big VTEC is normally written bigger than DOHC on the cover meanwhile small VTEC is written smaller which is smaller than DOHC writings on the cover. Big VTEC is normally b16b engine and second generation b16a engine. In addition, other engine such as h22a which can be found in Honda accord 1995 and also prelude is big VTEC. Small VTEC is first generation of b16a engine and others. The VTEC engages at the certain rpm and varies for different model of engines. For example b16a big VTEC's swithover is at 5600 rpm where the valves engages. Small VTEC is underpowered compared to big VTEC and is almost can't be felt when VTEC engages. Big VTEC is very powerful, the VTEC engagement has a turbo like feel and it has 160hp or more, depends on the car. As mentioned above, the b16a engine delivers 160hp and 150Nm of torque at around 7000rpm.