Originally posted by Speedra600
actually i believe the h22 is 1.58, not positive though...and also I dont believe its possible to have an H23 that is better than an H22, just think of the advantages of having 2 different sets of cams? i mean its ideal....they dont really make a whole of cams in the form of turbo cams for the h22, but if you really know what you're doing a made a custom turbo cam for the h22, it would be unreal
H23 = 1.49:1 rod/stroke ratio
H22 = 1.59:1
sorry about that... just found my notes.
also, the AEM civic features a roller rocker conversion, which eliminates the VTEC function. this is due to less valvetrain friction and the fact that VTEC is useless in the realm of drag racing.
VTEC is great for fuel economy, when a loping idle and low rpm efficiency is important... but fuel economy is not of a concern on the race track.