Originally Posted by dosmastr
(...)
You are confusing VTEC and VTEC-E.
VTEC-E hydrolically deactivates valves at low RPM to save gas (similar in general concept to the old school "12" valve CVCC heads,) and locks in all 16 for normal power at high RPM. This system is best illustrated in the 92-95 Civic VX's D15Z1 engine. Newer Honda motorcycles use a similar system.
VTEC uses a normal set of cam lobes at low RPM (all on all 16 valves) while it hydrolically engages an extra set of rocker arms, which ride on aggressive lobes, to give greater high RPM power. The only difference between SOHC VTEC and DOHC VTEC is obviously the the extra cam and rocker set. Examples include the 92-95 Civic Si's D16Z6 and the 92-93 Integra GS-R's B17A1.
That said, I've never seen a '94 run at the track... only a 4G that ran a night's best of 17.1. :chuckles: