Are all z6 motors vtec? And how would you tell if it has a vtec head or not. If so... what would be a good rpm to set the v-tec controller at? Any info on vtec.. and how u tell what motor has it would be great. As well as, pros and cons of vtec vs non vtec. thanks

 

yes, they are all vtec

 

Well if it has the VTEC logo on the valve cover it is a VTEC Head. (because i dont think these valve covers fit other heads) theres 2 different models on the SOHC VTEC
D15Z1 1.5L SOHC 16-Valve VTEC E (92HP)
D16Z6 1.6L SOHC VTEC (125HP)
The Vtec activation depends on various factors such as
Engine RPM
Engine Speed (MPH)
Throttle Position
Engine Load
Coolant temp

So your VTEC wont activate at the same time all the time... it varies...
But im pretty sure that RPM wise its somewhere around 5100RPM
But if you chip it or controll it you can set it to lower or higher RPMs

 

Dont forget the D16y8 is also a Single Cam Vtec, from 96 and up civics.

EDM also has some Single cam vtecs, that are lower displacement, like D14's and other variants of the d15z's

Some 92 Z6's have black valve covers that do not even say vtec on them, beaware, look for the vtec solinoid.

Jeff

 

the D15B was a kick *** little sohc vtec. 130Hp came in civic VTI in japan. also had a 3 stage VTEC. the thing screamed!!!!

 

Mine is a 93 and it also has a black valve cover..

d16y8 also come in the late 90's Acura EL....

somethin the yanks dont got! :P