I have 3 stuck valves on the ZC motor I got from sunrise enterprises, the short block is good. While I'm having the Head fixed, is there anything I can do to it to increase performance(head wise) without building up the lower end or F-ing up factory computer settings and still maintaining a smooth idle. This motor is going to be used in a rally car, Which is why I chose the ZC over a B series(ground clearance).
Sean Burke 91 CRX

 

You could try porting the intake, although the ZC intake is pretty good to start. Since you'll have the head off, you could try getting all the plugs synced up

 

could you please explain this? im in the same situation with a SOHC ZC and would like to get a little more power from it.

 

theirs a full ZC engine at a local junkyard. how good are the heads? are they better then the d16z6 head? and will it bolt onto a d15b block?

 

Not without a lot of machine work that's not worth it