i'm not quite sure what ZC actually stands for, but i did find this it is the ZC JDM equivalent of D16A1 130ps. and ratings: D16A1 1.6 L DOHC 86-89 Integra, 86/87 113hp, 88/89 118hp. this is the web site that i found it on.
http://www.superhonda.com/tech/honda_engine_codes.html
hope this helps. i keep noticing that ZC is the JDM version only not the USDM versions. looks like you have a true jap only engine.