4th Gen ZC Identified by: Internal coil. OBD1 EFi system (grey plug). No cam angle sensor on exhaust cam, now located in distributor. Rubber plug where cam angle sensor would mount. Black cam cover. No PGM-EFi plate on the inlet manifold, replaced with three ribs instead. P29 stamped on inlet manifold. MAP sensor on TB. +7cc PM7 pistons, pent roof combustion chamber. As a ZC only appeared in EG5 Civic bodies, no Integra or CRX received this engine.
Reasonably common produced from '92 to '94. (20th Anniversary edition & Japanese car of the year) D-series version D16A8/9 (Euro & Australia Civic Si & NZ Civic Gti) (sometimes +7cc P29 pistons)
http://www.d-series.org/forums/dohc-zc/91053-dohc-zc-specs-mods-parts-list.html
Hope that helps some.
hmm. where to start lol.
theres no such thing as a d16zc. your either thinking about the sohc d16z6 or your just mistaken. the zc engines were all labeled "ZC". no numbers involved. they are only able to be told apart by various parts on the motor itself.
1st Gen ZC
Identified by:
External coil, small dizzy, dual butterfly TB, cam cover bolts on top, brown/gold cam cover. Large cam pulleys.
+3cc PG6B pistons, non-pent roof combustion chamber.
As a ZC it appeared in JDM AV integra Si and JDM E-AT civic/crx Si. Commonly produced at the time but now over 20 years old and getting harder to find.
D-series version D16a1 86-87
2nd Gen ZC (rarest)
Identified by:
Internal coil, large dizzy, single butterfly TB mounted on slight angle forward, bolts on top of cam cover, black cam cover, large cam pulleys.
+7cc PM7 pistons, 43cc Pent roof combustion chamber.
As a ZC appeared in JDM facelift AV bodied integra Si did not appear in civic or CRX, rarest ZC only produced for less than one year.
D-series version D16a1 88 - 89 (sometimes +7cc P29 pistons)
3rd Gen ZC
Identified by:
Internal coil, large dizzy, single butterfly TB. Black cam cover. Cam cover bolts on the sides. Small cam pulleys. Inlet Manifold stamped PM7.
+7cc PM7 pistons, 43cc Pent roof combustion chamber.
As a ZC appeared in JDM EF3 civic and EF7 crx, did not appear in an integra body. Most commonly produced ZC, manufactured in Japan from end of 87 through to early '91
D-series version D16a8/9 (euro civic Si) (sometimes +7cc P29 pistons)
4th Gen ZC
Identified by:
Internal coil. OBD1 efi system (grey plug). No cam angle sensor on exhaust cam, now located in Dizzy. Rubber plug where cam angle sensor would mount. Black cam cover. No PGM-EFi plate on the inlet manifold, replaced with three ribs instead. P29 stamped on inlet manifold. MAP sensor on TB.
+7cc PM7 pistons, pent roof combustion chamber.
As a ZC only appeared in EG5 civic bodies, no integra or CRX received this engine. Reasonably common produced from 92 to 94. (20th Anniversary edition & Japanese car of the year)
D-series version D16a8/9 (Euro & Australia civic Si & NZ civic Gti) (sometimes +7cc P29 pistons)
There is also a sohc zc engines and in both vtec and non-vtec.
The non-VTEC SOHC ZC is similar to the D16A6 ('91 - '96) and D16Y4 ('96-2000) engine, but with more aggressive cam timing.
The DOHC ZC is similar to the D16A1, D16A3, D16A8, D16A9 and D16Z5 engines
as for the 20th anniversary edition. the first civic was made in 72 there for the 92 would be the 20th year for the civic lol.
not raggin on you man just straightening facts