1st Gen
Identified by:
External coil, small dizzy, dual butterfly TB, cam cover bolts on top, brown/gold cam cover. Large cam pullys.
PG6B pistons, non-pent roof combustion chamber.
As a ZC appeared in AV integra Si and 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
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 pullies.
PM7 pistons, Pent roof combustion chamber.
As a ZC appeared in facelift AV bodied integra Si, rarest ZC only produced for less than one year.
D-series version D16a1 88 - 89
3rd Gen
Identified by:
Internal coil, large dizzy, single butterfly TB. Black cam cover. Cam cover bolts on the sides. Small cam pullies. Inlet Manifold stamped PM7.
PM7/P29 pistons, Pent roof combustion chamber.
As a ZC appeared in EF3 civic and EF7 crx, did not appear in an integra body. Most commonly produced ZC, manufactured from end of 87 through to early '91
D-series version D16a8/9 (euro civic Si)
4th Gen
Identified by:
Internal coil. OBD1 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.
PM7/P29 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 civic Si & NZ civic Gti)