xtrmstntmn

i just got a car which has what looks to be a sweet engine in it but im not sure what it is if anyone could help that would be great, on the engine where the engine and tranny meet the number on it is ZC 3005401 and its a DOHC engine

lazlong

According to Wikipedia:

ZC (similar to D16Y4, D16A8, D16Z6, D16A1, D16A3, D16A6, D16A9 and D16Z5 engines)

A few D-series variants are labelled (Japanese: Honda ZC engine) (usually JDM), but they are not truly a different series.

There are both SOHC and DOHC ZC engines.

The non-VTEC SOHC ZC is similar to the D16A6 ('91 - '96) and D16Y4 ('96-2000) engine, but with more aggressive cam timing.

The SOHC VTEC ZC is similar to the D16Z6 ('91 - '96).

The DOHC ZC is similar to the D16A1, D16A3, D16A8, D16A9 and D16Z5 engines.

DOHC ZC

Found in 1986-1991 (JDM) Civic and CR-X
Specs:
Displacement : 1590 cm³
Bore and Stroke : 75 mm X 90 mm
1986-1987 Compression : 9.3:1 1988-1989 Compression : 9.5: 1
1986-1987 Power : 113 hp (84.3 kW, 115 ps) @ 6250 rpm; Torque : 99 ft·lbf (13.7 kg/m, 134 Nm) @ 5500rpm (US)
1988-1989 Power : 118 hp (88.0 kW, 120 ps) @ 6500 rpm; Torque : 103 ft·lbf (14.0 kg/m, 137 Nm) @ 5500rpm (US)
1988-1991 Power : 130 hp (96.9 kW, 132 ps) @ 6800 rpm; Torque : 106 ft·lbf (14.7 kg/m, 144 Nm) @ 5700 (JDM)
Valvetrain : DOHC
Piston Code 1986-'87 : PG6
Piston Code 1988-'89 : PM7
Fuel Control : OBD-0 MPFI

Euro Mk1 ('85-'87) 1.6 CRX's are fitted with an engine designated "ZC1" which is a higher spec 130 hp (96.9 kW, 132 ps) version of the D16A1. Which were later to be switched out with the D16A8 or B16A depending on which model.

1st Gen ZC Identified by: External coil, small distributor, 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/CR-X 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 distributor, single butterfly TB mounted on slight angle forward, bolts on top of cam cover, black cam cover, large cam pulleys. +7cc PM7 pistons, 43 cc Pent roof combustion chamber. As a ZC appeared in JDM facelift AV bodied Integra Si did not appear in Civic or CR-X, 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 distributor, single butterfly TB. Black cam cover. Cam cover bolts on the sides. Small cam pulleys. Inlet Manifold stamped PM7. +7cc PM7 pistons, 43 cc Pent roof combustion chamber. As a ZC appeared in JDM EF3 civic and EF7 CR-X, 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 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) (sometimes +7cc P29 pistons)

More info on the DOHC ZC go to http://www.d-series.org/forums/showthread.php?t=91053

BlueEM2

iTrader: (1)

Just a regular D series? hmm

xtrmstntmn

not sure thats why im askin all i know is that number that i said above and that its a dohc

BlueEM2

iTrader: (1)

^ I think he answered your question right there. It sounds like a rebadged D16XX engine ment for a different market.

xtrmstntmn

does anyone know what the difference is between the large cams and small cams like how big of a difference in tooth count is there??

lazlong

There shouldn't be a difference in the number of teeth, there will be a difference in the height of the lobe:




Are you talking about the teeth on the pulley?

sdaidoji

iTrader: (1)

small/large cam teeth?!?
go to the dentist...

BlueEM2

iTrader: (1)

For every 2 small "teeth" on a cam there is one big one... and it only engages when VTEC does. I'm not totally sure what your asking here so I answered to the best of my ability. So I think it's 8 small lobes and 4 big ones on a single cam.

lazlong

Ah, teeth = lobes.

BlueEM2

iTrader: (1)

I would imagine ... I forgot to mention my above information only applies for a VTEC cam

sdaidoji

iTrader: (1)

have seem a guy complaining why his crower cam did not make any difference in his stock LX... not sure where...

BlueEM2

iTrader: (1)

Oyyyy

xtrmstntmn

i meant cam pulleys. whats the difference between large cam pulleys and small cam pulleys??

sdaidoji

iTrader: (1)

....
....
....

you will have an engine out of timing...

xtrmstntmn

well if you look at the second post on here there are four generations of this zc engine and thats one of the differences between them. im just trying to figure out what i have

sdaidoji

iTrader: (1)

duh! third time is the charm....more searching and engine basics books reading warranted... these books are commonly available in any barnes&nobles or any other bookstores without shaming yourself online...

xtrmstntmn

whats that supposed to mean i dont know everything and im not a mechanic so how am i supposed to know the difference between the two

xtrmstntmn

well why do you keep posting if your not gonna help me at all

sdaidoji

iTrader: (1)

again...

sdaidoji

iTrader: (1)

the help you need is about basics of engines, which could be obtained easily without asking here... Duh! again...