2xtreme

ok honda guys i need some help. ive been building a 91 civic for the past 4 months and i put dohc zc engine in it with some bolt ons. now my questions are what exactly is this motor from cause ppl tell me this ppl tell me that and w/e i want 2 know. also i dont know what it could be but it shifts at 8000 rpm's which ppl tell me is unheard of and when i try to do a take off its like its slow pick up untill about 3000rpm then it launchs u in ur seat for the rest... why could this be. thx

and also what kind of work can i do to this motor...........is it a b series or a d series????

Emps

IIRC ZC is a D16A8 or 9.

If you shift to 8 grand on a ZC, it's not a ZC. THe redline should be 7200rpm on a stock motor.


I think the 8 is a european model with less compresion and the 9 is JDM with higher compression and less enviromental .

I dunno the too much about zc's really. I know they bolt into a CRX, and there are two kinds one that bolts into the Rex and the one from the integra that doesn't.

Oh found this
"ZC ~ Japanese model - comes in several varieties. Injected, carbed, sohc, dohc, brown valve cover, obd0 and obd1."

crazyae

iTrader: (2)

Alright, many poeple are confused about the zc engines. They are all jdm engines and can be compared to the i beleive the years are 86-89 integra engines. They come in both ob0 and obd1 in both sohc and dohc. The sohc comes in vtec and non vtec. These engines come from the civic/crx and i beleive since they have them in obd1 also the next gen civics. In terms of buying parts for this engine you are looking for d-series parts. What ecu are you running???

2xtreme

emps.....nono it is a zc it says right on the block.....but i have had some issues with my temperture sensor when i start the car it goes all the way to hot and i can shift at 8 but when i fiddle with it and it drops down to cold it only shifts at 7 just over.........and for the ecu im running a integra ecu.the motor is in a 1991 civic cx that was converted all into an si.....

so when i go to order parts for this motor i should say that its an 86-89 integra because i didnt think of that b4 i did the swap?!
thx

crazyae

iTrader: (2)

ECT for hondas are all similiar thermistors, you can use any honda ect. If you are really worried just use one from a 91 and below civic. I am assuming you dont have an engine light, but thats because obd0 ecus don;t monitor the rationality only high/low readings of the sensor to trip the engine light. If you have a number of ect sensors around from a variety of hondas just use one as its the ecus part to set the high and low settings of the ect.

2xtreme

i have put alot of time and money into this car and i just dont want do deal with it ne more. 1 because i have a bmw and i cant drive it as long as i have this civic "insurance purposes" and 2 i just dont have the time ne more..... if ne one wants it 2000 bucks can take it..... 2 much 2 list..thx guys for the information... greatlyt appreciated

crazyae

iTrader: (2)

i hope your not giving up on it because of this issue....are you? Every car is going to have problems !

JDm_92

There are NO Vtec versions of the sohc zc...you can make one, but they do not come vtec from the factory

2xtreme

yea i kinda am bud i might just sell it and get a integra gsr cause thats what i really want. i need a good mechanic 2 take a good look at this car and tell me what exactly it needs cause i knjow that the car is capable of so much more.....do u know any 1?

JDm_92

is it a noticeable problem? because im pretty sure dohc zc's have pretty low torque....my b16 feels sluggish at low rpms too...but im not gonna get rid of it because of that!

crazyae

iTrader: (2)

Ofcourse, shoot me a pm and i will be more then willing to help you out.

yeah my applogies they dont come in vtec


we had one in my friends car and his motor was fairly torquey compared to any other d-series motor. B16's lack torque i know, thats one downfall! What are the plans for it???