ok, I have a 91 civic si, I want to do a zc swap, when people say it bolts right in, does it really just bolt right in? no other mods needed? ive searched im sorry if Ive pissed you off with such a stupid question , im new to this forum. if anyone has a a guide or whatever that would be nice thankyou.

-Jon-

 

zc is alot of fun when you take it just above 8k rpms......

 

yes the zc will bolt right in. it will use your existing mounts, it's bolt up to your tranny. you just have to run two wires and your done. if you are lucky enough to get a zc with the jdm wiring still attached to it you don't even need to run those two wires.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by SIRX &raquo;</TD></TR><TR><TD CLASS="quote">yes the zc will bolt right in. it will use your existing mounts, it's bolt up to your tranny. you just have to run two wires and your done. if you are lucky enough to get a zc with the jdm wiring still attached to it you don't even need to run those two wires.</TD></TR></TABLE>

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by gumbii &raquo;</TD></TR><TR><TD CLASS="quote">zc is alot of fun when you take it just above 8k rpms......
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Is it even making power up there? Sounds like it would be a waste of motor to rev it that high... Granted, my tach sometimes reads around 8000 rpm, but with a stock 89 integra ECU, it is no where near that high (closer to 7400-7500).

I'd just hate to see this dude thrash his 'new' ZC for no reason.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by therealciviczc &raquo;</TD></TR><TR><TD CLASS="quote">

Is it even making power up there? Sounds like it would be a waste of motor to rev it that high... Granted, my tach sometimes reads around 8000 rpm, but with a stock 89 integra ECU, it is no where near that high (closer to 7400-7500).

I'd just hate to see this dude thrash his 'new' ZC for no reason.
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I forgot to touch on that. The ZC stops making power around 7400ish, it will constantly make power up to around 7000-7200 & then it will start declining. There is no point to revving higher unless you have cam's or something that will keep pulling past fuel cut off, and then you will also need a chipped ECU, and a valvetrain on top of the cams. IMO it's not really worth it. I've got a ZC w/ I/H/E/Hiflo Cat/AEM alternator pulley, and it is a fun motor for a budget. G/L

 

not to hijack the thread, but here is a dyno plot of my car. only an exhaust...stock intake and header...



you can see the power dropping off after 7k rpm. i don't think an I/E will push the power curve 1k rpm...

 

I was off a couple hundred rpm's- just more proof that the butt dyno & stock tach aren't always the most effective measuring devices thanks Keith

 

can anyone give me a website with the motor and the jdm wireing? I have many sites for the engine. pics of your zc's would be nice as well
and one more thing, are they emission legal

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Jonhren &raquo;</TD></TR><TR><TD CLASS="quote">can anyone give me a website with the motor and the jdm wireing? I have many sites for the engine.</TD></TR></TABLE>

what are you referring to? The "JDM Wiring" is just the wiring harness for the engine. When I got my ZC it came with a harness that was all cut up & missing plugs so don't count on that coming in good condition. All that needs to be done is to rewire the Si harness plug for the dizzy, and then to extend two wires for the Cam Angle Sensor on the front of the valve cover- it's very easy.

 

just curious, why does it have to be an Si civic? is it the ecu?

 

If you are asking why the car receiving the motor has to be an Si- it doesn't, it's just easier. We were referring to an Si due to teh title of the thread.

 

whats the easiest model besides the si to do it?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Jonhren &raquo;</TD></TR><TR><TD CLASS="quote">whats the easiest model besides the si to do it?</TD></TR></TABLE>
The HF since it has the MPFI.

Anyways, why the swap?
The A6 engine can easily put out as much power as the ZC...
Is your motor in bad condition? Because if it's not the the money you gonna spend on the ZC(I paid 895$) you can spend on building your motor...

Just my 2 cents..

I had an HF with a 68hp engine, that's why I went with the ZC, but your car is rated at 108hp, so there's not much difference...

 

ZC runs out of cam well before 8k. Pointless to rev that high, unless youre trying to spin a bearing or float your valves, lol.