Taken from a ZC brochure. That's a ZC engine cut away. That's the Europe tailgate badge for a ZC powered Civic/CRX, and that is a Honda F1 car of the right era. Cool!
Dutch ZC specs (214kb)
the 89 DX and the 89,90,91 CRX use the same size shaft and same number of splines on the transmission. The 89 DX clutch disk and pressure plate is smaller in diameter by about one inch than the CRX Si. Although the flywheel is the same diameter on both. As long as you stay with one or the other it should work fine.
" The scoop on the headers, is that while the bolt pattern for the Civic SOHC engines and the ZC engines are identical, the port pattern is not. The ZC engine has the ports shifted almost 3 mm (appx 1/8"). In real terms, this means that when you use the SOHC header, the ports do not align properly. The exiting exhaust gases literally run into one edge of the misaligned header flange. You can see this by holding the steel exhaust gasket from the ZC engine up to the DC header.
The easiest and best solution is to use the ZC gasket as a template and mark the misalignment. Using an air grinder, with a small stone "port" the header to match the ZC port configuration. While you're at it clean up the entry point of the header a little so that the whole port on the header is slightly larger than the ZC port. It is an old, but proven trick that the larger header port decreases the chance of exhaust gas reversing flow and re-entering the still open exhaust valves. It is better to have the port larger than to have them matched identical. Do not under any circumstances grind the port on the head to match the header though. This gives poor results."Tuning the ZC
Posted by Victor on November 25, 1997 at 21:53:23:
Just had my crx with a zc motor, dc headers, k&n, ultraflo, straight pipe, and stock ecu dyno. Baseline run came out to be 112.1hp, 98.6 ft-lbs @ 6800 rpm at the wheel. After installing cusco cam sprockets(v-tec), it increased to 118.8 hp, 107.0 ft-lbs at 6800 rpm at the wheel. This gain was not as significant as the power gain at 3000 rpm to 5000 rpm which was a gain of 16.2 hp and 26.9 ft-lbs. All runs were made on 3rd gear on a stock si tran. Like to thank Aries at dynamic autosports for his bomb-ass hypertuning adjustments!
3G ZC Swap
You need an 87 Integra parts to run an 87 F.I. ZC motor:
|d16a1 = 1st gen 'teg|
d16a8 = euro w/o cat
d16a9 = euro with cat
zc = japan (jdm)
|89 Integra valve seals DO FIT a ZC|
Message by Rocky on November 04, 1998 at 10:41:28
From: Anthony Roddick My car is an original factory equipped 1988 ZC Civic hatch Si with the bulge in the bonnet. engine zc 1590cc idle 730rpm manual 700rpm auto static timing 16 deg BTDC manual and auto compression measure at 250rpm and wot----nominal 192psi(1,324kPa, 13.5kgcm2) minimum 135psi(932kPa, 9.5kgcm2) maximum variation 28psi(196kPa, 2kgcm2) cylinder head warpage limit 0.05mm(0.002") height 131.95-132.05mm valve clearances inlet 0.13-0.17mm(0.005"-0.007") exhaust 0.15-0.19mm(0.006"-0.008") stem to guide clearance in 0.02-0.05mm(0.001"-0.002") limit 0.08mm(0.003") ex 0.05-0.08mm(0.002"-0.003") limit 0.12mm(0.005") valve seat width ex&in 1.25mm-1.55mm(0.049"-0.061") limit 2.0mm(0.08") fuel - 96+ octane unleaded
Timing Belt:-----1988 Prelude 2.0
AC Compressor / Parts:-----1989-91 CRX/Civic
Throttle Body:-----1988-91 CRX/Civic
ECU:-----1989-91 CRX/Civic Si, 88-89 Integra 5-spd, 89-91 ZC
Headers/Exhaust Manifold-----88-91 CRX can be used port will not be perfect---Ideal is DC 86-89 Integra Top with 88-91 CRX downpipe---(I use port matched GUDE 4-1 Header)
Plug Wires:-----1986-89 Integra
Spark plugs:-----1986-89 Integra or 1988-91 CRX/Civic----- NGK BCPR6E-11
Distributor Cap:-----1988-91 CRX/Civic 1988 Integra
Distributor Rotor:-----1988-91 CRX/Civic 1988 Integra
Head Gasket:-----1988 Prelude
Intake Gasket:-----1988 Integra
Exhaust Gasket:-----1988 Integra
Water Pump:-----1989-91 CRX
Oil Filter:-----1988-89 Integra-----Fram PH3539A
Oil Pan Gasket:-----1988-91 CRX/Civic or 1986-89 Integra
Flywheel from 1989-91 CRX Si may be used
4 speed 88-91
5 speed DX 88-91
5 speed Si 88-91
5 speed ZC 88-91
ZC Pressure Plate:-----1989 Civic DX
ZC Clutch Disk:-----1989 Civic DX
I know these have been asked before, and I know they will be asked again,
but here are a few ZC tranny questions.
1.) For axles, I use the ZC halfshafts, 90-93 teg axles, and the 90-93
axles fit on all the 4G hubs?
2.) Which clutch, preassure plate, and flywheel do I need? 90-91?
3.) Does Quaife make a limited slip that would fit the ZC tranny? Are
the diffs in the ZC the same as in the other 4G's?
1) A better choice of axle would be two 88-91 Civic/CRX DX/Si right
hand axles with 90-93 Integra inner joints. If you have a CRX HF or
Civic Standard model a custom job is called for. OR you can use 88-91 DX\Si knuckles and hubs and make your life simpler.
2) The clutch should match the year of the transmission you have, 88
if it is an 88 and your choice of 89 or 90-91 if the transmission is
89 or later.
3) Yes they do, I have one, it is not available through Autotech
If the tranny is an 89 or later you may use a 90 91 clutch, pressure
plate and flywheel.
I'm wondering whether it is worth it to pay extra for the ZC Tranny, with the Integ axles, rather than the Si tranny?
1st: 3.250........ 3.250
2nd: 1.944........ 1.894
3rd: 1.346........ 1.259
4th: 1.033........ .937
5th: .878........ .771
final 3.888........ 4.250
ZC has a closer ratio and through the tranny is slightly lower
gearing. If you are doing the daily driver thing and want an LSD,
buy a ZC and leave it alone. The price with axles will be around
what you'd spend on a Quaife.
If you wana have a sweet street/strip racer, put the Si final drive
in the ZC.
Dave is doing up Ryan's ZC tranny with the SI final drive.
Everything went smooth except....the RING.
It holds back the pinion about 7mm.
This is due to the ZC casing being a little different than an Si's casing. Our plan is to keep the ZC tranny because we use 90-93 Integra axles with it, and 3 peice axles are better than 2 peice axles (on civic/crx's). So now, Dave is gonna get the ring milled a tad bit so it puts the pinion up where it's suppose to be in it's stock location. This should be done by thise weekend (1-23-99).
(C) 1996, 1997, 1998, 1999 HYBRID
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