A friend of mine has a 90 civic Si with a DOHC ZC engine and a bad Si tranny. He has a ZC Transmission on a pallet and needs to intall it but doesn't know which axles and intermediate shaft to use. I did a search but have had no good results. Please help!!

 

ZC intermediate shaft and 90-93 integra axles...you have to remove the dust ring on the knuckles though...

 

is there any way to get around NOT using the intermediate shaft with this tranny?

cant you just get two inner CV cups and put those on stock axles?

 

Are there any stock USDM int. shafts that will work? All he has is the tranny.

 

Don't ask me for details because I've always managed to get a hold of a ZC intermediate shaft. For the guys who haven't been able to find one, I've heard:
1. Use an Accord driver side axle. '88...I think. Even if i'm wrong on the year, there is an Accord axle that people have reported using.
2. Customize a stock CRX driver side axle. Use the inner joint from a 90-93 Integra
3. Recently, someone figured out a way to use parts from a 88-91 4wd wagon and 88-89 teg intermediate shafts to make one ZC compatible shaft. Neither one works by itself. Read this whole thread for more info: http://www.thezcr.com/forums/s...10858

 

The jdm dohc zc intermediate shaft is a one off, no US counterpart.

I've never tried, but you may be able to get away with using 1986-89 Integra drive axels and intermediate shaft, but i don't know.

 

What's "bad" on the Si tranny that he's got? If the differential & final drive are still good, he should be able to either swap those into the ZC case, or swap the ZC's 1-5 gearsets into the Si case, giving him the closer-ratio ZC gearing with the more aggressive Si final drive ratio, AND he can then run off-the-shelf Si axles on it.

Short of that, he either needs to (a) find a ZC intermidiate shaft, (b) MAKE a compatible shaft like davens described above (the AWD Civic Wagon intermediate shaft by itself doesn't work), (c) make (or have someone make) a custom-fit CRX axle with the right Integra inner joint (but would that work? Is the Integra's inner CV joint the same size as the ZC's intermediate shaft end where it goes into the transmission?), or (d) find out which Accord driver's-side axle works. For the last one, head to the CRX Resource or Honda-Perf.org and look up a guy called "dohcrxl" - he swears he's using the Accord axle on his ZC tranny in his CRX. He works as a tech at an Acura dealership, so I give him some credibility on the subject.

There ARE ways around the ZC intermediate shaft, but all of them seem to require some work, expense, and compromise. Without the intermediate shaft, there will be torque steer. My '91 CRX (DX with Si engine and hybrid tranny using ZC 1-4, HF 5th, and Si final/diff) has noticeably more torque steer than my '90 CRX Si with its stock Si tranny. It's not terrible, but it IS noticeable. Making a custom axle for the driver's side would probably be more expensive than finding a ZC intermediate shaft (I usually see them for $75-100 when they're around), and making one out of AWD Civic and 1G Integra shafts might end up costing more, too. For my money, I'd be looking into the Accord axle; if it works, it's cheap and plentiful.

Mike