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zc trans

Discussion in 'Civic and CRX - EF' started by efVTECsedan, Jan 1, 2007.

  1. efVTECsedan

    efVTECsedan New Member

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    i have a 90 lx sedan with a d15b VTEC. i was wondering if the zc cable tranny has shorter gears or any other differences than lx tranny. i have to get a different tranny because mine is about to crap out.
     
  2. USDM CRX DX-R

    USDM CRX DX-R New Member

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    I believe the ZC transmission does indeed have shorter gearing. Just keep in mind that the ZC transmission requires different axles than a DX transmission. It actually uses an equal length setup similar to B-series motors. Also, the D15B block may or may not even have bolt holes to mount the intermediate shaft to the back of the block. So a ZC transmission may not even be possible. Your best bet would be to simply run a 1988-1991 SI transmission if shorter gearing is what you want.
     
  3. phyregod

    phyregod !!YTINASNI

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    Werd. yes, shorter, better gearing. totally possible with parts.
     
  4. phunky.buddha

    phunky.buddha Admin with a big stick Admin VIP

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    Effin Motorworks will stuff ZC guts and new synchros into an Si transmission for pretty cheap. Good guys. :thumbsup:
     
  5. K2e2vin

    K2e2vin Senior Member

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    Only the DOHC ZC and CG(won't work correctly with regular D-series)has the shorter gears. The SOHC ZC has gears similar to the Si/DX. Only differences are the final drives:
    Gear Ratios

    The D15B(and from my experience non of the 88-91 D15s) have holes for the Intermediate shaft, which is different from the B-series one but works with the 90-93 Integra axles. It's not necessary to use the intermediate shaft and Teg axles. What you can do is swap in a big-bearing(EX/Si) differential and countershaft. This will improve the acceleration(from 3.888 to 4.25) and allow you to run the stock axles. This is what I did, but chose a 92-95 EX differential due to the 88-91 differentials having a weak differential pin. Remember to check the shim clearance!
     
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