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88-91 civic tranny

Discussion in 'HYBRID -> ED-EF / DA' started by Civic_88ls, Jan 15, 2004.

  1. Civic_88ls

    Civic_88ls Senior Member

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    My friend has a 91 civic si and his tranny is gone and he picked up a tranny the other day and he doesnt know anything about honda motors or trannys and when i got there to help him put it in, i noticed that it was one from a dx that he got and the retard motor place said it was from a si. The writing on it was d15. so we took it back and they gave us another one and the writing on this one is zc. I was wondering, on the serial number on his original one starts with a SL3 and the dx one that we got and took back started with a L3 and the one that he gave us as a replacement and is suppost to be a zc says L3 also and was wondering if that makes a difference or not because the guy said it was just L3 is japan coding and SL3 is us coding. im confuzed.

    I want to make sure we got the right one. either one will bolt up fine., i know that but i dont want ghetto dx ratios. :huh:
     
  2. thegreat1310

    thegreat1310 Senior Member

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    if you got a zc trans you will need 90 integra axles and a 20 spline clutch disc
     
  3. Civic_88ls

    Civic_88ls Senior Member

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    the clutch he has works just fine and i know we need 86-9 integra axles and NOT 90. i know all that. all i wanted to know was about the serial number coding. thanks neway.
     
  4. jlicrx

    jlicrx Senior Member

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    86-89 integra axles will not work with the ZC transmission in a 91 Civic Si - they are about an inch too short and will pop out of the transmission - with the ZC transmission, you must use the ZC intermediate shaft (no other one will fit) and the 90-93 integra axles -
     
  5. Civic_88ls

    Civic_88ls Senior Member

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    oh my bad.. thnx
     
  6. Sobe_Death

    Sobe_Death Senior Member

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    there is really no way to tell if it is a zc or si tranny externally without figuring out gear ratios and spline count. the L3 code applies to MANY honda transmissions, including the dx, si, and zc transmissions.
     
  7. jlicrx

    jlicrx Senior Member

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    the ZC transmission uses the larger axles like the integra - the splines where the axles go into the transmission are larger diameter - put a 88-91 Civic/CRX axle into the transmission - if the axle is too small, the transmission is a ZC
     
  8. Civic_88ls

    Civic_88ls Senior Member

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    Yeah, thanx. the tranny is a zc cuz his axles are to small. We are having a axle shop put a integra end of the axle on the tranny end so it will fit in there. were figuring this will prolly be the easiest way.
     
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