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Old 06-13-2011, 11:28 PM   #4 (permalink)
Cyborg ECU
California98Civic's Avatar
Join Date: Mar 2011
Location: Coastal Southern California
Posts: 6,052

Black and Green - '98 Honda Civic DX Coupe
Team Honda
90 day: 66.42 mpg (US)

Black and Red - '00 Nashbar Custom built eBike
90 day: 3671.43 mpg (US)
Thanks: 2,282
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Final drive on Civic auto trans

Looking over the 96-98 Honda service manual, I noticed that the final drive 4th gear on the automatic transmission is taller than the 5th on the manual. On the auto it is 0.638 and on the manual it is 0.702. That's a pretty big difference. I think it is better than the 98 HX. Is there any reason to think it could not be swapped (I know it's not regarded as totally practical). I'd just like to know, in case someone drops one in my beggars cup one day I want to know if I can use it.
See my car's mod & maintenance thread and my electric bicycle's thread for ongoing projects. I will rebuild Black and Green over decades as parts die, until it becomes a different car of roughly the same shape and color. My minimum fuel economy goal is 55 mpg while averaging posted speed limits. I generally top 60 mpg. See also my Honda manual transmission specs thread.

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