hysteria411

just wondering if anyone knows if there are any differences in the d series transmissions as far as the final ratios go. i have a eg with the dx auto trans, but if there is another transmission that cruises at a lower rpm on the highway i would like to know about it since i do a lot of highway driving. i know automatics aren't cool, but if anyone can help i would appreciate it.

Hondatherdm

I think ex has lowest gear ratios

94EG8

'92 - '95 Are all geared the same. '96 - '00 are all geared the same. Theres nothing you can do with the automatic to drop the RPMs on the highway. Swapping in a DX 5 speed transmission will net you a significant increase in MPG though.

hysteria411

thank you gentlemen.. would i be correct in assuming that the obd2 transmission doesn't work in an obd1 car?

94EG8

You would indeed be correct.

hysteria411

thank you sir.. hopefully this thread will show up in a search if anyone else has this question, i couldn't seem to find another thread with the answer

Mista Bone

incorrect info on the 92-95 automatics.

EX has a longer 5th gear for lower crusiing RPM, the DX motor doesn't have the torque to pull the EX gear.

D15B7 = .673 4th
D16Z6 = .638 4th

Also there is a difference in line pressures and shift points.

hysteria411

oh cool.. i'm pushing 250k on my transmission so when it eventually dies i guess i'll be looking for an EX replacement

Mista Bone

change the fluid every 15k and it will last a long time.

hysteria411

oh i look after my car, but who knows what happened during the ~230k that i wasn't driving it