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Old 05-14-2018, 02:12 AM   #2 (permalink)
Bense
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Thank you for posting the links to Hondapartscheap, as it's exactly where I would have looked to confirm.

I reviewed a few other things, and I'll just go ahead and post my notes here:

Specs of the trans, which shows the 1-5 ratios:
* Vehicle Specifications | 2004 Honda Civic Hybrid | Honda Owners Site
* Vehicle Specifications | 2008 Honda Fit | Honda Owners Site

Quote:
Originally Posted by 2004 Civic Hybrid
3.462
1.870
1.241
0.912
0.711
F - 3.600

Quote:
Originally Posted by 2008 Fit Sport
3.462
1.870
1.321
0.970
0.757
F - 4.290


My estimations of fit sport teeth count:
3.462 - 45/13
1.870 - 43/23 or 58/31
1.321 - 37/28
0.970 - 33/34 (or 32/33 or 31/32)
0.757 - 25/33 (or 28/37)
F - 4.290 (73/17)

And if my final drive estimations are correct, then 3.600 is likely 72/20.

Mainshaft is same p/n. However the countershaft 2nd gears are different. This is likely because the fit sport has a dual synchro cone 2nd gear, whereas the '04 hybrid is single cone synchro (this is similar to what Honda did for B18B vs B18C1 2nd gear).

Everything looks good, and I would be very surprised if it were not a 100% direct swap. I also checked to see if the 0.711 fifth gear could also be swapped, and everything checks out.


I always suggest replacing the input shaft bearing (ISB) + seal when transmissions are split apart.
ISB: https://www.hondapartscheap.com/oem-...tn-91002ps0013
Seal: https://www.hondapartscheap.com/oem-...k-91216phr003/

Tool: https://www.harborfreight.com/3-jaw-...ller-4876.html

To install new input shaft bearing, drill out the bearing cage of the old ISB (after you remove it), move all the balls to one side of the bearing, pop the inner race out. Place the old outer race on top of the new ISB, then place a 2x4 on top. Tap in with rubber mallet.

Please snap some pictures for me to use in my 'trans library'
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