Hey, i've done some searches from the archives, and it seems quite unclear...

Does anyone know for a fact whether the JDM and USDM 4th gen H22 tranny gear ratios are the same or different? (M2A4/M2B4 vs M2F4) Some claim that the JDM is shorter, while some say they are the same. Anyone have a solid answer, and perhaps the correct ratios? Thanks in advance...

 

Shorter than the M2F4, wow, thats really short

 

I have a USDM 4th gen swap in my car, and i blew the tranny. I then bought a JDM 4th gen tranny and it made me faster in the 1/4. The gears are longer by 5 mph 2nd-4th and i gained 15 mph in 5th gear. So i guess JDM 4th gen tranny is a bit longer.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by 96Prelord &raquo;</TD></TR><TR><TD CLASS="quote">I have a USDM 4th gen swap in my car, and i blew the tranny. I then bought a JDM 4th gen tranny and it made me faster in the 1/4. The gears are longer by 5 mph 2nd-4th and i gained 15 mph in 5th gear. So i guess JDM 4th gen tranny is a bit longer. </TD></TR></TABLE>

Wait, are you saying the jdm tranny gave you a quicker E/T? If this were the case, it would most likey have shorter gearing.


Modified by Wiked935EK at 2:25 AM 5/30/2003

 

Here are some links, not sure how correct they are but they list the final drive ratios for both and they are different.

This one is suppose to be the JDM Lude it even has the individual gear ratios.
http://www.mindspring.com/~jsc....html

This is the USDM , just has final drive ratio , The temple of Vtec used to have all the ratios up but I don't know of anywhere else.
http://www.ntpog.org/specs/index.shtml#gen4

so now you may have half of the puzzle

 

4th Gen
S (F22) M2L5 Si (H23a) M2S4 VTEC (H22a) M2F4

1. 3.307 1. 3.307 1. 3.307
2. 1.810 2. 1.857 2. 1.950
3. 1.230 3. 1.320 3. 1.360
4 0.903 4. 1.034 4. 1.071
5. 0.705 5. 0.812 5. 0.870
FD 4.062 FD 4.266 FD 4.266

M2B4 (JDM LSD) M2J5 (JDM) M2A4 (JDM)

1. 3.307 1. 3.307 1. 3.307
2. 1.950 2. 1.810 2. 1.950
3. 1.360 3. 1.269 3. 1.360
4. 1.034 4. 0.966 4. 1.034
5. 0.787 5. 0.787 5. 0.787
FD 4.266 FD 4.062 FD 4.266

5Gen 97-01 H22A4 (S and SH) M2Y4 (Base) Euro R H22A (t2w4)
1. 3.285 1st - 3.285
2. 1.956 2nd - 2.090
3. 1.344 3rd - 1.481
4. 1.034 4th - 1.071
5. 0.812 5th - 0.812
FD 4.266 FD - 4.266

Spec-s is 5th gen ratio with LSD

damn it the colums got all fucked ,, oh well

edit: fixed the Euro R 5th gear thanks Joel


Modified by prelittlelude at 2:06 PM 5/30/2003

 

[QUOTE=prelittlelude]
Euro R H22A (t2w4)
1st - 3.285
2nd - 2.090
3rd - 1.481
4th - 1.071
5th - 0.870
FD 4.266
QUOTE]

slight correction. that is the Accord Type-R ratios (u2Q7). THe Euro-r has a 0.812 fifth gear.