jdm tranny vs. usdm ? - Honda Prelude Forum

N8_94SI · 09-22-2003, 05:30 PM

What are the differences in these two transmissions?? Is the gearing or does the jdm come with a LSD? I'm replacing my tranny, clutch, and flywheel and need to know which one I should go with..thanks.

red92s · 09-22-2003, 05:53 PM

I don't believe there is an appreciable difference in the gear ratios. SOME (not all) JDM tranny's are equipped with an LSD. Satan_SRV can probably tell you the tranny codes for USDM/JDM/JDM-LSD trannys.

N8_94SI · 09-22-2003, 06:05 PM

since I'm replacing my tranny do u think it would be worth it to buy a jdm h22 tranny with lsd, or just replace my si tranny with another?

Satan_SRV · 09-22-2003, 09:34 PM

USDM H22a tranny is M2F4 it's the same as the JDM M2A4. The JDM M2B4 is the same as the other except is has an OEM LSD. It's nothing reeeealy special but it's an LSD.

JaXx4k · 10-14-2003, 04:42 AM

Quote:

Originally posted by Satan_SRV
USDM H22a tranny is M2F4 it's the same as the JDM M2A4. The JDM M2B4 is the same as the other except is has an OEM LSD. It's nothing reeeealy special but it's an LSD.

so it still grind lik the 97+ USDM 5th gen?

Satan_SRV · 10-14-2003, 10:14 AM

It can. Really depends. I had a 5th gear grind on my 4th gen tranny. And I have one on my euro-r tranny

willmbrk · 10-14-2003, 05:53 PM

Is the LSD really worth it on a front wheel drive car?

Dr. James · 10-16-2003, 04:13 PM

Quote:

Originally posted by willmbrk
Is the LSD really worth it on a front wheel drive car?

Are you serious? Of course they are worth it. They make a huge difference, especially when pushing the car to the limit. I have a Quafie in my tranny, and it was a night and day difference. Probably the best mod I ever installed on the car.

Oh, and how is it that you guys wind up always having a bad 5th gear synchro? What are you doing to them? I had an FI prelude with over 140K miles on the original tranny, and it never had a problem with grinding. As a matter of fact everyone of my Preludes have never had this problem.

DanYO · 10-16-2003, 04:23 PM

i have no idea how mine started, just one day i try to put it into fifth and..... .RRSRRHAHKFJDHBDGHSDKfjs wtf!? aaaaaaaawww man. then every single time after that it has grinded unless i double clutch. i never tried to force it in or anything stupid so i have no idea why it started.

vtecspd · 10-16-2003, 04:26 PM

I had a fifth gear grind on my 4th gen Lude but it was driver induced. I was autoxing on a tight 3/8 mile high band oval and when shifting to third coming off the high bank, I hit fifth instead. It didn't go in smoothly to say the least and never shifted into fifth again quickly, without grinding. I played stupid to the Honda rep and got them to replace the fifth gear syncro under warranty.

[SUB[EX] · 10-16-2003, 04:39 PM

This is my 2nd tranny with a 3rd gear syncro going. First my f22 trans and now my si trans.

And im in the market for a jdm vtec tranny now

JaXx4k · 10-16-2003, 04:51 PM

this might help... http://preludeonline.com/showthread....hreadid=137760