I have a 92 USDM GS-R tranny. Is there an OEM ring gear and countershaft I can order to give it the 4.78 FD ratio? They may need to be replaced anyways because it was shimmed incorrectly by the tranny shop and has had a lot of freeplay and been pretty noisy for almost a year. If I can't do the 4.78 FD can I use the 94-01 4.4 ring and countershaft or just the 92-93 GS-R one? Thanks.

 

the ys1 internals are just like all hydro b-series, meaning you can get the 4.78 final kit just like you would for a hydro tranny

 

anyone else want to confirm this? If I did this I would need a JDM ITR FD and countershaft right?

 

yeah, try checking the index that's stickied.

 

I don't know off-hand anyone that has done what you're asking, but I do know that the JDM Type-R 4.785 final drive gear set is a direct replacement for any 97-01 USDM Type-R and 94-01 GS-R transmissions. My guess would be that it would also work for the 92-93 GS-R as well.

If you have an LS transmission, then I believe the 5th gear is also required to make this work.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by SuzukaBlueAP2 &raquo;</TD></TR><TR><TD CLASS="quote">I don't know off-hand anyone that has done what you're asking, but I do know that the JDM Type-R 4.785 final drive gear set is a direct replacement for any 97-01 USDM Type-R and 94-01 GS-R transmissions. My guess would be that it would also work for the 92-93 GS-R as well.

If you have an LS transmission, then I believe the 5th gear is also required to make this work.</TD></TR></TABLE>

yes except the 5th gear is optional. but most people reccomend the ls 5th to reduce the cruising rpms. the jdm itr coutnershaft 1st gear or an infinitude 3.0777 1st gear is required