6 speed & NSX-R 4.2 final drive

[whrdnsx]

Hello
I'm about to remove my transmission to do the NSX-R 4.2 diff gear upgrade to my 6 speed.

I have a 5 speed diff ready but was curious,

Does the 4.2 diff gear actually not fit the 6 speed diff?

I see the part numbers are different for the OEM 4.06 diff gear for the 5 speed & the 6 speed but one of the diff covers is the same for both transmissions, indicating the the diff gear must have the same bolt pattern.
Is it the internal LSD teeth/gears different? I don't have the 5 speed diff gear to compare.

If someone could clarify that would be appreciated.

Thanks

 

[MaxGeek]

I don't know if this answers your question, but it sounds like if you have a torque reactive diff it won't work for either 5-speed (1995-1996) or 6-speed.

(Note last post says 2002 is still torque reactive)
http://www.nsxprime.com/forum/showthread.php/20801-4-23-final-drive-ratio-and-your-6-spd

(EPS errors with 4.23 in the 6 speed)
http://www.nsxprime.com/forum/showthread.php/23885-Got-the-4-235-installed-in-my-2002-NSX-T?s=

 

[whrdnsx]

Ok, from what I read it's the internal teeth of the diff that are different, straight for the early 5 speed diffs & helical for the later model diffs.