Rear Diff. Problems

[livestrong14]

Hey guys, my dad recently swapped out my stock 91' legacy turbo tranny for a jdm 92' liberty rs tranny. In doing so the rear diff binds. My car came with a 3.90 rear diff with viscuous limited slip. I have heard that I can just swap out my stock rear diff with a 4:11 to match the jdm tranny. I really want to have limited slip in my 4:11. Are there any USDM rear diffs that are limited slip and 4:11? any input really helps, thanks, devan

[Wiscon_Mark]

I think the 97 GT came with a rear LSD. Anyone want to confirm this? I'm pretty sure they were all 4.11 too.

[gator gt]

No Mark, it didn't. No BD/BG/BK came with LSD as far as I know.

IIRC, the only USDM cars that came with a 4.111 LSD are:

Legacy:
01+ 2.5L 5MT (excluding Brighton; although I thought they dropped the Brighton name 4 years prior to that... ??)
02+ 3.0L BE & BH 5MT

Impreza:
02-04 WRX 4EAT tranny
00-01 RS 5MT

Forester:
00-02 'S' 5MT
03+ w/ rear disc brakes 5MT


There was a thread in NASIOC with a more substantial breakdown...but since he is concerned with 4.111, thats all I've listed.

Here are my sources:

http://forums.nasioc.com/forums/showthread.php?t=393670

http://wac.addr.com/auto/obs/lsd/lsd.html

GGT

edit: I may be wrong not to include the BE/BH series, but I am unsure about them.

edit on edit: I was wrong about the BE/BH series....I've corrected the post.

[Wiscon_Mark]

I guess the 91 was the only one...damn. I should get one :)

[shazapple]

Are you sure the 98-99 Outbacks didnt get a LSD?

[gator gt]

I'm 98% (w/ a +2% confidence swing) sure that BD/BG/BK series did not get any here in the states.

my original post is updated too....found more 4.111 LSD rears.

GGT

[mranlet]

Are you sure the 98-99 Outbacks didnt get a LSD?

Yes, most definitely open diff.

I am under the impression that all of the pinion gears have the same number of teeth - maybe swapping ring gears would reestablish your 4.11?

+1 to the 00+01 RS 5MT coming with a 4.11 LSD

[Sarra]

I didn't think any of the 3 liter H6's came with a 5 speed?

[Wiscon_Mark]

I didn't think any of the 3 liter H6's came with a 5 speed?

no, but they can interface with an EJ series 5speed.

[Sarra]

I know that. I've seen a few 5 speed H6's, mostly SVX, but a few Outbacks. :) I also saw a 6 speed, but that was at a show in Portland a long time ago.

[gator gt]

Are you sure the 98-99 Outbacks didnt get a LSD?

Yes, most definitely open diff.

I am under the impression that all of the pinion gears have the same number of teeth - maybe swapping ring gears would reestablish your 4.11?

+1 to the 00+01 RS 5MT coming with a 4.11 LSD

open diffs = correct

all pinions have same number of teeth = dead wrong.

examples:
3.900 = 10 pinion teeth & 39 ring teeth
4.111 = 9 pinion teeth & 37 ring teeth
4.444 = 9 pinion teeth & 40 ring teeth
3.545 = 11 pinion teeth & 39 ring teeth

just do the math. 39/10 = 3.9000
37/9 = 4.111111111111111111111111111

and so on.

ring and pinions are SETS. never mix and match. you'll be sorry.



I know that. I've seen a few 5 speed H6's, mostly SVX, but a few Outbacks. I also saw a 6 speed, but that was at a show in Portland a long time ago. Are you sure the 98-99 Outbacks didnt get a LSD?

just wait....you'll see of another H6 6MT combo....sixspeedlegacy is working on it as we type.

madman. mu-ha ha ha :twisted:

GGT

[losdiosdeverde86]

I think the 97 GT came with a rear LSD. Anyone want to confirm this? I'm pretty sure they were all 4.11 too.

yeah, no, my cousin's 97 gt doesn't have lsd.