970subaru Posted January 23, 2006 Share Posted January 23, 2006 who has done it? is it even possible? tips for getting a good gear pattern? worth it for low traction driving ie rallycross/ice racing? also what is the difference between LSD and VLSD. also opinions on welded rear diff in a 5mt car for rallycross? Link to comment Share on other sites More sharing options...
970subaru Posted January 23, 2006 Author Share Posted January 23, 2006 which is the better LSD I should use for this? what to find it in? Link to comment Share on other sites More sharing options...
Numbchux Posted January 23, 2006 Share Posted January 23, 2006 I'm not exactly what you're asking, or for what car. but I do know that many newer subarus came with 4.11's and a rear LSD stock. Forester XT's I think.... the reason we don't do it to our older gen cars is the front diff is completely different, and, thus-far, there is no way to get the 4.11's in the tranny, therefore a rear 4.11 LSD is worthless that being said, I have a clutch-type EA82 rear LSD converted to 3.9 to match my tranny, and it's AWESOME in almost any condition, the only time that it gave too much slip, was when I had one rear wheel about 3 feet in the air, in a 'ditch' so I couldn't pull myself up the next hill, but I jockeyed the car and it pushed right up it....I've heard the viscous ones aren't as tight in an offroad application like that one, but might still work well for rally/iceracing Link to comment Share on other sites More sharing options...
970subaru Posted January 24, 2006 Author Share Posted January 24, 2006 sorry, should have been more clear. I have a 1991 legacy with 4.11 5mt trans. I want to put an LSD in the rear diff. 4.11 LSD is a JDM deal only, so I want to use the far more common(and cheaper) clutch type in my car which as far as I know came with 3.7 or 3.9 gears. basically what I want to know is, is it better to swap gears to the LSD diff or swap the LSD guts to the 4.11 diff? I would rather do the LSD swap to my gears to avoid having to set a gear pattern which I dont feel comfortable doing just yet. or if you have experience in setting up diffs tell me a step by step. also, are there rebuild kits and replacement clutches in the even that the diff I find needs a rebuild? Link to comment Share on other sites More sharing options...
Vanislru Posted January 24, 2006 Share Posted January 24, 2006 You can use any rear r160 clutch type lsd with your 4.11's Link to comment Share on other sites More sharing options...
Numbchux Posted January 24, 2006 Share Posted January 24, 2006 oh, yep, if you get an LSD carrier from another subaru, I bet the swap would be virtually identical to what we old-gen people do all the time. check the repair manual for the write-up Link to comment Share on other sites More sharing options...
970subaru Posted January 25, 2006 Author Share Posted January 25, 2006 oh, awesome! I never even looked at that part of usmb. thanks all. Link to comment Share on other sites More sharing options...
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