vagen Posted January 7, 2010 Share Posted January 7, 2010 I've been pondering this for a while... is there an LSD that will fit the RX trans so I can have more traction? Link to comment Share on other sites More sharing options...
Jerry DeMoss Posted January 7, 2010 Share Posted January 7, 2010 Yes, the most common one people have used is the phantom grip one. I think that is the correct name? Link to comment Share on other sites More sharing options...
vagen Posted January 7, 2010 Author Share Posted January 7, 2010 I would prefer a real LDS instead of a spring loaded chunk of tin stuck in the spider gears. Link to comment Share on other sites More sharing options...
idosubaru Posted January 7, 2010 Share Posted January 7, 2010 yes - this has been covered a good bit here already with recommendations on cheaper units and the really expensive ones. Link to comment Share on other sites More sharing options...
vagen Posted January 8, 2010 Author Share Posted January 8, 2010 the search function was no help so I posted. Link to comment Share on other sites More sharing options...
The Beast I Drive Posted January 8, 2010 Share Posted January 8, 2010 http://www.ultimatesubaru.org/forum/showthread.php?t=49241 that thread covers pretty much everything -Bill Link to comment Share on other sites More sharing options...
Numbchux Posted January 8, 2010 Share Posted January 8, 2010 Yes, the most common one people have used is the phantom grip one. I think that is the correct name? no. Phantom Grip does not make anything for subarus, Mud-Rat put a phantom grip in the front of a D/R 5MT, and it blew up not long after. the cliff notes from that thread linked (and there's one more recent in the retrofitting section), is the front diff is the same for all subaru 5MTs. now, only a handful of the highest-end jdm 5MTs got front LSDs, so finding a used one in decent shape is unlikely. But, many companies make aftermarket ones... But be prepared to shell out a grand for a cheap one, and 3-4 for a nice one. Also, WJM put an aftermarket front LSD in his RX. and after a few events, his comment was that it wasn't enough to compensate for the open center diff. a stock EJ center LSD would be a much better improvement. Link to comment Share on other sites More sharing options...
WJM Posted October 17, 2010 Share Posted October 17, 2010 Also, WJM put an aftermarket front LSD in his RX. and after a few events, his comment was that it wasn't enough to compensate for the open center diff. a stock EJ center LSD would be a much better improvement. Where and when did I say that? I purchased the OBX unit for $358 shipped but never installed it. A front helical LSD for a vehicle used primarily on PAVEMENT would be the best improvement. Installing a VLSD center would be worthless on the same application. 5MT WRX's are junk when trying to drive spirited. The RX was just a tad worse due to absolutely no LSD there. Doing BOTH the front and center would yield awesome results. HOWEVER, if you have one or both: 1. Too much power. 2. No enough tire/suspension grip. A front LSD isnt going to do you much good and a center LSD will do you less than what a front LSD will do. Again, doing both solves a lot of problems. Of course, proper tire/suspension grip AND proper power level (you can add more with other items corrected) + LSD diffs solves the problem completely. Link to comment Share on other sites More sharing options...
vagen Posted October 17, 2010 Author Share Posted October 17, 2010 I think the 225/45/15 hoosiers I have mounted on pugs will be adequate traction for most anything I can get out of this engine. Link to comment Share on other sites More sharing options...
WJM Posted October 17, 2010 Share Posted October 17, 2010 No, you need the OBX front LSD. Link to comment Share on other sites More sharing options...
vagen Posted October 17, 2010 Author Share Posted October 17, 2010 ok Link to comment Share on other sites More sharing options...
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