November 1, 200718 yr I put a RX LSD in the back of my wagon a week ago, and now that I'm running RWD temporarily, I've noticed a couple things about it. First off, when put under load it pretty much locks solid. It's like driving with a welded rear when you pull out and take a turn at the same time. The inside wheel (235/75r15 BFG all terrain) will scuf the whole way round the turn. As soon as you release the load on the diff, it releases and stops scuffing. Not sure if this is normal operation or not, I didn't think they locked this tight. It's easy to get the car completely broadside on pavement because of this. The second thing is that under a partial load while turning, it will kinda chatter, It sounds almost like a broken spider gear, but it's fine when it's coasting and fine when it's under full load and fully locked. It's a really anoying thing because it puts a lot of impact load on the rest of the drivetrain, plus you look like a fool backing out of a parking space while the car is kicking like a bastard and clanging. When I took the diff apart to change the ratio, it only had about 3/4 of a cup of black and thick gear oil in it. There was a fair bit of residue on everything in the case. The bearings weren't galled or blued though, so I hoped it had survived. The break away torque checks out too when the rear is up in the air. I put 80/90 GL5 LSD gear oil in, which I assumed was the right stuff.
November 1, 200718 yr Either way you have a bad LSD. This is a viscous LSD i think, which means the viscous part and clutches are sealed. Nothing you can do can change that fact. If it was the disc clutch type, you can try some additives, but i dont think soobies had those. nipper
November 1, 200718 yr Either way you have a bad LSD. This is a viscous LSD i think, which means the viscous part and clutches are sealed. Nothing you can do can change that fact. If it was the disc clutch type, you can try some additives, but i dont think soobies had those. nipper If its an EA LSD, then its a clutch type, not a viscous since the Legacy SS got a viscous LSD in it. Either way, sounds like a bad LSD chunk and would need to be rebuilt. Somethings not right in it
November 1, 200718 yr +1 on it's probably toast... If you don't mind wasting $5, try adding MORE LSD additive... when I converted the Rx it was locking and poping all the time around corners... so I drained some of the premixed oil out and added a tube of straight.... Other then that it is probably done.
November 1, 200718 yr Those are pretty tall tires you are running. Could the extra diameter be enough to trigger the locking on "normal" turns? If you have a set of standard rims/tires, try them out to see if the diff still does this.
November 1, 200718 yr MEchanical ones operate differntly then viscous. Mechanical units are always locked, so to speak. The inertia of the axles running at differnt speeds during a turn over-ride the clutches to make them disengage. nipper
November 1, 200718 yr Author +1 on it's probably toast... If you don't mind wasting $5, try adding MORE LSD additive... when I converted the Rx it was locking and poping all the time around corners... so I drained some of the premixed oil out and added a tube of straight.... Other then that it is probably done. So did this help?
Please sign in to comment
You will be able to leave a comment after signing in
Sign In Now