Just changed the black "taffy" in my real axle. Well.... it wasn't quite the consitancy of "taffy" but it was definitely some ugly shi^H^H^H stuff. Anyway.... prior to changing the "oil", and I use the term loosely, my right rear tire was always the one to chirp when going from 1st to 2nd. Now, after the oil change the left one does the work. Now admittedly I know squat about rear axles. Can anyone explain the interesting phenomena? BTW, I brought it down to the local "Quicky Lube" for the job and the guys just swarmed all over the car. I was even able to talk "Wankle shop" with one of 'em. He suggested I put a 20B in. Yeah right.... I was shocked he even knew it existed. I thought that was pretty cool.

Oh and one other thing...... the guy said he thought my 85 GS had a LSD rear in it. He explained that the rear had "tags" on it and that was a good indication that it had an LSD. Any thoughts? TIA

 

Well, my GSL-SE definatly has the LSD rear end in it (ask me how I know ) and there's no tag to the effect. If you've got drum brakes, then you've probably got an open diff, since only the GSL-*'s came with LSD diffs and they had disc brakes in the rear. Of course you could get a GSL-* w/o LSD, but that's because some people complained about the gear whine from the LSD mechanism and the dealers swapped them out. You COULD have a drum brake axle with a LSD diff in it, but that'd be VERY unsusal, because most people just swap the whole 3rd member because the brake upgrade comes along with it (and it's alot easier than swapping the actual diff, if that's even easily accomplished).

The fact that you're getting a one-wheel-peel is a good sign that you've got an open diff too.

PS, the fluid (if you can call it that) that came out of my diff when I changed it was NASTY. It stank, and glopped out of there and was alltogether icky. The redline synthetic that went in was stinky too but much prettier (clear orange color if I remember).

--matt

 

Do you know if you can put the LSD in a 80 Rx-7?

 

Oh yeah its a direct bolt in if you get the E brake cable, search for it theres a ton of info in 1st gen specific forum By the way the 80 has different brake line threads, to do a full swap you have to change the lines or modify them in some way, also the rear driveshaft mount is different, i beleive you just swap the end for the rear end to the 80 one and your good to go

By the way the wheels will pull differently, it sounds like its working properly

 

Jack up the rear end. Spin one wheel and if the other spins the other way, then it's not LSD. Generally speaking, the LSD RX-7s came from the factory with disc rear brakes.