Can I do Rear end alignment on 96 993?

[trevs911]

96' 993 Can I do the rear end alignment my self? If so how do I do it?
Inside of rt rear tire wears badly. I put a level on side of tire, top needs to come out
about 1/4 "or so.Thanks!

[Flieger]

You cannot set kinematic toe if there is anything wrong with that.

[Jim Richards]

Originally Posted by trevs911

96' 993 Can I do the rear end alignment my self? If so how do I do it?
Inside of rt rear tire wears badly. I put a level on side of tire, top needs to come out
about 1/4 "or so.Thanks!

By design, they all have negative camber, trevs.

Even though I could do a pretty reasonable home alignment on an early 911, I wouldn't try aligning the rear of a 993 myself. After I did an engine drop a few years back, my rear alignment was all goofy, even though I tried to readjust everything back the way it was when I disassembled it. Unfortunately, it just wasn't good enough to avoid the trip to the shop to get an alignment done. My 2 cents.

[Don Plumley]

It is an above-average difficult alignment due to the K-Toe. When I watched Tyson set mine, he was also working on bump steer, which involved removing the shock to check travel, reset height, rinse, repeat. It's also an alignment that many shops do wrong - so you will really want to do it with someone that knows 993's.

[johnsjmc]

There are lots of threads on Rennlist about 993 alignment. With a digital level ,and a tape measure you can do most of the changes. The kinematic adjustment requires a special measuring tool. There are a couple threads that attempt to set the kinematic at a certain number of degrees different than whatever the camber link ends up at.. I just had an alignment done at a local muffler shop for $100.The nearest kinematic guage is about 150 mi from here so I took my chances. They were unable to measure or change the kinematic but set everything else and the before and after drive is much better. The printout showed most of the error was rear toe . Resetting that brought the camber closer to spec as well.. I needed the alignment because I had dropped the rear crossmember and despite marking everything it was clearly off after reinstalling it . I am a retired tech know what I am doing and would have spent all afternoon doing an alignment with a level and tape . Why bother. You can get a reasonable job from a regular service shop if they are willing to touch a 993.

[bobt993]

The kinematic is critical if the car is at the track. Even with solid bushings it affects the toe in cornering. Your best tool for measuring this is the Autometric gauge that hangs off the brake caliper. You need to change out the bolts on the rear of the caliper to allens to hang the gauge off of. The car must be completely levelled and if using strings accuracy must be +/- no more than a 1/32nd to get it right. You also need a really good camber gauge like the longacre and turn plates. (if no turn plates it will take along time to do this setup). Also change the rear toe links to Tarrett or similar and remove the eccentric adjustment since it moves easily.

Okay all that said take it to a shop that does race alignments. Ask if you can watch for some of the setup just to see the involvement so you may learn how each arm works on the car.