[perelet]

Alignment

Well after I put that all together. I started to align. I run 12' per side - stock toe. Toe barely aligned - to get to stock toe I had to remove steering stops and even after that - this is how much thread was left:



Also my camber maxed out at 1deg negative - no good.

Now returning back to this discussion back from Feb 2013

Originally Posted by Captain Ahab Jr

just revisiting this informative thread and thought I'd share some pictures and ask some more questions

I've found some photos of the 964 and 993 front suspension side members and can spot a few differences

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Note the thicker webs and extra web at the forward front wishbone mounting point, also the wishbone mounting axis looks like it is positioned a little further outboard than the 964, does this easily give extra camber??

There is another 993 side member used on the RS and C4/TT but I have not found any photos so am assumming it is stiffer or has extra mounting holes for the front diff than the 993 C2 version

....

and this:

Originally Posted by Bill Verburg

the main difference between 993C2 and RS/C4 longitudinals is the mounts for the differing brake boosters

993C2 and C2S both have vacuum boosters mounted to the longitudinals as seend here
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RS and C4 have electro-hydraulic units mounted in the trunk, that area is clear on those cars

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If possible can you measure the A-arm(wishbone) o/s difference?

I remeasured 993 and 964 A arms and geometry is pretty much same.

Ordered and got 993 longitudinals. WOW - that is the most 993 unique piece of 993 front suspension! Looks like porsche engineering did some serious work here ...




So 993 longitudinals push control arms out about 10mm per side - that explains official difference in front track between 2 cars!

Here's pic of another side:


Weights




After installation of new longitudinals I had to move stops on swaybar - again about 10mm outside:




After this change - plenty of thread for alignment and steering stops in place:



at stock toe:


I got about 2.5 camber at 964 RS height with plates maxed out. Still not huge. One thing that makes me think - on 964 upper mounts are close to each other - this gives extra room for camber. Camber plates were designed for widebody 993 which made me think that installing RS camber plates on narrow body 993 is probably not best solution ....

So on 964 993 longitudinals is way to go. Also on 964, because upper mounts are "narrower" you get extra camber.

Oleg.