[Oldporsche]

Your distributor rotates @ 1/2 crank speed. Yes, If you take the distributor out keeping the rotor at the same position relative to the case, and turn the crank 360 degrees and put the distributor back in with the rotor in the same relative position with relation to the case, you will effectively have changed the position of the distributor 180 degrees. When I have to do this, I just pull the distributor out of the case far enough to rotate the distributor rotor 180 degrees and drop it back in.

From your description the position of the valves and cams in relation to the crank sounds about right.

If you can figure out the problems with windows xp, you can do the porsche.

One of the checks I use is making sure that I know which cylinder is number #1. Does the rotor point to number one spark plug wire with the distributor cap on? Simple stuff like that.

Good luck,
David Duffield