Thanks for the interest and encouragement!
For pistons 1-2-3 I could have used some conventional tool as they go into the cylinders like on any average engine. But, since I already have the Porsche-specific toolset for pistons 4-5-6, I just used that.
Here`s what it looks like:
It was something like $80 on Amazon and probably it`s made in China
Everything prepared for the procedure:
Circlip inserted into the tool. Some builders use an extra tool to compress the ring so they can insert it into the tool, I just forced it in with my fingers.
It`s in. I didn`t make pictures of the failed attempts, there were many though. Then I realized I have to hit the slider in the tube quite strongly to smash the circlip into the groove.
Ring compressor. If you don`t want to buy it, you can rent one for free at Autozone.
For arranging the ring gaps, I took my SAAB shop manual off the shelf. Annoyingly, there`s no such manual for the Porsche available for a hobby mechanic like me. It`s not rocket science though, you just have to rotate the rings so that you minimize the blow by between the piston and cylinder wall.
