I found on www.cannell.co.uk workshop manuals for various models of Porsche in free download (pdf), but nothing on the 3.3 and 3.6 Turbo Charged.
There are manuals for the Carrera 2 and 4 with a few common issues (transmission, heating system) and documentation on Jetronic.
Do you know where find to download the specials workshop manuals for 3.3 and 3.6 turbo ?

thank's by advance

Thierry
1991 - 3.3 T