Timing Belt Tensioner Tool Really Needed? - Pelican Parts 2008 Mini Cooper // '83 Porsche 944 // '01 Mazda Protege [sold] // "Never break more than you fix!" - SoCal Driver I have been unsuccessful in finding any other car that requires such a precise tool for setting timing belt tension. Anyone know of any? _____ Bob S. former owner of a 1984 silver 944 10-28-2005, 09:48 AM Porsche 928 Cam-belt Tensioning Tool - JDS Porsche Porsche 928 Cam-belt Tensioning Tool The Jf 928 cambelt tension tool is suitable for all 16v and 32v Porsche 928 cars. It is similar to the factory "Special Tool 9131" as shown on Page 15-17 of the Workshop manual.