Ferrari 308 QV or 328 Cam Pulley Lock Tool

thingiverse

Wedge cam pulley locks for use when changing timing belts on a Ferrari 308 quattrovalvole or 328 engine. (Will not work on a 308 2 valve engine because the pulley spacing is wider than on the 4V). Design is for one lock - print each of upper and lower components twice to have a set for each cylinder bank. Designed for a household 1/4" x 3" bolt, because that's what I had laying around! Use a washer under each nut/bolt to keep them from pulling into the block. A single 11mm (or 1/4") wrench is needed to tighten. I printed in Polypropylene, the surface give of the semi-flexible material allows the blocks to grip the pulley surface when tightened.. Infill was 20%, but I added one layer to the top and bottom thickness. Using polypropylene, a raft on a heated bed is needed to adhere to the print bed and keep it from shifting mid-print.