Just ordered my cables from California Push-Pull for my Lycoming IO-540. Trying to figure out what passthroughs are going to work for them. Early on in the build I enlarged the three holes in the recess to 5/8 as per plans. Now I have 3 holes in a row that can't be enlarged to accept the Eyeballs from Spruce. At least not 3 in a row. The Cable-Safe passthroughs will fit but they call for a 9/16 hole to be made in the firewall. Already have 5/8 inch holes. The other option I considered was sandwiching the existing 3 holes between 2 pieces of stainless steel using rivets and fire sealant. Drill 3 new holes with better spacing and the size I actually need. Or......seal the center hole and drill an extra hole below the other two in a triangle configuration. Then I could use the eyeballs. Somehow the plastic snap bushing for these passthroughs seems a little inadequate. One of these days before I finish the build something is going to turn out easy! LOL
Thanks
Thanks