Originally Posted By BDW
Lot of great info, I've never used a helicoil, but have always wondered why they don't back out with the bolt they're intended to hold when that bolt is removed?


Because when unscrewed they want to expand, which forces them even tighter into the hole.

Take care,
Rick
68 Coronet R/T 440 & 68 Charger 528 Hemi,and 5 Challengers! 6 cyl, 318, 360, 383, 451