Posted 7/23/2014 20:16 (#3982782 - in reply to #3982689) Subject: RE: Thoughts on Keen-serts/Time-serts
The Keen-serts that I have installed have worked forever. They lock in with the little wedges. Heli-coil repairs on oil pan drains tend to wind out. This might be caused by the heli-coil being in the oil. I have no experience with Time-serts, but they do not have a mechanical lock to keep them from winding out.