Originally Posted by Beezer
timecerts are not "better", only different. helicoils have been used on aircraft engines for new installation as well as certified repair for at least 60-70 years. I have 36 years as an aircraft mechanic... never seen a properly installed helicoil fail. to install a timesert you have to drill a bigger hole in the parent metal
Well then they're certainly good enough for my lowly valve covers. Do they require locktite to keep from backing out? I sure don't want to deal with them every time I adjust my valves.