Not Ranked
Rick--I did not state anything comparing helicoils to timeserts--I simply pointed out that they originally were standard in aircraft engines and that the install process was critical--
However to your last post I will comment/correct a couple of things---They are made of high quality stainless, they will not rust . also, the first thru the last thread all pull the same load--if heat cycles effect anything around a heli coil, it will be the heli coil that lasts longest--
However---If you have a severely damaged, stripped out hole, the timesert will probably be the best for the job as it will remove a larger amount of parent material and is usually used with a larger size tap , where as the helicoil uses a special tap made for the specific size used. A helicoil should never be used for a sloppily drilled hole--and this is what usually happens when someone has a broken bolt/stud--drilled off center,oversized,etc
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