Originally Posted by
galaxie641
Dorman and Timesert are the best, helicoil is the worst, if it is one of the front 4 a shop should do it for $300 or less, one of the back 4 could easily be double that.
Since I recommended Helicoil, I was just wondering why it is the worst. I work as a design engineer and we send tools on top of drill bits 20k ft into the ground at temperatures like 300 degrees and pressures to 25ksi. Of course the inserts are not open to the drilling fluids or anything, they are embedded in the tools.
Will a Helicoil allow the explosion to blow by? I can see how that might be a cause for concern.