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> I think it would be incredibly difficult to install a helicoil, or a > solid insert, in an assembled engine, let along while installed in > the car. There really is no room to get in there to do that work. > > It is more likely that your mechanic installed one of those quick and > dirty repair studs, which has what look like oversized wood screw > threads on one end. These can be easily installed in the car, are > cheap, and guaranteed to let you down at an inconvenient moment. Sorry, I forgot to mention that I had taken the engine out of the car prior to taking it to the mechanic. He took off #3+4 cylinders and inserted the helicoil. > I have avoided even mentioning them for fear that someone would think > that they amounted to anything more than a VERY temporary stopgap > solution. If you have one or more of these, you should be shopping > for a rebuild, and a real solution, right now! I agree, the stud that popped out was one of the said kind. I would've had inserts put in all of the studs, but no $, no time. > A helicoil, on the other hand is usually a very good repair. They > are seldom used for head stud repairs, however, because it is > difficult to keep oil from the case from leaking out through them. > The solid inserts don't have this problem. > > Jim > > - > ******************************* > Jim Adney, jadney@vwtype3.org > Madison, Wisconsin, USA > ******************************* >