Re: Heli-Coil Usage

Posted by JWL On 2010/10/19 10:22:58

Some years back I had a '39 Cadillac 60 Special. I had to remove the heads to do a valve job. This engine uses bolts to fasten the cylinder heads to the engine block, and some, if not all screw into the water jacket. One of the bolt holes was damaged by rust. I used a Heli-Coil insert to repair the threads. As mentioned above, I also used a Permatex sealer on the threads of all the bolts going into water jackets to prevent leakage. Oh yes, I replaced all the bolts with new ones. Don't know if repairing for a bolt or a stud would be different, but this is my experience.

(o{I}o)