1980 Triumph TR7

Dear Doctor: I’d like your expert opinion on my 1980 Triumph TR7. Some mechanics are recommending a heli-coil repair for a stripped spark plug socket. Another with direct experience claims the heli-coil will just blow right out and that I must replace the head. What are my options? Jim

Dear Jim: We install heli-coil inserts on a regular basis for problem cylinder heads and have never had a problem. The company called Heli-coil (www.helicoil.in) sells the correct kit for many applications. You can also check with the local parts store for the correct heli-coil for your Triumph TR7. When the heli-coil is installed properly it will not pop out, but you must follow the directions.

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