Time-Sert Spark Plug Thread Repair - Fixing Stripped Threads

In this video I am fixing stripped spark plug threads using a kit from Time Sert. This is a high quality repair that uses a unique insert that locks into the cylinder head from the top and bottom using a specific set of tools.

I have never used this kit but decided to try it based on the exact situation of this having a completely ruined set of threads with the potential of not being square to the original sealing surface. This kit has a specific seat cutting tool which provides a fresh new sealing surface for the spark plug crush washer which was very important to me. All in all it was not difficult and I am super happy with the end results.

Time-Sert website:
http://www.timesert.com/html/sparkplug.html

The kit I used in this demonstration is PN# 4412-321 which includes the inserts for an M14 threaded plug.

The Back-Tap I showed is another very handy option for thread repair. If the top few threads are stripped this tool aligns itself by the good lower threads and upon backing the tool out you are left with repaired threads up top.

Back-Tap link:
https://www.powerbuilt.com/products/powerbuilt-14-millimeter-back-tap-thread-repair-tool-640811

Hopefully you find this video helpful in providing some solid information on a potential repair you can do. Although the kit used is expensive it is far less so than a replacement head or towing bill due to a lesser repair failing when on the road.

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