Who has used this on their bike? Good results? What size drill bit and which size coil did you use? I need to do this and just want some advice from others who have done this. Running the NGK B8ES plugs.
I personally would never use a Heli-Coil, it is truely an inferior product that will uncoil and leave the hole threadless.
I highly endorse Time-Sert thread repair kits.
They are very expensive but, they are the best I have used.
Although, I would be removing the head from the engine and be rebuilding it after doing the thread repair to the spark plug hole.
All you need is metal drillings down your cylinder bore to get trapped between the ring grooves and the rings.
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