Review on Heli-Coil 5334-14 Thread Repair Kit by Ryan Brunson

I used this great product on an aluminum headed lawnmower engine that had a cross threaded spark plug and I did it without removing the head so I did it like this. Lubricate the threads of the tap to help the metal shavings stick to it. Then take a piece of fabric and apply grease to it until completely saturated. Place the piston at the bottom of its stroke to clear the cock, then slide the greased rag through the spark plug hole. The grease on the rag makes the metal shavings stick to the greasy rag, but it doesn't pick them all up. After you pierce the hole, use needle nose pliers and pull out the spark plug. cloth, then use an air hose and blow out the remaining chips. This works best when using a liquid lubricant that is sprayed into the spark plug hole to loosen and dilute the lubricant in the piston. I used sea foam, do this until you are sure all metal shavings have been removed and please wear safety goggles as the metal shavings will fly out of the spark plug hole in the piston. You can also do this without grease or a piece of greasy cloth, you have to position the piston so that the exhaust valve is open and then blow the metal shavings out of the spark plug hole and some will go through the exhaust valve. works best if you put a vacuum hose in the muffler, remember these methods should only be done if the head is aluminum because if you don't remove all the aluminum shavings then it's not that critical as aluminum is soft Metal and shouldn't damage the innards as it would be if it were steel filings the witch would wreck the motor hope this helps!