The threads aren"t what seals it"s the gasket and flat surface on the head where the spark plug seals on that 7/8" x 18 thread per inch plug. Same on a taper seat it seals on the seat. Helicoils work fine and there are many other brands of thread repair inserts out there too. Check for thread repair inserts with mcmaster.com fastenal.com motionindustries.com helicoil.com Call around and find a REAL machine shop that already has the thread repair kits. You need the proper size drill, special tap, thread insert tool and thread insert is why they aren"t cheap.
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Today's Featured Article - Box Plow Blues - by Tom Schwarz. One of the first implements most tractor owners obtain is the box plow. For very little money, this piece of equipment promises to plow and flatten any hill or vale on your ranch road or farm. At least that's what I thought! As simple as a box plow appears, it can be rather challenging to make work correctly. In our sandy soils of Florida, traction is king. You can never have wide enough tires or heavy enough weights to get all the traction you want … unless you own a monster tractor. U
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