I have a Triumph Tiger 1970 that was fitted with an insert in the spark plug hole. I would like it removing and the hole welding up and redrilled and tapped for a standard spark plug Champion N3C. I am in Houston Texas. Does anyone know a good machine shop that can do this work ?
Cliff Holland at Gulf Coast BMW should be able to help if it can be done. I doubt they would do something like this in their shop, but if it's doable they would know a shop that can. Getting a weldment to match the surface texture of the cast head would be some trick, far more difficult than the drilling, welding and maching, but anything is possible these days with enough $$.