Originally Posted by
Phill
I had exactly the same issue with my first Nova. Instead of trying to tap a new thread I simply replaced it with a large nut and bolt instead as there is access to fit the nut on behind the frame head. Not sure that drilling an oversize hole into what is effectively just a sleeve in order to fit a helicoil is the answer here - what if you burst through the walls of the sleeve by going oversize? My understanding is that helicoils work best in a solid casting such as a cylinder head, whereas the frame head is hollow