03-12-2020, 10:59 AM
For what it's worth another way is to drill & tap oversize, Loctite in a threaded plug (metal of your choice, but I would suggest aluminium) and start again with a fresh hole. A helicoil is undoubtedly easier; though the plug method may present the opportunity not to drill quite through into the sump (ref discussion on oil leaks).
Simon, I'm not sure I'd worry about a 'short' helicoil, certainly in this application. As long as it's soundly done it will be stronger than the original threads. My big end bolts screw into 1D helicoils.
Simon, I'm not sure I'd worry about a 'short' helicoil, certainly in this application. As long as it's soundly done it will be stronger than the original threads. My big end bolts screw into 1D helicoils.