Hi Dave,
On the factory turbo installations that I have taken apart there has been a metal plate that goes between these nuts and the flange, on the plate there are some tabs that you bend up around the nuts once you have them torqued. The tabs are to stop the nuts coming off, did you have one of these installed? If not maybe you should find one for your turbo, if its a common sort of flange they shouldn't be too hard to find, or you could make your own pretty easily.
Bookmarks