Hey guys. I recently discovered when taking off my turbo manifold to replace with a tubular one, that three of the manifold stud holes were stuffed. I got a mate of mine who's done it plenty of times, to come out and helicoil them. One was great but the other two are off-axis, which of course isn't ideal. I could remove the helicoil but the hole itself was drilled off-axis.
So what happens now. I could get a professional to come out and maybe turn them in to M10 stud holes but i wanted to know if this would foul into any water jackets.
I read somewhere they used Locktite on a stud to secure it in, cut off the end flat, then just used that as a solid base for a new hole drilled correctly. Other have filled it up with aluminium weld etc.
There is a guy local to me who's renown locally for being able to fix any thread anywhere, my main concern was if he's forced to go up to M10 if that would foul anything else inside the head. I'm going to be getting him to come out anyway to helicoil the turbo oil feed line bolt hole from the top corner of the head as overtightening the banjo bolt has stripped out the thread from the softer aluminium.
Ideas? Thoughts? Advice?