Hi Guys, I had to replace 3 broken manifold studs before I added the new tubo - so I took a few pics of the extraction process I used.
1. Use heat on all the remaining nuts to remove them - none of my nuts came off - the whole stud came out.
2. replace all studs and nuts if you can.
3. Use a reverse drill bit and extractor.
One of the broken studs came out while I was reverse drilling it, the other came out with the extractor.
I centre punched as best I could the broken stud, then drilled the broken stud right through with a small reverse cobalt bit. Then I used a bigger drill bit and drilled it out - then used the extractor.
The whole process was quite easy and only took about 1.5-2hrs including removing all the other manifold stuff.
1. Use heat on all the remaining nuts to remove them - none of my nuts came off - the whole stud came out.
2. replace all studs and nuts if you can.
3. Use a reverse drill bit and extractor.
One of the broken studs came out while I was reverse drilling it, the other came out with the extractor.
I centre punched as best I could the broken stud, then drilled the broken stud right through with a small reverse cobalt bit. Then I used a bigger drill bit and drilled it out - then used the extractor.
The whole process was quite easy and only took about 1.5-2hrs including removing all the other manifold stuff.