Rb25 broken exhaust manifold bolt help?

[Busted_daily]

I have 2 broken studs in the head which are the exhaust manifold bolts I started out drilling with a small bit then useing a EXTRACTION bit to remove the stud properly and the stud is just being pushed further back what can I do so I don't go to FAR and damage the head ? Please and thank you

[dbeiler]

Always use reverse drill bits to remove broken studs. Using conventional drill bits will spin the stud tighter into the head.

[eklips3]

for this job i hate using the typical easy out bolt extractor. Too often they brake while youre trying to drill it out and you dig yourself in a deeper hole.

try to find a extractor set like these;
http://www.pirate4x4.com/forum/attachments/general-4x4-discussion/370053d1210773239-best-type-screw-extractor-easy-out-extractor-set-ii.jpg

these ones you drill a pilot hole and you pound in extrators with a hammer and they bite into the broken stud and then you can carefully turn it out with a socket.

[S14kouki805]

Get it to a muffler shop and have them weld a nut on the end and then back it out. Extractors are a bitch and you'll need cobalt bits to drill the pilot hole.

[rawgarage]

learn something new everyday

[Busted_daily]

You were right the extractor bit broke off into the stud but I got 1 out of 2 studs closer and to the edge and not in the back anymore now just have to remove the broken piece and try again with maybe these




for this job i hate using the typical easy out bolt extractor. Too often they brake while youre trying to drill it out and you dig yourself in a deeper hole.

try to find a extractor set like these;
http://www.pirate4x4.com/forum/attachments/general-4x4-discussion/370053d1210773239-best-type-screw-extractor-easy-out-extractor-set-ii.jpg

these ones you drill a pilot hole and you pound in extrators with a hammer and they bite into the broken stud and then you can carefully turn it out with a socket.