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I made my own with the clean half of a removed stud. Use the bad half to clamp it down and drill a straight hole through it, then cut off the bad section where you had it clamped. For studs in the head where you can get grab a couple threads just tread it in above the broken stud, for exposed threads (yes I had several that even though I had some grip room still had to be completely drilled out) I threaded the it into a nut then threaded the nut onto the exposed thread.
As projectSHO89 says though, none of that helps if you are flush. Flush is the worst. I extracted all 20 of mine after cutting the nuts off to remove the manifolds.
15 - I got with a titan stud extractor
1 - broken off three threads into the head - got a starter hole drilled on this one using the tool I made above and got it with an easy out.
4 - had about 5 threads exposed but every attempt at removal failed and I finally had to drill them all the way out starting at 1/8" and ending at 1/4" - starting straight is "critically important".
Give this a read and note the mistakes I made, there are plenty other threads on here that are good reads as well.
Well I had 2 studs come out with nut on drivers side. 3 were removed via welding a washer and nut onto exposed broken studs. 2 were removed using a stud extractor. And the last 3 removed using http://m.ebay.com/itm/161693918449?nav=SEARCH. Drill guide and bushing.
The drill guide worked so good I will probably not even do the welding nut method on passenger side. I would however recommend some cobalt left hand drill bits, as they removed material MUCH better than the bit supplied with kit. McMaster carr part # 3474A15.
just take them out with a nut and a mig welder. works great/cheap.
Tried that and only worked on 3 studs. Studs broke again after welding washer and nut on them.
Just a point of intrest, there were 4 holes that would not accept new studs without running a tap thru them. New studs got so tight I was afraid of breaking them while installing.
It is my belief that when the head was mass produced the tolerances on those hole/taps was off. Some holes I could install a stud with my fingers, others needed tapped.
And no I did not damage any threads, to cause this.
Yes, I used the titan extractor. On passenger side only 1 stud came out with nut. 9 were either broke or had to be cut to get manifold off.
The titan put a smile on my face 5 times on the passenger side. Would have been 6 but it broke one stud almost flush with head.
Drill guide and bushing did the rest perfectly.
Just a note that using a 6.7mm drill bit to drill about 1/8" into stud/hole to recess stuck stud seemed to help alot. Most corrosion is there and this technique removes that and makes extraction much easier.
11-24-2014, 11:15 AM
