Head bolt broken in block, recommendations please!
12-11-2010, 10:46 AM
#1
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Head bolt broken in block, recommendations please! So long story short, I must not have gotten all the coolant out of the bolt hole, hydrolocked the bolt and snapped it off right after where the threads start. I tried drilling it but the drill won't go dead center and I don't want to drill the threads. And because of the lag on the bolt it's about 1.5-2" down so it's not easily accessible. Keep in mind the block is still in the car.
I had a friend recommend some tool of GM's called a time cert? Don't think I got the name right. Anyways any ideas would help. Thanks
I had a friend recommend some tool of GM's called a time cert? Don't think I got the name right. Anyways any ideas would help. Thanks
12-11-2010, 10:56 AM
#2
Get the time cert tool then do your drilling with its guide plate, then install a time sert. Don't mess with it until you have some type of drill guide.
Last edited by O2Form; 12-11-2010 at 01:34 PM.
12-12-2010, 08:52 PM
#7
you need a quikcenter set. I swear its the greatest tool ever invented for broken bolts. Do yourself a huge favor and buy a set or two. How it works: http://www.youtube.com/watch?v=RbDF9...2D9F1&index=17
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12-14-2010, 10:44 PM
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Have you tried using an auto. center punch to start a dent in the bolt? If you don't have a guide that works well. I work on chryslers, breaking bolts is par for the course. You may not have access to one but we use a local welding company that has a mobile truck that does automotive stuff and can get bolts out of heads, blocks, exhaust, etc. even if its a head bolt recessed below the deck of the block a little. Even on an alum. block such as yours. He just taps the welder and builds slag I guess on top of the bolt till he gets it far enough out of the hole to tack a nut on it and uses a wrench and socket to unscrew it. Just my $.02 though.
12-17-2010, 06:36 PM
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Well got an extractor stuck trying to get the bolt out lol **** it now. I'm buying a DD this weekend and tearing the entire car apart. Engine is ready to be pulled and taken to a machine shop. Exhaust is off (if anyone want to buy a Borla lol) rearend is coming out and some other stuff. So I'm either going to spend the money to rebuild my LS1 or build the 408 LQ9 block I have sitting in the garage.
But thanks for all the ideas and help. I'll know what to do better if this ever happens again.
But thanks for all the ideas and help. I'll know what to do better if this ever happens again.
