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Generation III Internal Engine 1997-2006 LS1 | LS6
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head bolt seized in block

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Old Sep 7, 2010 | 07:30 PM
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Default head bolt seized in block
If the extractor method doesn't work can it be drilled out at a machine shop and heli coiled? Anyone have experience with this?
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Old Sep 7, 2010 | 07:39 PM
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From: Little Rhody
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While the service manual shows it can be fixed with a heli-coil, you might want to check the kit made by Timesert. Timesert

Also, here is another thread on the subject: Link
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Old Sep 7, 2010 | 07:51 PM
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what you would most likely want is the timesert, or steel insert. ive been told by a machinist than these thread repairs are actually stronger than the original threads!, not sure if its true mabye somone will step in for some help
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Old Sep 7, 2010 | 09:04 PM
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Timesert looks like a great solution! Thanks for the advice!

Anyone want to comment on using the timesert? Since part of the bolt is still in the hole does anyone suggest anything for that?
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Old Sep 8, 2010 | 04:44 AM
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From: Little Rhody
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You need to remove it. Read the entire thread that I posted a link to. I had asked where the Timesert is installed within the block and it is installed low in the block where the original threads were located. This is necessary to obtain the proper stretch of the head bolt/stud. As a result, you will need to get the old one out of the block.
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Old Sep 12, 2010 | 09:25 PM
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I ended up drilling it out with a 3/8 bit by hand, it was risky to do so by hand but everything turned out ok. Insert is in and is nice and tight.
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Old Sep 12, 2010 | 09:38 PM
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btw the kent moore time sert kit 100 and 300 worked great!
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Old Sep 13, 2010 | 05:03 AM
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Great, didn't happen to shoot a few photos did you? It would certainly help others in the future.
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Old Sep 13, 2010 | 05:41 AM
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you should have went down to home depo and got some *****, that would have got it out pretty easy...
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Old Oct 27, 2010 | 02:12 AM
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From: Turnin' Wrenches Infractions: 005
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Originally Posted by gokussx4
btw the kent moore time sert kit 100 and 300 worked great!
I just bought one of these as well.
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Old Oct 27, 2010 | 05:54 AM
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Originally Posted by 01ssreda4
I just bought one of these as well.
Which bolt (OEM or ARP)...?

Which bolt (location on block)...?
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Old Oct 27, 2010 | 07:33 AM
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From: Turnin' Wrenches Infractions: 005
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No, the bolt didn't break. The bolt broke the threads.
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Old Nov 10, 2010 | 09:06 PM
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I tried to get some photos but they didn't really turn out since my problem was down in the block

I will say that if you do get one stuck down there and a screw extractor doesn't work, best bet is a 6" carbid drill bit from grainger. They are like 30 bucks but it allowed me to drill out the arp bolt successfully.

Doing it by hand is really risky but if you do it slow and use a thandle it should be fine.
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