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Reply to "Frozen head bolt / engine reconditioning"

We were able to get them out this evening. I started with the impact gun, hitting it with the vibrations, rocking the bolt back and forth with forward and reverse, tapping it with a hammer. That basically resulted in stripping the hex head pattern from the bolt. So I moved to plan B, cut the heads off the bolts and deal with them with the heads off the block. Once the heads were removed from the block we had access to the bolt threads and hosed them down with penetrating oil. After numerous applications of the penetrating oil and somewhat gentle tapping on the bolt they loosened up enough to remove them from the block. By hand. Literally removed the first one bare handed. Vise grips were used on the other but they are out. No trauma to the block or my wallet! Lol

Had this guy in the block in one of the coolant drains. Any ideas what it would be used for?

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