Hot Rod Forum : Hotrodders Bulletin Board - View Single Post - ARP Head Bolt Broke
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Old 05-07-2013, 07:25 PM
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Originally Posted by zardiw View Post
Had noticed that it was leaking...thought when I rebuilt it I had forgotten the sealer...this is #16 in the torque sequence on the passenger side.

Then I notice that it had apparently 'backed out' an inch...but it had actually broken.

How weird huh? I had used an ARP head bolt kit.

What could have caused this....defective bolt?......Insufficient torque...I remember pretty distinctly using a torque wrench when I rebuilt this engine a few years ago.

Needless to say the head gasket is probably blown....I drilled and easy outed it.....put a temporary bolt in there until I can get to replacing the head gasket

Heads are iron fwiw, Iron Eagle, or the Chevy version.......forget

The HG might still be OK. Check the plug adjacent to the bolt to see if it shows any sign of coolant. Check the oil for water and vice versa.

If that all checks out, get a replacement bolt and torque it down. Run the engine long enough to fully heat it up, cool it overnight and retorque it.
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