Originally Posted by Technocyclist
Which do you think happen first? overheating or the head getting blown off? I suspect the head gets blown off first and causes the engine to overheat. If it overheat first before the head gets blown off, then try checking your oil mixture. Also, the engine may not yet completed the break-in.
Enjoy the fix...
Very good point, I made the mistaken assumption that the engine was broken in. And you're right, he may be running the engine lean, or geared wrongly, thus putting too much load on the engine. That would overheat it quickly also.