Can you see anything now that you have the VC off? I'm not super duper familiar with the Zetec, but those look like they might be freeze plugs, or at least threaded plugs into cooling channels between cyl 1&2, and 3&4.
Let me know, maybe I can advise.
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Moderating everything now, let me know if I can help.
Originally Posted by the user formerly known as ZX3_Chick
You're special aren't you.