Welch Plug Hole Badly Corroded

[aussie54]

Hi All. I am in the process of replacing the head gasket and found that one of my welch plug holes is badly corroded. In fact, the welch plug appears to have merged with the hole. I cleaned off some of the corrosion but It shows me that there is no longer an actual round hole in the block. Has anyone had this problem and if so how was it fixed? I have atttached some pics...... Your help would be appreciated muchly.....cheers.

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[growler2058]

You need to knock the plug out to see what the inside surface is like. I'd be checking the rest while your at it too


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[aussie54]

There is no plug left to speak of. It is now a jaggered hole.