Deck water hole plugged

Ed McLawhorn Jr. · 09-13-2021, 05:55 PM

Looking at deck of small bore bowtie block and noticed what appears to be silicone in small assuming water holes located just above dial pins at #1,2,7,and 8. I purchased block with most machine work completed. Holes are roughy 1/4" diameter. I ran motor earlier this year but had water in oil and thinking it was head gasket. I don't want to take any chances and eliminate all potential water leaks. Head gaskets and heads have same hole. Why would someone plug holes on block and what if any concerns about leaking?

09-13-2021, 05:55 PM	#1
Ed McLawhorn Jr. Member Join Date: Nov 2008 Posts: 306 Likes: 3 Liked 19 Times in 17 Posts	Deck water hole plugged Looking at deck of small bore bowtie block and noticed what appears to be silicone in small assuming water holes located just above dial pins at #1,2,7,and 8. I purchased block with most machine work completed. Holes are roughy 1/4" diameter. I ran motor earlier this year but had water in oil and thinking it was head gasket. I don't want to take any chances and eliminate all potential water leaks. Head gaskets and heads have same hole. Why would someone plug holes on block and what if any concerns about leaking?