What is this?

krbjr31

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Joined
Oct 26, 2017
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12
Location
Alabama
I was replacing the timing chain on my 87 Bronco and after I finally got the timing cover off after a bolt broke off, this was in the block where a bolt hole is. It was full of some type of hard gunk. I have tried to see if I can clean it out and thread a bolt in but I can’t seem to get a bolt started. Any help would be much appreciated.
 

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krbjr31

New member
Joined
Oct 26, 2017
Messages
12
Location
Alabama
I know this is a helicoil but the gunk in it is a mystery being that this is in a water jacket do you think it might me some type of sealant to stop water from leaking?
 

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