Trying to remove a pair of thermactor plugs out of the gt40 heads I bought. I can’t get hem out for the life of me.

I started by grinding a chisel to fit perfectly in the slots and using a wrench on it. No luck

Then Tried adding heat with a torch. Same outcome

Next I tried using Loctite on one of the power steering bracket bolts and letting it set up, and back it out. Nope

Then I went for the hardened extractor bit and heat again with no luck

I have watched videos of guys installing them with coins. What the heck is holding these in?


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