Reply To: Can I apply heat to head bolt? Johnson RDE-17 1955 25 hp

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November 21, 2018 at 5:00 pm #154474
bob-d
Participant

    Just saw a test of penetrants on YouTube, and Deep Creep by Seafoam came in first, and actually penetrated rusty bolts. Bought a can to give it a try.
    I also agree with Frank and heat the hell out of the surrounding surface first. I use the yellow can mapp gas which works for me. Just did a 55 15 HP Evinrude and didn’t snap 1 head bolt!
    Bob D