Reply To: Repair stripped plug threads without removing head?

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July 2, 2023 at 3:56 pm #277617
Bob Wight
Participant

    US Member

    Some folks have done this repair without removing the head by using lots of grease on the drill bit and thread tap to catch all the chips, but that’s too sketchy to me.  I’m with Frank on this one – easy enough to pull the compression relief off, pull the cylinder head and do it right.   And use the thread repair kit made specifically for spark plug holes.

    Bob

    1937 Champion D2C Deluxe Lite Twin
    1954 Johnson CD-11
    1955 Johnson QD-16
    1957 Evinrude Fastwin 18
    1957 Evinrude 3022
    1958 Johnson QD-19
    1958 Johnson FD-12
    1959 Johnson QD-20
    1982 Evinrude 25hp

    “Every 20 minute job is only a broken bolt away from a 3-day project.”
    "Every time you remove a broken or seized bolt an angel gets his wings."