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Thread: Pitting in head from detonation

  1. #1
    Junior SCH Member
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    Pitting in head from detonation

    Long story short, bought car w/ potential blown headgasket. Here's my other thread: http://www.superchargerhelp.com/showthread.php?t=10421
    Noticed heads have some pitting around combustion chamber of #8 from what looks to me like detonation. Anyone experience this?
    1987 Iroc-Z, ZZ4, xr276 w/ 1.6's, TPIS Miniram, 42#'s, Intercooled Paxton SN2000, T-56, 3.73's, Full Hotchkis/Koni suspension, C5 brakes, 17" ROH's

    1970 Skylark Convertible resto-mod, project on hold

  2. #2
    Senior SCH Member vinces427bb's Avatar
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    some pitting?
    is it very bad?
    what does it look like?

  3. #3
    Junior SCH Member
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    Sorry, was at work & forgot to upload the photos.

    It's not good, but fortunately the rest of the heads are in great shape.
    Attached Images Attached Images
    1987 Iroc-Z, ZZ4, xr276 w/ 1.6's, TPIS Miniram, 42#'s, Intercooled Paxton SN2000, T-56, 3.73's, Full Hotchkis/Koni suspension, C5 brakes, 17" ROH's

    1970 Skylark Convertible resto-mod, project on hold

  4. #4
    Senior SCH Member vinces427bb's Avatar
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    i would check into a resurfacing on both heads :straight:

    that doesn't look like it will buff out too well

  5. #5
    Junior SCH Member
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    No it doesn't, going to have to get them welded & resurfaced...
    1987 Iroc-Z, ZZ4, xr276 w/ 1.6's, TPIS Miniram, 42#'s, Intercooled Paxton SN2000, T-56, 3.73's, Full Hotchkis/Koni suspension, C5 brakes, 17" ROH's

    1970 Skylark Convertible resto-mod, project on hold

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