Diamond Piston ?

Discussion in '1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk-' started by billy408stroker, Sep 7, 2013.

  1. billy408stroker

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    What would cause this on these diamond pistons...My friend has only ran these a few weeks and he changed heads and saw this..What would cause this ? 3 or 4 pistons have this in the same area only...

    [​IMG]
     
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  2. HotFox

    HotFox Active Member

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    detonation...
    Ive seen some out of a tractor engine that looks like some one sand blasted the whole piston from running too lean.

    Scott
     
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  3. billy408stroker

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  4. Rick 91GT

    SN Certified Technician Site Sponsor

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    Correct that is from detonation...I'd just knock any rough edges off those dimples of any

    Sent from my XT907 using Tapatalk 2
     
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