Diamond Piston ?

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

  1. 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...

    DSCF3035_zpsc7f741aa.jpg
     
  2. 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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  4. Correct that is from detonation...I'd just knock any rough edges off those dimples of any

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