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Piston oversize stamping ?s

Discussion in 'The Garage' started by OLD DAWG, Oct 2, 2005.

  1. OLD DAWG

    OLD DAWG 1/2 ton status

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    It's been a long time since I've rebuilt an engine but in the past all oversized pistons were stamped with that oversize on top. Has anyone out there found exceptions to the old rule? :confused:
     
  2. gauder

    gauder Banned

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    Most of the pistons I've used in the past 10 years have it stamped right on the top of the piston, although a few of the higher dollar forged domes have it marked on the inside.
     
  3. POWERMAD

    POWERMAD 1/2 ton status

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    The KB pistons that I used did not have a stamp on them, .060 over BTW.
    Generaly if there is a stamp it was put there by the tech that assembled the engine.
     
  4. 4X4HIGH

    4X4HIGH 1 ton status Premium Member GMOTM Winner

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    That is not true, the pistons are marked from the manufacturer either on the top or inside the piston. Sometimes it slips and a single piston or maybe even a set doesn't get marked. I've been building engines professionally now for 19 years and have only seen a couple pistons that weren't marked and only a few that were stamped on the inside.
     
  5. POWERMAD

    POWERMAD 1/2 ton status

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    No stamp on the top of these pisons just a part # on the inside.
    I have seen quite a few pistons that had no stamps and were oversize.
     

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