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  1. 2

    Broken Plugs - Detonation?

    Scott, Thanks for the welcome. Unfortunately the short block was built by another party, the dealer did all the rest of the service work but only installed the new block. The challenge I am having is it sure looks like detonation/pre-ignition but that is not something that can ever be 100%...
  2. 2

    Broken Plugs - Detonation?

    I have a 2005 S model, 1ZZFE engine that was seized and replaced in July. The head was inspected and deemed undamaged and re-used with a new 1ZZFE block from an engine builder that was bored 0.020 oversized with 0.50mm pistons to fit the new cylinder diameter. At the time, the dealer performed a...
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