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excessive blow by, + head gasket

Discussion in 'Gen 3 Prius Care, Maintenance & Troubleshooting' started by freshedie92, Oct 26, 2018.

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  1. Mendel Leisk

    Mendel Leisk Senior Member

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    Still, I wonder about the piston revision. To follow the TSB to the letter you replace them also. And check the crankshaft with plastigauge.

    What might the piston revision be? Even if the rings are compatible, the new piston must be advantageous in some way.

    I appreciate the piston replacement is significantly more expensive, and more difficult. The TSB suggests a machine shop for separating the pistons, installing the new.

    And for all of this, 16.6 hours, IIRC...
     
    #21 Mendel Leisk, Oct 30, 2018
    Last edited: Oct 30, 2018
    freshedie92 likes this.
  2. danlatu

    danlatu Senior Member

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    If i had to do it again. I would buy a 4th gen motor and put it in. Same price as a 3rd gen with realllllly low miles. Like this one I found on eBay. 16000 miles(y)(y)(y)
    Screen Shot 2018-10-31 at 5.31.24 PM.png
     
    #22 danlatu, Oct 31, 2018
    scona, freshedie92 and mjoo like this.
  3. freshedie92

    freshedie92 Member

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    Too late now, I'm crank deep in this bad boy.
     
    #23 freshedie92, Oct 31, 2018
  4. freshedie92

    freshedie92 Member

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    I agree that there's some benefit. But not 200rs worth for me. I'm following danlatus steps, and hoping my first rebuild goes as well as his
     
    #24 freshedie92, Oct 31, 2018
    Raytheeagle and Mendel Leisk like this.
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